ZAP Scanning Report

Inyección SQL puede ser posible.

No confíe en los valores de entrada del lado del cliente, incluso si en el lado del cliente se realice una validación.

En general, comprobar todos los datos de entrado en el servidor.

Si la aplicación usa JDBC, usar PreparedStatement o CallableStatement, con parámetros pasados por '?'

Si la aplicación utiliza ASP, usar ADO Command Objects con una fuerte comprobación de tipos de consultas y parámetros.

Si la Base de Datos puede usar Stored Procedures (Procedimientos Almacenados), úselos.

¡NO concatenar cadenas en los query (consultas) en el procedimientos almacenados, o utilizar 'exec', 'exec immediate', o su funcionalidad equivalente!

No crear consultas SQL dinámicas usando una sencilla concatenación de cadenas.

Aplique aun lista blanca (whitelist) de caracteres permitidos, o una lista negra (blacklist) de caracteres no permitidos en la entrada (input) del usuario.

Aplique el privilegio mínimo posible al usuario de la base de datos de los privilegios usados.

En particular evitar el uso de los usuario de base de datos 'sa' o 'db-owner'. Esto no elimina la inyección SQL, pero minimiza su impacto.

Conceder el mínimo acceso de base de datos que es necesario para la aplicación.

Los resultados de la página se manipularon con éxito utilizando las condiciones booleanas [-15.65477566515968 AND 1=1 -- ] y [-15.65477566515968 OR 1=1 -- ]

El valor de parámetro que está modificado fue NOT eliminado de la salida HTML para fines de la comparación

Los datos NO fueron revueltos por el parámetro original.

La vulnerabilidad fue detectada con éxito recuperando mas datos retornados originalmente, por la manipulación del parámetro

https://www.owasp.org/index.php/Top_10_2010-a1 https://www.owasp.org/index.php/SQL_Injection_Prevention_Cheat_Sheet

Los errores de Buffer Overflow se caracterizan por la sobrescritura de espacios de memoria del proceso web en segundo plano, que no deberían haber sido modificados, intencionadamente o no. Sobrescribir los valores de IP (Instruction Pointer), BP (Base Pointer) y otros registros causan excepciones, violaciones del segmento y otros errores. Normalmente estos errores terminan la ejecución de la aplicación de manera inseperada.

Reescribir el programa en segundo plano realizando una correcta comprobación de la longitud de retorno. Esto requerirá el recompilado del ejecutable en segundo plano.

Potencial desbordamiento de buffer. El script ha cerrado la conexión y ha lanzado un error interno del servidor 500

https://www.owasp.org/index.php/Buffer_overflow_attack

Un error de formato de cadena ocurre cuando los datos de una cadena de entrada es evaluada como un comando por la aplicación.

Reescribir el programa en segundo plano usando un borrado apropiado de las cadenas de caracteres erróneas. Esto requerirá el recompilado del ejecutable en segundo plano.

Potencial error de formato de cadena. El script cerró la conexión en /%s

https://www.owasp.org/index.php/Format_string_attack

El encabezado X-Frame_options no está incluido en la respuesta HTTP para proteger ante ataques 'ClickJacking'.

Los navegadores de web mas modernos apoyan la cabecera HTTP X-Frame-Options. Asegúrese que está establecido en todas las páginas web devuelta por su sitio (si usted espera que la página este enmarcada solo por páginas en su servidor (por ejemplo, es parte de un FRAMESET) entonces usted querrá usar SAMEORIGIN, de otras forma si usted nunca espera que la página esté enmarcada, debería usar DENY. ALLOW-FROM permite a sitios web específicos enmarcar la página web en navegadores web compatibles).

http://blogs.msdn.com/b/ieinternals/archive/2010/03/30/combating-clickjacking-with-x-frame-options.aspx

X-Frame-Options header is not included in the HTTP response to protect against 'ClickJacking' attacks.

Most modern Web browsers support the X-Frame-Options HTTP header. Ensure it's set on all web pages returned by your site (if you expect the page to be framed only by pages on your server (e.g. it's part of a FRAMESET) then you'll want to use SAMEORIGIN, otherwise if you never expect the page to be framed, you should use DENY. ALLOW-FROM allows specific websites to frame the web page in supported web browsers).

http://blogs.msdn.com/b/ieinternals/archive/2010/03/30/combating-clickjacking-with-x-frame-options.aspx

Web browser data loading may be possible, due to a Cross Origin Resource Sharing (CORS) misconfiguration on the web server

Ensure that sensitive data is not available in an unauthenticated manner (using IP address white-listing, for instance).

Configure the "Access-Control-Allow-Origin" HTTP header to a more restrictive set of domains, or remove all CORS headers entirely, to allow the web browser to enforce the Same Origin Policy (SOP) in a more restrictive manner.

The CORS misconfiguration on the web server permits cross-domain read requests from arbitrary third party domains, using unauthenticated APIs on this domain. Web browser implementations do not permit arbitrary third parties to read the response from authenticated APIs, however. This reduces the risk somewhat. This misconfiguration could be used by an attacker to access data that is available in an unauthenticated manner, but which uses some other form of security, such as IP address white-listing.

http://www.hpenterprisesecurity.com/vulncat/en/vulncat/vb/html5_overly_permissive_cors_policy.html

Web browser data loading may be possible, due to a Cross Origin Resource Sharing (CORS) misconfiguration on the web server

Ensure that sensitive data is not available in an unauthenticated manner (using IP address white-listing, for instance).

Configure the "Access-Control-Allow-Origin" HTTP header to a more restrictive set of domains, or remove all CORS headers entirely, to allow the web browser to enforce the Same Origin Policy (SOP) in a more restrictive manner.

The CORS misconfiguration on the web server permits cross-domain read requests from arbitrary third party domains, using unauthenticated APIs on this domain. Web browser implementations do not permit arbitrary third parties to read the response from authenticated APIs, however. This reduces the risk somewhat. This misconfiguration could be used by an attacker to access data that is available in an unauthenticated manner, but which uses some other form of security, such as IP address white-listing.

http://www.hpenterprisesecurity.com/vulncat/en/vulncat/vb/html5_overly_permissive_cors_policy.html

El encabezado Anti-MIME-Sniffing X-Content-Type-Options no estaba configurado para 'nosniff'. Esto permite versiones antiguas de Internet Explores y Chrome ejecutar MIME-sniffing en el cuerpo de la respuesta, causando potencialmente que el cuerpo de respuesta sea interpretado y desarrollado como un tipo de contenido diferente que el tipo de contenido declarado. Estos (principios de 2014) y versiones antiguas de Firefox preferiblemente usarán el tipo de contenido declarado (si hay uno establecido), antes que ejecutar el MIME-Sniffing.

Asegúrese que el servidor de la aplicación/web establezca el encabezado Content-Type apropiadamente, y que esté establecido el encabezado X-Content-Type-Options en 'nosniff' para todas las páginas web.

Si es posible, asegúrese que el último usuario usa un navegador web complatible con los estándares y moderno que no ejecute MIME-sniffing en absoluto, o que pueda ser dirigida por el servidor de la aplicación/web para no ejecutar MIME-sniffing.

Este inconveniente aún aplica para páginas de error (401, 403, 500, etc) ya que esas páginas a menudo todavía están afectadas por problemas de inyección, en cuyos casos aún hay preocupación de buscadores rastreando páginas fuera de su tipo de contenido verídico. En límite 'alto' este escáner no alertará sobre las respuestas de error al cliente o servidor.

http://msdn.Microsoft.com/en-us/library/Ie/gg622941%28v=vs.85%29.aspx https://www.owasp.org/index.php/List_of_useful_HTTP_headers

The Anti-MIME-Sniffing header X-Content-Type-Options was not set to 'nosniff'. This allows older versions of Internet Explorer and Chrome to perform MIME-sniffing on the response body, potentially causing the response body to be interpreted and displayed as a content type other than the declared content type. Current (early 2014) and legacy versions of Firefox will use the declared content type (if one is set), rather than performing MIME-sniffing.

Ensure that the application/web server sets the Content-Type header appropriately, and that it sets the X-Content-Type-Options header to 'nosniff' for all web pages.

If possible, ensure that the end user uses a standards-compliant and modern web browser that does not perform MIME-sniffing at all, or that can be directed by the web application/web server to not perform MIME-sniffing.

This issue still applies to error type pages (401, 403, 500, etc.) as those pages are often still affected by injection issues, in which case there is still concern for browsers sniffing pages away from their actual content type.

At "High" threshold this scanner will not alert on client or server error responses.

http://msdn.microsoft.com/en-us/library/ie/gg622941%28v=vs.85%29.aspx

https://www.owasp.org/index.php/List_of_useful_HTTP_headers

La protección del buscador de web XSS no está disponible, o está deshabilitada por la configuración de la cabecera de respuesta de HTTP 'X-XSS-Protection' en el servidor de web

Asegúrese que el filtro XSS del navegador web está habilitado, estableciendo el encabezado de respuesta HTTP X-XSS-Protection en '1'.

El encabezado de respuesta HTTP X-XSS-Protection le permite al servidor web habilitar o deshabilitar el mecanismo de protección del navegador web XSS. Los siguientes valores intentan habilitarlo:

X-XSS-Protection: 1; mode=bloqueo

X-XSS-Protection:1; reporte=http://www.example.com/xss

Los siguiente valores lo deshabilitarían:

X-XSS-Protection: 0

El encabezado de respuesta HTTP X-XSS-Protection es actualmente compatible en Internet Explorer, Chrome y Safari (WebKit). Tenga en cuenta que esta alerta solo se produce si el cuerpo de respuesta podría pontecialmente contener una carga útil XSS (con un tipo de contenido basado en texto, con una longitud distinta de cero).

https://www.OWASP.org/index.php/XSS _ (Cross_Site_Scripting) _Prevention_Cheat_Sheet https://blog.veracode.com/2014/03/guidelines-for-setting-security-headers/

Web Browser XSS Protection is not enabled, or is disabled by the configuration of the 'X-XSS-Protection' HTTP response header on the web server

Ensure that the web browser's XSS filter is enabled, by setting the X-XSS-Protection HTTP response header to '1'.

The X-XSS-Protection HTTP response header allows the web server to enable or disable the web browser's XSS protection mechanism. The following values would attempt to enable it:

X-XSS-Protection: 1; mode=block

X-XSS-Protection: 1; report=http://www.example.com/xss

The following values would disable it:

X-XSS-Protection: 0

The X-XSS-Protection HTTP response header is currently supported on Internet Explorer, Chrome and Safari (WebKit).

Note that this alert is only raised if the response body could potentially contain an XSS payload (with a text-based content type, with a non-zero length).

https://www.owasp.org/index.php/XSS_(Cross_Site_Scripting)_Prevention_Cheat_Sheet

https://www.veracode.com/blog/2014/03/guidelines-for-setting-security-headers/

El cache-control y encabezado HTTP Pragma no han sido establecidos apropiadamente o faltan, permitiendo al navegador y servidores proxy almacenar contenido.

Siempre que sea posible asegurarse que el encabezado HTTP cache-control está establecido con no-cache, no-store, must-revalidate, y que el encabezado HTTP pragma esté establecido con no-cache.

https://www.owasp.org/index.php/Session_Management_Cheat_Sheet#Web_Content_Caching

El encabezado Anti-MIME-Sniffing X-Content-Type-Options no estaba configurado para 'nosniff'. Esto permite versiones antiguas de Internet Explores y Chrome ejecutar MIME-sniffing en el cuerpo de la respuesta, causando potencialmente que el cuerpo de respuesta sea interpretado y desarrollado como un tipo de contenido diferente que el tipo de contenido declarado. Estos (principios de 2014) y versiones antiguas de Firefox preferiblemente usarán el tipo de contenido declarado (si hay uno establecido), antes que ejecutar el MIME-Sniffing.

Asegúrese que el servidor de la aplicación/web establezca el encabezado Content-Type apropiadamente, y que esté establecido el encabezado X-Content-Type-Options en 'nosniff' para todas las páginas web.

Si es posible, asegúrese que el último usuario usa un navegador web complatible con los estándares y moderno que no ejecute MIME-sniffing en absoluto, o que pueda ser dirigida por el servidor de la aplicación/web para no ejecutar MIME-sniffing.

Este inconveniente aún aplica para páginas de error (401, 403, 500, etc) ya que esas páginas a menudo todavía están afectadas por problemas de inyección, en cuyos casos aún hay preocupación de buscadores rastreando páginas fuera de su tipo de contenido verídico. En límite 'alto' este escáner no alertará sobre las respuestas de error al cliente o servidor.

http://msdn.Microsoft.com/en-us/library/Ie/gg622941%28v=vs.85%29.aspx https://www.owasp.org/index.php/List_of_useful_HTTP_headers

Web Browser XSS Protection is not enabled, or is disabled by the configuration of the 'X-XSS-Protection' HTTP response header on the web server

Ensure that the web browser's XSS filter is enabled, by setting the X-XSS-Protection HTTP response header to '1'.

The X-XSS-Protection HTTP response header allows the web server to enable or disable the web browser's XSS protection mechanism. The following values would attempt to enable it:

X-XSS-Protection: 1; mode=block

X-XSS-Protection: 1; report=http://www.example.com/xss

The following values would disable it:

X-XSS-Protection: 0

The X-XSS-Protection HTTP response header is currently supported on Internet Explorer, Chrome and Safari (WebKit).

Note that this alert is only raised if the response body could potentially contain an XSS payload (with a text-based content type, with a non-zero length).

https://www.owasp.org/index.php/XSS_(Cross_Site_Scripting)_Prevention_Cheat_Sheet

https://www.veracode.com/blog/2014/03/guidelines-for-setting-security-headers/

The cache-control and pragma HTTP header have not been set properly or are missing allowing the browser and proxies to cache content.

Whenever possible ensure the cache-control HTTP header is set with no-cache, no-store, must-revalidate; and that the pragma HTTP header is set with no-cache.

https://www.owasp.org/index.php/Session_Management_Cheat_Sheet#Web_Content_Caching

The Anti-MIME-Sniffing header X-Content-Type-Options was not set to 'nosniff'. This allows older versions of Internet Explorer and Chrome to perform MIME-sniffing on the response body, potentially causing the response body to be interpreted and displayed as a content type other than the declared content type. Current (early 2014) and legacy versions of Firefox will use the declared content type (if one is set), rather than performing MIME-sniffing.

Ensure that the application/web server sets the Content-Type header appropriately, and that it sets the X-Content-Type-Options header to 'nosniff' for all web pages.

If possible, ensure that the end user uses a standards-compliant and modern web browser that does not perform MIME-sniffing at all, or that can be directed by the web application/web server to not perform MIME-sniffing.

This issue still applies to error type pages (401, 403, 500, etc.) as those pages are often still affected by injection issues, in which case there is still concern for browsers sniffing pages away from their actual content type.

At "High" threshold this scanner will not alert on client or server error responses.

http://msdn.microsoft.com/en-us/library/ie/gg622941%28v=vs.85%29.aspx

https://www.owasp.org/index.php/List_of_useful_HTTP_headers

La protección del buscador de web XSS no está disponible, o está deshabilitada por la configuración de la cabecera de respuesta de HTTP 'X-XSS-Protection' en el servidor de web

Asegúrese que el filtro XSS del navegador web está habilitado, estableciendo el encabezado de respuesta HTTP X-XSS-Protection en '1'.

El encabezado de respuesta HTTP X-XSS-Protection le permite al servidor web habilitar o deshabilitar el mecanismo de protección del navegador web XSS. Los siguientes valores intentan habilitarlo:

X-XSS-Protection: 1; mode=bloqueo

X-XSS-Protection:1; reporte=http://www.example.com/xss

Los siguiente valores lo deshabilitarían:

X-XSS-Protection: 0

El encabezado de respuesta HTTP X-XSS-Protection es actualmente compatible en Internet Explorer, Chrome y Safari (WebKit). Tenga en cuenta que esta alerta solo se produce si el cuerpo de respuesta podría pontecialmente contener una carga útil XSS (con un tipo de contenido basado en texto, con una longitud distinta de cero).

https://www.OWASP.org/index.php/XSS _ (Cross_Site_Scripting) _Prevention_Cheat_Sheet https://blog.veracode.com/2014/03/guidelines-for-setting-security-headers/

El encabezado Content-Type se encuentra faltante o vacío.

Asegúrese que cada página establece el correcto y específico valor content-type para que el contenido sea impartido.

http://msdn.microsoft.com/en-us/library/ie/gg622941%28v=vs.85%29.aspx

A private IP (such as 10.x.x.x, 172.x.x.x, 192.168.x.x) or an Amazon EC2 private hostname (for example, ip-10-0-56-78) has been found in the HTTP response body. This information might be helpful for further attacks targeting internal systems.

Remove the private IP address from the HTTP response body. For comments, use JSP/ASP/PHP comment instead of HTML/JavaScript comment which can be seen by client browsers.

192.168.10.70

192.168.70.101

192.168.70.1

https://tools.ietf.org/html/rfc1918

Esta página contiene un mensaje de error/advertencia que podría revelar información sensible como la ubicación del archivo que produjo la excepción no controlada. Esta información puede ser usada para lanzas futuros ataques contra la aplicación web. La alerta podría ser una falso positivo si el mensaje de error es encontrado dentro de una página de documentación.

Revisar el código de fuente de esta página. Implementación de páginas de error personalizadas. Considerar implementar un mecanismos para proveer una única referencia/identificación de error para el cliente (navegador) mientras insertando los detalles en el sitio del navegador y no exponiéndolos al usuario.

This page contains an error/warning message that may disclose sensitive information like the location of the file that produced the unhandled exception. This information can be used to launch further attacks against the web application. The alert could be a false positive if the error message is found inside a documentation page.

Review the source code of this page. Implement custom error pages. Consider implementing a mechanism to provide a unique error reference/identifier to the client (browser) while logging the details on the server side and not exposing them to the user.

The Content-Type header was either missing or empty.

Ensure each page is setting the specific and appropriate content-type value for the content being delivered.

http://msdn.microsoft.com/en-us/library/ie/gg622941%28v=vs.85%29.aspx

El encabezado Anti-MIME-Sniffing X-Content-Type-Options no estaba configurado para 'nosniff'. Esto permite versiones antiguas de Internet Explores y Chrome ejecutar MIME-sniffing en el cuerpo de la respuesta, causando potencialmente que el cuerpo de respuesta sea interpretado y desarrollado como un tipo de contenido diferente que el tipo de contenido declarado. Estos (principios de 2014) y versiones antiguas de Firefox preferiblemente usarán el tipo de contenido declarado (si hay uno establecido), antes que ejecutar el MIME-Sniffing.

Asegúrese que el servidor de la aplicación/web establezca el encabezado Content-Type apropiadamente, y que esté establecido el encabezado X-Content-Type-Options en 'nosniff' para todas las páginas web.

Si es posible, asegúrese que el último usuario usa un navegador web complatible con los estándares y moderno que no ejecute MIME-sniffing en absoluto, o que pueda ser dirigida por el servidor de la aplicación/web para no ejecutar MIME-sniffing.

Este inconveniente aún aplica para páginas de error (401, 403, 500, etc) ya que esas páginas a menudo todavía están afectadas por problemas de inyección, en cuyos casos aún hay preocupación de buscadores rastreando páginas fuera de su tipo de contenido verídico. En límite 'alto' este escáner no alertará sobre las respuestas de error al cliente o servidor.

http://msdn.Microsoft.com/en-us/library/Ie/gg622941%28v=vs.85%29.aspx https://www.owasp.org/index.php/List_of_useful_HTTP_headers

The Anti-MIME-Sniffing header X-Content-Type-Options was not set to 'nosniff'. This allows older versions of Internet Explorer and Chrome to perform MIME-sniffing on the response body, potentially causing the response body to be interpreted and displayed as a content type other than the declared content type. Current (early 2014) and legacy versions of Firefox will use the declared content type (if one is set), rather than performing MIME-sniffing.

Ensure that the application/web server sets the Content-Type header appropriately, and that it sets the X-Content-Type-Options header to 'nosniff' for all web pages.

If possible, ensure that the end user uses a standards-compliant and modern web browser that does not perform MIME-sniffing at all, or that can be directed by the web application/web server to not perform MIME-sniffing.

This issue still applies to error type pages (401, 403, 500, etc.) as those pages are often still affected by injection issues, in which case there is still concern for browsers sniffing pages away from their actual content type.

At "High" threshold this scanner will not alert on client or server error responses.

http://msdn.microsoft.com/en-us/library/ie/gg622941%28v=vs.85%29.aspx

https://www.owasp.org/index.php/List_of_useful_HTTP_headers

The cache-control and pragma HTTP header have not been set properly or are missing allowing the browser and proxies to cache content.

Whenever possible ensure the cache-control HTTP header is set with no-cache, no-store, must-revalidate; and that the pragma HTTP header is set with no-cache.

https://www.owasp.org/index.php/Session_Management_Cheat_Sheet#Web_Content_Caching

El cache-control y encabezado HTTP Pragma no han sido establecidos apropiadamente o faltan, permitiendo al navegador y servidores proxy almacenar contenido.

Siempre que sea posible asegurarse que el encabezado HTTP cache-control está establecido con no-cache, no-store, must-revalidate, y que el encabezado HTTP pragma esté establecido con no-cache.

https://www.owasp.org/index.php/Session_Management_Cheat_Sheet#Web_Content_Caching

The Anti-MIME-Sniffing header X-Content-Type-Options was not set to 'nosniff'. This allows older versions of Internet Explorer and Chrome to perform MIME-sniffing on the response body, potentially causing the response body to be interpreted and displayed as a content type other than the declared content type. Current (early 2014) and legacy versions of Firefox will use the declared content type (if one is set), rather than performing MIME-sniffing.

Ensure that the application/web server sets the Content-Type header appropriately, and that it sets the X-Content-Type-Options header to 'nosniff' for all web pages.

If possible, ensure that the end user uses a standards-compliant and modern web browser that does not perform MIME-sniffing at all, or that can be directed by the web application/web server to not perform MIME-sniffing.

This issue still applies to error type pages (401, 403, 500, etc.) as those pages are often still affected by injection issues, in which case there is still concern for browsers sniffing pages away from their actual content type.

At "High" threshold this scanner will not alert on client or server error responses.

http://msdn.microsoft.com/en-us/library/ie/gg622941%28v=vs.85%29.aspx

https://www.owasp.org/index.php/List_of_useful_HTTP_headers

El encabezado Anti-MIME-Sniffing X-Content-Type-Options no estaba configurado para 'nosniff'. Esto permite versiones antiguas de Internet Explores y Chrome ejecutar MIME-sniffing en el cuerpo de la respuesta, causando potencialmente que el cuerpo de respuesta sea interpretado y desarrollado como un tipo de contenido diferente que el tipo de contenido declarado. Estos (principios de 2014) y versiones antiguas de Firefox preferiblemente usarán el tipo de contenido declarado (si hay uno establecido), antes que ejecutar el MIME-Sniffing.

Asegúrese que el servidor de la aplicación/web establezca el encabezado Content-Type apropiadamente, y que esté establecido el encabezado X-Content-Type-Options en 'nosniff' para todas las páginas web.

Si es posible, asegúrese que el último usuario usa un navegador web complatible con los estándares y moderno que no ejecute MIME-sniffing en absoluto, o que pueda ser dirigida por el servidor de la aplicación/web para no ejecutar MIME-sniffing.

Este inconveniente aún aplica para páginas de error (401, 403, 500, etc) ya que esas páginas a menudo todavía están afectadas por problemas de inyección, en cuyos casos aún hay preocupación de buscadores rastreando páginas fuera de su tipo de contenido verídico. En límite 'alto' este escáner no alertará sobre las respuestas de error al cliente o servidor.

http://msdn.Microsoft.com/en-us/library/Ie/gg622941%28v=vs.85%29.aspx https://www.owasp.org/index.php/List_of_useful_HTTP_headers

The Anti-MIME-Sniffing header X-Content-Type-Options was not set to 'nosniff'. This allows older versions of Internet Explorer and Chrome to perform MIME-sniffing on the response body, potentially causing the response body to be interpreted and displayed as a content type other than the declared content type. Current (early 2014) and legacy versions of Firefox will use the declared content type (if one is set), rather than performing MIME-sniffing.

Ensure that the application/web server sets the Content-Type header appropriately, and that it sets the X-Content-Type-Options header to 'nosniff' for all web pages.

If possible, ensure that the end user uses a standards-compliant and modern web browser that does not perform MIME-sniffing at all, or that can be directed by the web application/web server to not perform MIME-sniffing.

This issue still applies to error type pages (401, 403, 500, etc.) as those pages are often still affected by injection issues, in which case there is still concern for browsers sniffing pages away from their actual content type.

At "High" threshold this scanner will not alert on client or server error responses.

http://msdn.microsoft.com/en-us/library/ie/gg622941%28v=vs.85%29.aspx

https://www.owasp.org/index.php/List_of_useful_HTTP_headers

El encabezado Anti-MIME-Sniffing X-Content-Type-Options no estaba configurado para 'nosniff'. Esto permite versiones antiguas de Internet Explores y Chrome ejecutar MIME-sniffing en el cuerpo de la respuesta, causando potencialmente que el cuerpo de respuesta sea interpretado y desarrollado como un tipo de contenido diferente que el tipo de contenido declarado. Estos (principios de 2014) y versiones antiguas de Firefox preferiblemente usarán el tipo de contenido declarado (si hay uno establecido), antes que ejecutar el MIME-Sniffing.

Asegúrese que el servidor de la aplicación/web establezca el encabezado Content-Type apropiadamente, y que esté establecido el encabezado X-Content-Type-Options en 'nosniff' para todas las páginas web.

Si es posible, asegúrese que el último usuario usa un navegador web complatible con los estándares y moderno que no ejecute MIME-sniffing en absoluto, o que pueda ser dirigida por el servidor de la aplicación/web para no ejecutar MIME-sniffing.

Este inconveniente aún aplica para páginas de error (401, 403, 500, etc) ya que esas páginas a menudo todavía están afectadas por problemas de inyección, en cuyos casos aún hay preocupación de buscadores rastreando páginas fuera de su tipo de contenido verídico. En límite 'alto' este escáner no alertará sobre las respuestas de error al cliente o servidor.

http://msdn.Microsoft.com/en-us/library/Ie/gg622941%28v=vs.85%29.aspx https://www.owasp.org/index.php/List_of_useful_HTTP_headers

El cache-control y encabezado HTTP Pragma no han sido establecidos apropiadamente o faltan, permitiendo al navegador y servidores proxy almacenar contenido.

Siempre que sea posible asegurarse que el encabezado HTTP cache-control está establecido con no-cache, no-store, must-revalidate, y que el encabezado HTTP pragma esté establecido con no-cache.

https://www.owasp.org/index.php/Session_Management_Cheat_Sheet#Web_Content_Caching

The cache-control and pragma HTTP header have not been set properly or are missing allowing the browser and proxies to cache content.

Whenever possible ensure the cache-control HTTP header is set with no-cache, no-store, must-revalidate; and that the pragma HTTP header is set with no-cache.

https://www.owasp.org/index.php/Session_Management_Cheat_Sheet#Web_Content_Caching

The Anti-MIME-Sniffing header X-Content-Type-Options was not set to 'nosniff'. This allows older versions of Internet Explorer and Chrome to perform MIME-sniffing on the response body, potentially causing the response body to be interpreted and displayed as a content type other than the declared content type. Current (early 2014) and legacy versions of Firefox will use the declared content type (if one is set), rather than performing MIME-sniffing.

Ensure that the application/web server sets the Content-Type header appropriately, and that it sets the X-Content-Type-Options header to 'nosniff' for all web pages.

If possible, ensure that the end user uses a standards-compliant and modern web browser that does not perform MIME-sniffing at all, or that can be directed by the web application/web server to not perform MIME-sniffing.

This issue still applies to error type pages (401, 403, 500, etc.) as those pages are often still affected by injection issues, in which case there is still concern for browsers sniffing pages away from their actual content type.

At "High" threshold this scanner will not alert on client or server error responses.

http://msdn.microsoft.com/en-us/library/ie/gg622941%28v=vs.85%29.aspx

https://www.owasp.org/index.php/List_of_useful_HTTP_headers

El encabezado Anti-MIME-Sniffing X-Content-Type-Options no estaba configurado para 'nosniff'. Esto permite versiones antiguas de Internet Explores y Chrome ejecutar MIME-sniffing en el cuerpo de la respuesta, causando potencialmente que el cuerpo de respuesta sea interpretado y desarrollado como un tipo de contenido diferente que el tipo de contenido declarado. Estos (principios de 2014) y versiones antiguas de Firefox preferiblemente usarán el tipo de contenido declarado (si hay uno establecido), antes que ejecutar el MIME-Sniffing.

Asegúrese que el servidor de la aplicación/web establezca el encabezado Content-Type apropiadamente, y que esté establecido el encabezado X-Content-Type-Options en 'nosniff' para todas las páginas web.

Si es posible, asegúrese que el último usuario usa un navegador web complatible con los estándares y moderno que no ejecute MIME-sniffing en absoluto, o que pueda ser dirigida por el servidor de la aplicación/web para no ejecutar MIME-sniffing.

Este inconveniente aún aplica para páginas de error (401, 403, 500, etc) ya que esas páginas a menudo todavía están afectadas por problemas de inyección, en cuyos casos aún hay preocupación de buscadores rastreando páginas fuera de su tipo de contenido verídico. En límite 'alto' este escáner no alertará sobre las respuestas de error al cliente o servidor.

http://msdn.Microsoft.com/en-us/library/Ie/gg622941%28v=vs.85%29.aspx https://www.owasp.org/index.php/List_of_useful_HTTP_headers

A XSS attack was reflected in a JSON response, this might leave content consumers vulnerable to attack if they don't appropriately handle the data (response).

Frase: Arquitectura y Diseño

Utilice una biblioteca o marco comprobado que no acepte que ocura esta debilidad o que proporcione construcciones que permitan que esta debilidad sea mas sencilla de evitar.

Los ejemplos de las bibliotecas y marcos que facilitan el origen de resultados que son codificados de forma correcta incluyen la biblioteca Anti-XSS de Microsoft, el módulo de codificación OWASP ESAPI y Apache Wicket.

Fases: Implementación; Arquitectura y Diseño

Comprenda el contexto en el que se va a utilizar sus datos y la condificación que se va a esperar. Esto es fundamentalmente importante cuando se transmiten los datos entre diferentes componentes o cuando se generan las salidas que pueden comprender múltiples codificaciones al mismo tiempo, como paginas web o mensajes de correos de varias zonas. Estudie todos los protocolos de comunicacón y representaciones de los datos que son esperadas para poder determinar las estrategias de codificación que son necesarias.

Por cualquier dato que se enviará a otra página web, en especial cualquier dato recibido de las entradas externas, utiice la codificación que sea conveniente en todos los caracteres que no sean alfanuméricos.

Consulte la hoja de referencia de prevención de CSS para poder obtener más información detallada de los diferentes tipos de condificación y escape que se requieren.

Fase: Arquitectura y Diseño

Cualquier comprobación de seguridad que se vaya a realizar en el lado del cliente, asegúrese de que estas comprobaciones se encuentre duplicadas en el lado del servidor, para evitar el CWE-602. Los atacantes pueden eludir las comprobaciones del lado del cliente modificando los valores después de que se hayan realizado las comprobaciones, o cambiando al cliente para poder eliminar de forma completa las comprobaciones del lado del cliente. Después, estos valores que fueron modificados serán enviados al servidor.

Si se encuentra disponible, utilice los mecanismos estructurados que apliquen de forma automática la separación entre los datos y códigos. Estos mecanismos pueden otorgar la cotización, codificación y validación relevantes de manera automática, en lugar de confiar en que el desarrollador proporcione esta capacidad en cada uno de los puntos donde se origina la salida.

Fase: Implementación

Para cada una de las páginas web que se origina, utilice y especifique una codificación de caracteres como ISO-8859 o UTF-8. Cuando no se puede especificar una condificación, el navegador web podría selaccionar una codificación distinta adivinando que codificiación está siendo utilizada en verdad por la página web. Esto puede permitir que el navegador web trate varias secuencias como especiales, abriendo al cliente a leves ataques XSS. Consulte CWE-116 para conseguir más mitigaciones con respecto a la codificación/escape.

Para ayudar a mitigar los ataques XSS contra las cookies de la sesión del usuario, es necesario establecer que la cookie de la sesión sea HttpOnly. En navegadores que son compatibles con la característica HttpOnly (como las versiones más actualizadas de internet explorer y firefox), esta característica puede prevenir que la cookie de sesión del usuario sea accesible para las secuencias de comandos del lado del cliente malignas que utilizan document.cookie. Esta no es una solución muy completa, ya que HttpOnly no es compatible con todos los navegadores que hay. Más importante aún, XMLHTTPRequest y otras tecnologías poderosas de navegador otorgan acceso de lectura a los encabezados HTTP, incluido el encabezado Set-Cookie en el cual se establece el indicador HttpOnly.

Asuma que toda la entrada es maliciosa. Utilice una estrategia de validación de entrada "aceptar bien conocidos", es decir, utilice alguna lista blanca de entradas aceptables que se ajuste de forma estricta a las especificaciones. Rechace cualquier entrada que no se adapte de forma estricta a las especificaciones, o cambielas por algo que sí lo haga. No confíe solamente en la búsqueda de entradas maliciosas o malformadas (es decir, no confíe en una lista negra). Sin embargo, las listas negras pueden ser muy útiles para detectar posibles ataques o diagnosticar que entradas están tan malformadas que se deberían rechazar directamente.

Al realizar la validación de entrada, usted debe considerar todas las propiedades potencialmente destacadas, incluida la longitud, el tipo de entrada, el rango completo de valores aceptables, las entradas faltantes o adicionales, la sintaxis, el sentido entre los campos que se encuentran relacionados y la conformidad con todas las reglas comerciales. Como un ejemplo de lógica de las reglas comerciales, "boat"quizás sintácticamente puede ser válido porque solo posee caracteres alfanúmericos, pero no es válido si está esperando como "rojo" o "azul".

Asegurese de hacer la aceptación de las entradas en interfaces que se encuentren bien definidas dentro de la aplicación. Esto ayudará a cuidar la aplicación, incluso si un elemento se utiliza de nuevo o traslada a otro sitio.

Iniciado con POCA confianza, puesto que el contenido (Content-Type) no es HTML

http://projects.webappsec.org/Cross-Site-Scripting

http://cwe.mitre.org/data/definitions/79.html

The response appears to contain suspicious comments which may help an attacker.

Remove all comments that return information that may help an attacker and fix any underlying problems they refer to.

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Use moment.locale instead.",de),i.langData=S("moment.langData is deprecated. 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this.throwIfDisposed(),dt.clipByValue(this,t,e)},t.prototype.relu=function(){return this.throwIfDisposed(),dt.relu(this)},t.prototype.elu=function(){return this.throwIfDisposed(),dt.elu(this)},t.prototype.selu=function(){return this.throwIfDisposed(),dt.selu(this)},t.prototype.leakyRelu=function(t){return void 0===t&&(t=.2),this.throwIfDisposed(),dt.leakyRelu(this,t)},t.prototype.prelu=function(t){return this.throwIfDisposed(),dt.prelu(this,t)},t.prototype.sigmoid=function(){return this.throwIfDisposed(),dt.sigmoid(this)},t.prototype.logSigmoid=function(){return this.throwIfDisposed(),dt.logSigmoid(this)},t.prototype.softplus=function(){return this.throwIfDisposed(),dt.softplus(this)},t.prototype.zerosLike=function(){return this.throwIfDisposed(),dt.zerosLike(this)},t.prototype.onesLike=function(){return this.throwIfDisposed(),dt.onesLike(this)},t.prototype.sin=function(){return this.throwIfDisposed(),dt.sin(this)},t.prototype.cos=function(){return this.throwIfDisposed(),dt.cos(this)},t.prototype.tan=function(){return this.throwIfDisposed(),dt.tan(this)},t.prototype.asin=function(){return this.throwIfDisposed(),dt.asin(this)},t.prototype.acos=function(){return this.throwIfDisposed(),dt.acos(this)},t.prototype.atan=function(){return this.throwIfDisposed(),dt.atan(this)},t.prototype.sinh=function(){return this.throwIfDisposed(),dt.sinh(this)},t.prototype.cosh=function(){return this.throwIfDisposed(),dt.cosh(this)},t.prototype.tanh=function(){return this.throwIfDisposed(),dt.tanh(this)},t.prototype.asinh=function(){return this.throwIfDisposed(),dt.asinh(this)},t.prototype.acosh=function(){return this.throwIfDisposed(),dt.acosh(this)},t.prototype.atanh=function(){return this.throwIfDisposed(),dt.atanh(this)},t.prototype.erf=function(){return this.throwIfDisposed(),dt.erf(this)},t.prototype.round=function(){return this.throwIfDisposed(),dt.round(this)},t.prototype.step=function(t){return void 0===t&&(t=0),this.throwIfDisposed(),dt.step(this,t)},t.prototype.softmax=function(t){return void 0===t&&(t=-1),this.throwIfDisposed(),dt.softmax(this,t)},t.prototype.logSoftmax=function(t){return void 0===t&&(t=-1),this.throwIfDisposed(),dt.logSoftmax(this,t)},t.prototype.resizeBilinear=function(t,e){return void 0===e&&(e=!1),this.throwIfDisposed(),dt.image.resizeBilinear(this,t,e)},t.prototype.resizeNearestNeighbor=function(t,e){return void 0===e&&(e=!1),this.throwIfDisposed(),dt.image.resizeNearestNeighbor(this,t,e)},t.prototype.conv1d=function(t,e,n,r,i,a){return void 0===r&&(r="NWC"),void 0===i&&(i=1),this.throwIfDisposed(),dt.conv1d(this,t,e,n,r,i,a)},t.prototype.conv2d=function(t,e,n,r,i,a){return void 0===r&&(r="NHWC"),void 0===i&&(i=[1,1]),this.throwIfDisposed(),dt.conv2d(this,t,e,n,r,i,a)},t.prototype.conv2dTranspose=function(t,e,n,r,i){return this.throwIfDisposed(),dt.conv2dTranspose(this,t,e,n,r,i)},t.prototype.depthwiseConv2D=function(t,e,n,r,i,a){return void 0===r&&(r="NHWC"),void 0===i&&(i=[1,1]),this.throwIfDisposed(),dt.depthwiseConv2d(this,t,e,n,r,i,a)},t.prototype.separableConv2d=function(t,e,n,r,i,a){return void 0===i&&(i=[1,1]),void 0===a&&(a="NHWC"),this.throwIfDisposed(),dt.separableConv2d(this,t,e,n,r,i,a)},t.prototype.avgPool=function(t,e,n,r){return this.throwIfDisposed(),dt.avgPool(this,t,e,n,r)},t.prototype.maxPool=function(t,e,n,r){return this.throwIfDisposed(),dt.maxPool(this,t,e,n,r)},t.prototype.localResponseNormalization=function(t,e,n,r){return void 0===t&&(t=5),void 0===e&&(e=1),void 0===n&&(n=1),void 0===r&&(r=.5),dt.localResponseNormalization(this,t,e,n,r)},t.prototype.pool=function(t,e,n,r,i){return this.throwIfDisposed(),dt.pool(this,t,e,n,r,i)},t.prototype.variable=function(t,e,n){return void 0===t&&(t=!0),this.throwIfDisposed(),pt.variable(this,t,e,n)},t.prototype.unsortedSegmentSum=function(t,e){return this.throwIfDisposed(),dt.unsortedSegmentSum(this,t,e)},t.prototype.batchToSpaceND=function(t,e){return this.throwIfDisposed(),dt.batchToSpaceND(this,t,e)},t.prototype.spaceToBatchND=function(t,e){return this.throwIfDisposed(),dt.spaceToBatchND(this,t,e)},t.prototype.topk=function(t,e){return void 0===t&&(t=1),void 0===e&&(e=!0),this.throwIfDisposed(),dt.topk(this,t,e)},t.prototype.stridedSlice=function(t,e,n,r,i,a,o,s){return void 0===r&&(r=0),void 0===i&&(i=0),void 0===a&&(a=0),void 0===o&&(o=0),void 0===s&&(s=0),this.throwIfDisposed(),dt.stridedSlice(this,t,e,n,r,i,a,o,s)},t.prototype.depthToSpace=function(t,e){return this.throwIfDisposed(),dt.depthToSpace(this,t,e)},t.prototype.fft=function(){return this.throwIfDisposed(),dt.spectral.fft(this)},t.prototype.ifft=function(){return this.throwIfDisposed(),dt.spectral.ifft(this)},t.prototype.rfft=function(){return this.throwIfDisposed(),dt.spectral.rfft(this)},t.prototype.irfft=function(){return this.throwIfDisposed(),dt.spectral.irfft(this)},t}();Object.defineProperty(ht,Symbol.hasInstance,{value:function(t){return!!t&&null!=t.dataId&&null!=t.shape&&null!=t.dtype}});var pt=function(t){function e(e,n,r){void 0===n&&(n=!0);var i=t.call(this,e.shape,e.dtype,null,e.dataId)||this;i.trainable=n,i.name=r,null==i.name&&(i.name=lt().nextVariableId().toString());try{lt().registerVariable(i)}catch(t){throw lt().disposeTensor(i),t}return i}return s(e,t),e.variable=function(t,n,r,i){return void 0===n&&(n=!0),null!=i&&i!==t.dtype&&(t=t.asType(i)),new e(t,n,r)},e.prototype.assign=function(t){if(t.dtype!==this.dtype)throw new Error("dtype of the new value ("+t.dtype+") and previous value ("+this.dtype+") must match");if(!C(t.shape,this.shape))throw new Error("shape of the new value ("+t.shape+") and previous value ("+this.shape+") must match");lt().disposeTensor(this),this.dataId=t.dataId,lt().registerTensor(this)},e}(ht);Object.defineProperty(pt,Symbol.hasInstance,{value:function(t){return t instanceof ht&&null!=t.assign&&t.assign instanceof Function}});var mt,vt,_t,gt,bt,yt;pt.variable;(yt=mt||(mt={})).R0="R0",yt.R1="R1",yt.R2="R2",yt.R3="R3",yt.R4="R4",yt.R5="R5",yt.R6="R6",function(t){t.float32="float32",t.int32="int32",t.bool="int32",t.complex64="complex64"}(vt||(vt={})),function(t){t.float32="float32",t.int32="int32",t.bool="bool",t.complex64="complex64"}(_t||(_t={})),function(t){t.float32="float32",t.int32="float32",t.bool="float32",t.complex64="complex64"}(gt||(gt={})),function(t){t.float32="complex64",t.int32="complex64",t.bool="complex64",t.complex64="complex64"}(bt||(bt={}));var xt={float32:gt,int32:vt,bool:_t,complex64:bt};function wt(t,e){if("string"===t||"string"===e){if("string"===t&&"string"===e)return"string";throw new Error("Can not upcast "+t+" with "+e)}return xt[t][e]}function kt(t){return wt(t,"int32")}function Ct(t,e){if(t.dtype===e.dtype)return[t,e];var n=wt(t.dtype,e.dtype);return[t.cast(n),e.cast(n)]}function Et(t,e){b(t.dtype===e.dtype,function(){return"The dtypes of the first("+t.dtype+") and second("+e.dtype+") input must match"})}function St(t){var e=[];return function t(e,n,r){if(null!=e)if(e instanceof ht)n.push(e);else if(function(t){return Array.isArray(t)||"object"==typeof t}(e)){var i=e;for(var a in i){var o=i[a];r.has(o)||(r.add(o),t(o,n,r))}}}(t,e,new Set),e}Object.freeze({makeTypesMatch:Ct,assertTypesMatch:Et,isTensorInList:function(t,e){for(var n=0;n<e.length;n++)if(e[n].id===t.id)return!0;return!1},getTensorsInContainer:St});var It,Mt=function(){function t(t,e,n){this.backend=t,this.safeMode=e,this.debugMode=n,this.registeredVariables={},this.nextTapeNodeId=0,this.numBytes=0,this.numTensors=0,this.numStringTensors=0,this.numDataBuffers=0,this.profiling=!1,this.gradientDepth=0,this.kernelDepth=0,this.scopeStack=[],this.nextScopeId=0,this.tensorInfo=new WeakMap,this.profiler=new tt(t),this.activeProfile={newBytes:0,newTensors:0,peakBytes:0,kernels:[],result:null}}return t.prototype.moveData=function(t){this.write(t,this.readSync(t))},t.prototype.tidy=function(t,e){var n,r=this,i=null;if(null==e){if("function"!=typeof t)throw new Error("Please provide a function to tidy()");e=t}else{if("string"!=typeof t&&!(t instanceof String))throw new Error("When calling with two arguments, the first argument to tidy() must be a string");if("function"!=typeof e)throw new Error("When calling with two arguments, the 2nd argument to tidy() must be a function");i=t}return this.scopedRun(function(){return r.startScope(i)},function(){return r.endScope(n)},function(){return(n=e())instanceof Promise&&console.error("Cannot return a Promise inside of tidy."),n})},t.prototype.scopedRun=function(t,e,n){t();try{var r=n();return e(),r}catch(t){throw e(),t}},t.prototype.nextTensorId=function(){return t.nextTensorId++},t.prototype.nextVariableId=function(){return t.nextVariableId++},t.prototype.clone=function(t){var e=ht.make(t.shape,{dataId:t.dataId},t.dtype);return this.addTapeNode([t],e,function(t){return[t.toFloat()]}),e},t.prototype.runKernel=function(t,e,n){var r,i=this,a=[],o=this.isTapeOn(),s=null!=this.activeScope?this.activeScope.name:"",c=function(t){o&&(a=t.map(function(t){return i.keep(i.clone(t))}))},u=this.numBytes,l=this.numTensors;if(this.scopedRun(function(){return i.kernelDepth++},function(){return i.kernelDepth--},function(){r=i.debugMode()?i.profiler.profileKernel(s,function(){return t(i.backend,c)}):t(i.backend,c)}),o){var d={id:this.nextTapeNodeId++,name:s,inputs:e,outputs:Array.isArray(r)?r:[r],saved:a};null!=n&&(d.gradient=function(t){return n(t,a)}),this.activeTape.push(d)}return this.profiling&&this.activeProfile.kernels.push({name:s,bytesAdded:this.numBytes-u,totalBytesSnapshot:this.numBytes,tensorsAdded:this.numTensors-l,totalTensorsSnapshot:this.numTensors,inputShapes:Object.keys(e).map(function(t){return e[t].shape}),outputShape:Array.isArray(r)?r.map(function(t){return t.shape}):r.shape}),r},t.prototype.registerTensor=function(t,e){var n=this.tensorInfo.has(t.dataId)?this.tensorInfo.get(t.dataId).refCount:0;if(this.numTensors++,"string"===t.dtype&&this.numStringTensors++,0===n){this.numDataBuffers++;var r=0;"complex64"!==t.dtype&&"string"!==t.dtype&&(r=t.size*F(t.dtype)),this.tensorInfo.set(t.dataId,{backend:null!=e?e:this.backend,dtype:t.dtype,shape:t.shape,bytes:r,refCount:0}),this.numBytes+=r,null!=e?e.register(t.dataId,t.shape,t.dtype):this.backend.register(t.dataId,t.shape,t.dtype)}this.tensorInfo.get(t.dataId).refCount++,t instanceof pt||this.track(t)},t.prototype.registerVariable=function(t){if(null!=this.registeredVariables[t.name])throw new Error("Variable with name "+t.name+" was already registered");this.registeredVariables[t.name]=t},t.prototype.disposeTensor=function(t){if(this.tensorInfo.has(t.dataId)){this.numTensors--,"string"===t.dtype&&this.numStringTensors--;var e=this.tensorInfo.get(t.dataId);e.refCount<=1?("complex64"!==t.dtype&&(this.numBytes-=e.bytes),this.numDataBuffers--,e.backend.disposeData(t.dataId),this.tensorInfo.delete(t.dataId)):this.tensorInfo.get(t.dataId).refCount--}},t.prototype.disposeVariables=function(){for(var t in this.registeredVariables){var e=this.registeredVariables[t];this.disposeTensor(e),delete this.registeredVariables[t]}},t.prototype.memory=function(){var t=this.backend.memory();return t.numTensors=this.numTensors,t.numDataBuffers=this.numDataBuffers,t.numBytes=this.numBytes,this.numStringTensors>0&&(t.unreliable=!0,null==t.reasons&&(t.reasons=[]),t.reasons.push("Memory usage by string tensors is approximate (2 bytes per character)")),t},t.prototype.profile=function(t){return u(this,void 0,void 0,function(){var e,n;return l(this,function(r){return this.profiling=!0,e=this.numBytes,n=this.numTensors,this.activeProfile.kernels=[],this.activeProfile.result=t(),this.profiling=!1,this.activeProfile.peakBytes=Math.max.apply(Math,this.activeProfile.kernels.map(function(t){return t.totalBytesSnapshot})),this.activeProfile.newBytes=this.numBytes-e,this.activeProfile.newTensors=this.numTensors-n,[2,this.activeProfile]})})},t.prototype.isTapeOn=function(){return this.gradientDepth>0&&0===this.kernelDepth},t.prototype.addTapeNode=function(t,e,n){var r={};t.forEach(function(t,e){r[e]=t});var i={id:this.nextTapeNodeId++,name:this.activeScope.name,inputs:r,outputs:[e],gradient:function(t){var e={};return n(t).forEach(function(t,n){e[n]=function(){return t}}),e}};this.activeTape.push(i)},t.prototype.keep=function(t){if(1===this.scopeStack.length&&this.safeMode)throw new Error("Safe mode is ON. Enclose all tensor operations inside tf.tidy(): tf.tidy(() => {...}) to avoid memory leaks.");return t.kept=!0,t},t.prototype.startTape=function(){0===this.gradientDepth&&(this.activeTape=[]),this.gradientDepth++},t.prototype.endTape=function(){this.gradientDepth--},t.prototype.startScope=function(t){var e={track:[],name:"unnamed scope",id:this.nextScopeId++};t&&(e.name=t),this.scopeStack.push(e),this.activeScope=e},t.prototype.endScope=function(t){for(var e=this,n=St(t),r=new Set(n.map(function(t){return t.id})),i=0;i<this.activeScope.track.length;i++){var a=this.activeScope.track[i];a.kept||r.has(a.id)||a.dispose()}var o=this.scopeStack.pop();this.activeScope=0===this.scopeStack.length?null:this.scopeStack[this.scopeStack.length-1],n.forEach(function(t){t.kept||t.scopeId!==o.id||e.track(t)})},t.prototype.gradients=function(t,e,n,r){var i=this;if(void 0===r&&(r=!1),b(e.length>0,function(){return"gradients() received an empty list of xs."}),null!=n&&"float32"!==n.dtype)throw new Error("dy must have 'float32' dtype, but has '"+n.dtype+"'");var a=this.scopedRun(function(){return i.startTape()},function(){return i.endTape()},function(){return i.tidy("forward",t)});b(a instanceof ht,function(){return"The result y returned by f() must be a tensor."});var o=function(t,e,n){for(var r={},i={},a=0;a<e.length;a++)r[e[a].id]=!0;for(a=0;a<t.length;a++){var o=(p=t[a]).inputs;for(var s in o){for(var c=o[s],u=!1,l=0;l<e.length;l++)if(r[c.id]){p.outputs.forEach(function(t){return r[t.id]=!0}),u=!0,i[p.id]=!0;break}if(u)break}}var d={};d[n.id]=!0;var f={};for(a=t.length-1;a>=0;a--)for(o=(p=t[a]).inputs,l=0;l<p.outputs.length;l++)if(d[p.outputs[l].id]){for(var s in o)d[o[s].id]=!0,f[p.id]=!0;break}var h=[];for(a=0;a<t.length;a++){var p;if(i[(p=t[a]).id]&&f[p.id]){var m={};for(var s in p.inputs){var v=p.inputs[s];r[v.id]&&(m[s]=v)}var _=Object.assign({},p);_.inputs=m,_.outputs=p.outputs,h.push(_)}}return h}(this.activeTape,e,a);if(!r&&0===o.length&&e.length>0)throw new Error("Cannot compute gradient of y=f(x) with respect to x. 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implemented")},t.prototype.eluDer=function(t,e){throw new Error("Not yet implemented")},t.prototype.selu=function(t){throw new Error("Not yet implemented")},t.prototype.int=function(t){throw new Error("Not yet implemented")},t.prototype.clip=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.abs=function(t){throw new Error("Not yet implemented")},t.prototype.complexAbs=function(t){throw new Error("Not yet implemented")},t.prototype.sigmoid=function(t){throw new Error("Not yet implemented")},t.prototype.softplus=function(t){throw new Error("Not yet implemented")},t.prototype.sin=function(t){throw new Error("Not yet implemented")},t.prototype.cos=function(t){throw new Error("Not yet implemented")},t.prototype.tan=function(t){throw new Error("Not yet implemented")},t.prototype.asin=function(t){throw new Error("Not yet implemented")},t.prototype.acos=function(t){throw new Error("Not yet implemented")},t.prototype.atan=function(t){throw new Error("Not yet implemented")},t.prototype.atan2=function(t,e){throw new Error("Not yet implemented")},t.prototype.sinh=function(t){throw new Error("Not yet implemented")},t.prototype.cosh=function(t){throw new Error("Not yet implemented")},t.prototype.tanh=function(t){throw new Error("Not yet implemented")},t.prototype.asinh=function(t){throw new Error("Not yet implemented")},t.prototype.acosh=function(t){throw new Error("Not yet implemented")},t.prototype.atanh=function(t){throw new Error("Not yet implemented")},t.prototype.erf=function(t){throw new Error("Not yet implemented")},t.prototype.step=function(t,e){throw new Error("Not yet implemented")},t.prototype.conv2d=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.conv2dDerInput=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.conv2dDerFilter=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.depthwiseConv2D=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.depthwiseConv2DDerInput=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.depthwiseConv2DDerFilter=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.conv3d=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.conv3dDerInput=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.conv3dDerFilter=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.maxPool=function(t,e){throw new Error("Not yet implemented")},t.prototype.maxPoolBackprop=function(t,e,n,r){throw new Error("Not yet implemented")},t.prototype.avgPool=function(t,e){throw new Error("Not yet implemented")},t.prototype.avgPoolBackprop=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.reshape=function(t,e){throw new Error("Not yet implemented")},t.prototype.cast=function(t,e){throw new Error("Not yet implemented")},t.prototype.tile=function(t,e){throw new Error("Not yet implemented")},t.prototype.pad=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.transpose=function(t,e){throw new Error("Not yet implemented")},t.prototype.gather=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.gatherND=function(t,e){throw new Error("Not yet implemented")},t.prototype.scatterND=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.batchToSpaceND=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.spaceToBatchND=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.resizeBilinear=function(t,e,n,r){throw new Error("Not yet implemented")},t.prototype.resizeBilinearBackprop=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.resizeNearestNeighbor=function(t,e,n,r){throw new Error("Not yet implemented")},t.prototype.resizeNearestNeighborBackprop=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.batchNormalization=function(t,e,n,r,i,a){throw new Error("Not yet implemented")},t.prototype.localResponseNormalization4D=function(t,e,n,r,i){throw new Error("Not yet implemented")},t.prototype.LRNGrad=function(t,e,n,r,i,a,o){throw new Error("Not yet implemented")},t.prototype.multinomial=function(t,e,n,r){throw new Error("Not yet implemented")},t.prototype.oneHot=function(t,e,n,r){throw new Error("Not yet implemented")},t.prototype.cumsum=function(t,e,n,r){throw new Error("Not yet implemented")},t.prototype.nonMaxSuppression=function(t,e,n,r,i){throw new Error("Not yet implemented")},t.prototype.fft=function(t){throw new Error("Not yet implemented")},t.prototype.ifft=function(t){throw new Error("Not yet implemented")},t.prototype.complex=function(t,e){throw new Error("Not yet implemented")},t.prototype.real=function(t){throw new Error("Not yet implemented")},t.prototype.imag=function(t){throw new Error("Not yet implemented")},t.prototype.cropAndResize=function(t,e,n,r,i,a){throw new Error("Not yet implemented")},t.prototype.depthToSpace=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.split=function(t,e,n){throw new Error("Not yet implemented")},t.prototype.sparseToDense=function(t,e,n,r){throw new Error("Not yet implemented")},t.prototype.fill=function(t,e,n){throw new Error("Not yet implemented.")},t.prototype.onesLike=function(t){throw new Error("Not yet implemented")},t.prototype.zerosLike=function(t){throw new Error("Not yet implemented")},t.prototype.setDataMover=function(t){throw new Error("Not yet implemented")},t.prototype.dispose=function(){throw new Error("Not yet implemented")}}();function Ye(t,e,n){if("complex64"===e){if("complex64"===t.dtype)return t.clone();var r=Le(t.shape),i=t.toFloat(),a=n.complex(i,r);return r.dispose(),i.dispose(),a}if(!B(t.dtype,e))return ht.make(t.shape,{dataId:t.dataId},e);if("complex64"===t.dtype){var o=n.real(t);return a=o.cast(e),o.dispose(),a}if("int32"===e)return n.int(t);if("bool"===e){var s=Me(0,t.dtype);return 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r=t.subarray(4*e,4*e+4),i=t.subarray(4*n,4*n+4),a=Math.min(r[0],r[2]),o=Math.min(r[1],r[3]),s=Math.max(r[0],r[2]),c=Math.max(r[1],r[3]),u=Math.min(i[0],i[2]),l=Math.min(i[1],i[3]),d=Math.max(i[0],i[2]),f=Math.max(i[1],i[3]),h=(s-a)*(c-o),p=(d-u)*(f-l);if(h<=0||p<=0)return 0;var m=Math.max(a,u),v=Math.max(o,l),_=Math.min(s,d),g=Math.min(c,f),b=Math.max(_-m,0)*Math.max(g-v,0);return b/(h+p-b)}function Ge(t,e,n){var r=new Array(t.rank).fill(0),i=t.shape.slice();return e.map(function(e){i[n]=e;var a=t.slice(r,i);return r[n]+=e,a})}function Ke(t,e,n,r,i){for(var a=e[e.length-1],o=[t.length/a,a],s=o[0],c=o[1],u=O(n,s*r),l=O("int32",s*r),d=0;d<s;d++){for(var f=d*c,h=t.subarray(f,f+c),p=[],m=0;m<h.length;m++)p.push({value:h[m],index:m});p.sort(function(t,e){return e.value-t.value});var v=d*r,_=u.subarray(v,v+r),g=l.subarray(v,v+r);for(m=0;m<r;m++)_[m]=p[m].value,g[m]=p[m].index}var b=e.slice();return b[b.length-1]=r,[Ie(u,b,n),Ie(l,b,"int32")]}var 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an(t){return 1===t.length?""+t[0]:"vec"+t.length+"("+t.join(",")+")"}function on(t,e,n,r){var i=[];t.forEach(function(t){var e=k(t.shapeInfo.logicalShape);t.shapeInfo.isUniform?i.push("uniform float "+t.name+(e>1?"["+e+"]":"")+";"):(i.push("uniform sampler2D "+t.name+";"),i.push("uniform int offset"+t.name+";"))});var a,o,s=i.join("\n"),c=t.map(function(t){return function(t,e,n){void 0===n&&(n=!1);var r="";r+=n?cn(t):sn(t);var i=t.shapeInfo.logicalShape,a=e.logicalShape;return i.length<=a.length&&(r+=n?function(t,e){var n,r=t.name,i=r.charAt(0).toUpperCase()+r.slice(1),a="get"+i+"AtOutCoords",o=t.shapeInfo.logicalShape.length,s=e.logicalShape.length,c=Qe(t.shapeInfo.logicalShape,e.logicalShape),u=mn(s),l=s-o,d=["x","y","z","w","u","v"];n=0===o?"":s<2&&c.length>=1?"coords = 0;":c.map(function(t){return"coords."+d[t+l]+" = 0;"}).join("\n");var f="";f=s<2&&o>0?"coords":t.shapeInfo.logicalShape.map(function(t,e){return"coords."+d[e+l]}).join(", ");var h="return 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u=mn(c),l=Qe(t.shapeInfo.logicalShape,e.logicalShape),d=c-s,f=["x","y","z","w","u","v"];return"\n float "+i+"() {\n "+u+" coords = getOutputCoords();\n "+(0===s?"":c<2&&l.length>=1?"coords = 0;":l.map(function(t){return"coords."+f[t+d]+" = 0;"}).join("\n"))+"\n return get"+r+"("+(c<2&&s>0?"coords":t.shapeInfo.logicalShape.map(function(t,e){return"coords."+f[e+d]}).join(", "))+");\n }\n "}(t,e)),r}(t,e,r)}).join("\n"),u=e.texShape,l=nn(),d=function(t){return"\n float sampleTexture(sampler2D textureSampler, vec2 uv) {\n return "+t.texture2D+"(textureSampler, uv).r;\n }\n "}(l),f=function(t){return t.version+"\n precision highp float;\n precision highp int;\n precision highp sampler2D;\n "+t.varyingFs+" vec2 resultUV;\n "+t.defineOutput+"\n const vec2 halfCR = vec2(0.5, 0.5);\n\n struct ivec5\n {\n int x;\n int y;\n int z;\n int w;\n int u;\n };\n\n struct ivec6\n {\n int x;\n int y;\n int z;\n int w;\n int u;\n int v;\n };\n\n "+t.defineSpecialNaN+"\n "+t.defineSpecialInf+"\n "+t.defineRound+"\n\n int imod(int x, int y) {\n return x - y * (x / y);\n }\n\n //Based on the work of Dave Hoskins\n //https://www.shadertoy.com/view/4djSRW\n #define HASHSCALE1 443.8975\n float random(float seed){\n vec2 p = resultUV * seed;\n vec3 p3 = fract(vec3(p.xyx) * HASHSCALE1);\n p3 += dot(p3, p3.yzx + 19.19);\n return fract((p3.x + p3.y) * p3.z);\n }\n\n "+un+"\n "+ln+"\n "+dn+"\n "}(l);return e.isPacked?(a=function(t,e){switch(t.length){case 0:return"\n int getOutputCoords() {\n return 0;\n }\n ";case 1:return function(t,e){var n=[Math.ceil(e[0]/2),Math.ceil(e[1]/2)];return 1===n[0]?"\n int getOutputCoords() {\n return 2 * int(resultUV.x * "+n[1]+".0);\n }\n ":1===n[1]?"\n int getOutputCoords() {\n return 2 * int(resultUV.y * "+n[0]+".0);\n }\n ":"\n int getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+n[0]+", "+n[1]+"));\n return resTexRC.x * "+n[1]+" + resTexRC.y;\n }\n "}(0,e);case 2:return function(t,e){var n=[Math.ceil(e[0]/2),Math.ceil(e[1]/2)];if(C(t,e))return"\n ivec2 getOutputCoords() {\n return 2 * ivec2(resultUV.yx * vec2("+n[0]+", "+n[1]+"));\n }\n ";var r=Math.ceil(t[1]/2);return"\n ivec2 getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+n[0]+", "+n[1]+"));\n\n int index = resTexRC.x * "+n[1]+" + resTexRC.y;\n int r = 2 * (index / "+r+");\n int c = imod(index, "+r+") * 2;\n\n return ivec2(r, c);\n }\n "}(t,e);case 3:return function(t,e){var n=[Math.ceil(e[0]/2),Math.ceil(e[1]/2)],r=Math.ceil(t[2]/2),i=r*Math.ceil(t[1]/2);return"\n ivec3 getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+n[0]+", "+n[1]+"));\n int index = resTexRC.x * "+n[1]+" + resTexRC.y;\n\n int b = index / "+i+";\n index -= b * "+i+";\n\n int r = 2 * (index / "+r+");\n int c = imod(index, "+r+") * 2;\n\n return ivec3(b, r, c);\n }\n "}(t,e);default:return function(t,e){for(var n=[Math.ceil(e[0]/2),Math.ceil(e[1]/2)],r=Math.ceil(t[t.length-1]/2),i=r*Math.ceil(t[t.length-2]/2),a=i,o="",s="b, r, c",c=2;c<t.length-1;c++)o="\n int b"+c+" = index / "+(a*=t[t.length-c-1])+";\n index -= b"+c+" * "+a+";\n "+o,s="b"+c+", "+s;return"\n ivec"+t.length+" getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+n[0]+", "+n[1]+"));\n int index = resTexRC.x * "+n[1]+" + resTexRC.y;\n\n "+o+"\n\n int b = index / "+i+";\n index -= b * "+i+";\n\n int r = 2 * (index / "+r+");\n int c = imod(index, "+r+") * 2;\n\n return ivec"+t.length+"("+s+");\n }\n "}(t,e)}}(e.logicalShape,u),o=function(t){return"\n void setOutput(vec4 val) {\n "+t.output+" = val;\n }\n "}(l)):(a=function(t,e){switch(t.length){case 0:return"\n int getOutputCoords() {\n return 0;\n }\n ";case 1:return function(t,e){return 1===e[0]?"\n int getOutputCoords() {\n return int(resultUV.x * "+e[1]+".0);\n }\n ":1===e[1]?"\n int getOutputCoords() {\n return int(resultUV.y * "+e[0]+".0);\n }\n ":"\n int getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+e[0]+", "+e[1]+"));\n return resTexRC.x * "+e[1]+" + resTexRC.y;\n }\n "}(0,e);case 2:return function(t,e){return C(t,e)?"\n ivec2 getOutputCoords() {\n return ivec2(resultUV.yx * vec2("+e[0]+", "+e[1]+"));\n }\n ":1===t[1]?"\n ivec2 getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+e[0]+", "+e[1]+"));\n int index = resTexRC.x * "+e[1]+" + resTexRC.y;\n return ivec2(index, 0);\n }\n ":1===t[0]?"\n ivec2 getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+e[0]+", "+e[1]+"));\n int index = resTexRC.x * "+e[1]+" + resTexRC.y;\n return ivec2(0, index);\n }\n ":"\n ivec2 getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+e[0]+", "+e[1]+"));\n int index = resTexRC.x * "+e[1]+" + resTexRC.y;\n int r = index / "+t[1]+";\n int c = index - r * "+t[1]+";\n return ivec2(r, c);\n }\n "}(t,e);case 3:return function(t,e){var n=rn(["r","c","d"],t);return"\n ivec3 getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+e[0]+", "+e[1]+"));\n int index = resTexRC.x * "+e[1]+" + resTexRC.y;\n "+n+"\n return ivec3(r, c, d);\n }\n "}(t,e);case 4:return function(t,e){var n=rn(["r","c","d","d2"],t);return"\n ivec4 getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+e[0]+", "+e[1]+"));\n int index = resTexRC.x * "+e[1]+" + resTexRC.y;\n "+n+"\n return ivec4(r, c, d, d2);\n }\n "}(t,e);case 5:return function(t,e){var n=rn(["r","c","d","d2","d3"],t);return"\n ivec5 getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx * vec2("+e[0]+",\n "+e[1]+"));\n\n int index = resTexRC.x * "+e[1]+" + resTexRC.y;\n\n "+n+"\n\n ivec5 outShape = ivec5(r, c, d, d2, d3);\n return outShape;\n }\n "}(t,e);case 6:return function(t,e){var n=rn(["r","c","d","d2","d3","d4"],t);return"\n ivec6 getOutputCoords() {\n ivec2 resTexRC = ivec2(resultUV.yx *\n vec2("+e[0]+", "+e[1]+"));\n int index = resTexRC.x * "+e[1]+" + resTexRC.y;\n\n "+n+"\n\n ivec6 result = ivec6(r, c, d, d2, d3, d4);\n return result;\n }\n "}(t,e);default:throw new Error(t.length+"-D output sampling is not yet supported")}}(e.logicalShape,u),o=function(t){return"\n void setOutput(float val) {\n "+t.output+" = vec4(val, 0, 0, 0);\n }\n "}(l)),r&&(f+=fn),[f,d,o,s,a,c,n].join("\n")}function sn(t){var e=t.shapeInfo.logicalShape;switch(e.length){case 0:return function(t){var e=t.name,n="get"+e.charAt(0).toUpperCase()+e.slice(1);if(t.shapeInfo.isUniform)return"float "+n+"() {return "+e+";}";var r=t.shapeInfo.texShape,i=r[0],a=r[1];if(1===i&&1===a)return"\n float "+n+"() {\n return sampleTexture("+e+", halfCR);\n }\n ";var o=t.shapeInfo.texShape;return"\n float "+n+"() {\n vec2 uv = uvFromFlat("+o[0]+", "+o[1]+", "+hn(e)+");\n return sampleTexture("+e+", uv);\n }\n "}(t);case 1:return function(t){var e=t.name,n="get"+e.charAt(0).toUpperCase()+e.slice(1);if(t.shapeInfo.isUniform)return"\n float "+n+"(int index) {\n "+pn(t)+"\n }\n ";var r=t.shapeInfo.texShape,i=r[0],a=r[1];if(1===a&&1===i)return"\n float "+n+"(int index) {\n return sampleTexture("+e+", halfCR);\n }\n ";var o=hn(e);return 1===a?"\n float "+n+"(int index) {\n vec2 uv = vec2(0.5, (float(index + "+o+") + 0.5) / "+i+".0);\n return sampleTexture("+e+", uv);\n }\n ":1===i?"\n float "+n+"(int index) {\n vec2 uv = vec2((float(index + "+o+") + 0.5) / "+a+".0, 0.5);\n return sampleTexture("+e+", uv);\n }\n ":"\n float "+n+"(int index) {\n vec2 uv = uvFromFlat("+i+", "+a+", index + "+o+");\n return sampleTexture("+e+", uv);\n }\n "}(t);case 2:return function(t){var e=t.shapeInfo.logicalShape,n=t.name,r="get"+n.charAt(0).toUpperCase()+n.slice(1),i=t.shapeInfo.texShape;if(null!=i&&C(e,i)){var a=i[0];return"\n float "+r+"(int row, int col) {\n vec2 uv = (vec2(col, row) + halfCR) / vec2("+i[1]+".0, "+a+".0);\n return sampleTexture("+n+", uv);\n }\n "}var o=P(e),s=o.newShape,c=o.keptDims,u=s;if(u.length<e.length)return"\n "+sn(vn(t,u))+"\n float "+r+"(int row, int col) {\n return "+r+"("+_n(["row","col"],c)+");\n }\n ";if(t.shapeInfo.isUniform)return"\n float "+r+"(int row, int col) {\n int index = round(dot(vec2(row, col), vec2("+e[1]+", 1)));\n "+pn(t)+"\n }\n ";var l=i[0],d=i[1],f=hn(n);return 1===d?"\n float "+r+"(int row, int col) {\n float index = dot(vec3(row, col, "+f+"), vec3("+e[1]+", 1, 1));\n vec2 uv = vec2(0.5, (index + 0.5) / "+l+".0);\n return sampleTexture("+n+", uv);\n }\n ":1===l?"\n float "+r+"(int row, int col) {\n float index = dot(vec3(row, col, "+f+"), vec3("+e[1]+", 1, 1));\n vec2 uv = vec2((index + 0.5) / "+d+".0, 0.5);\n return sampleTexture("+n+", uv);\n }\n ":"\n float "+r+"(int row, int col) {\n // Explicitly use integer operations as dot() only works on floats.\n int index = row * "+e[1]+" + col + "+f+";\n vec2 uv = uvFromFlat("+l+", "+d+", index);\n return sampleTexture("+n+", uv);\n }\n"}(t);case 3:return function(t){var e=t.shapeInfo.logicalShape,n=t.name,r="get"+n.charAt(0).toUpperCase()+n.slice(1),i=e[1]*e[2],a=e[2],o=P(e),s=o.newShape,c=o.keptDims,u=s;if(u.length<e.length)return"\n "+sn(vn(t,u))+"\n float "+r+"(int row, int col, int depth) {\n return "+r+"("+_n(["row","col","depth"],c)+");\n }\n ";if(t.shapeInfo.isUniform)return"\n float "+r+"(int row, int col, int depth) {\n int index = round(dot(vec3(row, col, depth),\n vec3("+i+", "+a+", 1)));\n "+pn(t)+"\n }\n ";var l=t.shapeInfo.texShape,d=l[0],f=l[1],h=t.shapeInfo.flatOffset;return f===i&&null==h?"\n float "+r+"(int row, int col, int depth) {\n float texR = float(row);\n float texC = dot(vec2(col, depth), vec2("+a+", 1));\n vec2 uv = (vec2(texC, texR) + halfCR) /\n vec2("+f+".0, "+d+".0);\n return sampleTexture("+n+", uv);\n }\n ":f===a&&null==h?"\n float "+r+"(int row, int col, int depth) {\n float texR = dot(vec2(row, col), vec2("+e[1]+", 1));\n float texC = float(depth);\n vec2 uv = (vec2(texC, texR) + halfCR) / vec2("+f+".0, "+d+".0);\n return sampleTexture("+n+", uv);\n }\n ":"\n float "+r+"(int row, int col, int depth) {\n // Explicitly use integer operations as dot() only works on floats.\n int index = row * "+i+" + col * "+a+" + depth + "+hn(n)+";\n vec2 uv = uvFromFlat("+d+", "+f+", index);\n return sampleTexture("+n+", uv);\n }\n "}(t);case 4:return function(t){var e=t.shapeInfo.logicalShape,n=t.name,r="get"+n.charAt(0).toUpperCase()+n.slice(1),i=e[3],a=e[2]*i,o=e[1]*a,s=P(e),c=s.newShape,u=s.keptDims;if(c.length<e.length)return"\n "+sn(vn(t,c))+"\n float "+r+"(int row, int col, int depth, int depth2) {\n return "+r+"("+_n(["row","col","depth","depth2"],u)+");\n }\n ";if(t.shapeInfo.isUniform)return"\n float "+r+"(int row, int col, int depth, int depth2) {\n int index = round(dot(vec4(row, col, depth, depth2),\n vec4("+o+", "+a+", "+i+", 1)));\n "+pn(t)+"\n }\n ";var l=t.shapeInfo.flatOffset,d=t.shapeInfo.texShape,f=d[0],h=d[1];return h===o&&null==l?"\n float "+r+"(int row, int col, int depth, int depth2) {\n float texR = float(row);\n float texC =\n dot(vec3(col, depth, depth2),\n vec3("+a+", "+i+", 1));\n vec2 uv = (vec2(texC, texR) + halfCR) /\n vec2("+h+".0, "+f+".0);\n return sampleTexture("+n+", uv);\n }\n ":h===i&&null==l?"\n float "+r+"(int row, int col, int depth, int depth2) {\n float texR = dot(vec3(row, col, depth),\n vec3("+e[1]*e[2]+", "+e[2]+", 1));\n float texC = float(depth2);\n vec2 uv = (vec2(texC, texR) + halfCR) /\n vec2("+h+".0, "+f+".0);\n return sampleTexture("+n+", uv);\n }\n ":"\n float "+r+"(int row, int col, int depth, int depth2) {\n // Explicitly use integer operations as dot() only works on floats.\n int index = row * "+o+" + col * "+a+" +\n depth * "+i+" + depth2;\n vec2 uv = uvFromFlat("+f+", "+h+", index + "+hn(n)+");\n return sampleTexture("+n+", uv);\n }\n "}(t);case 5:return function(t){var e=t.shapeInfo.logicalShape,n=t.name,r="get"+n.charAt(0).toUpperCase()+n.slice(1),i=e[4],a=e[3]*i,o=e[2]*a,s=e[1]*o,c=P(e),u=c.newShape,l=c.keptDims;if(u.length<e.length)return"\n "+sn(vn(t,u))+"\n float "+r+"(int row, int col, int depth, int depth2, int depth3) {\n return "+r+"("+_n(["row","col","depth","depth2","depth3"],l)+");\n }\n ";if(t.shapeInfo.isUniform)return"\n float "+r+"(int row, int col, int depth, int depth2, int depth3) {\n float index = dot(\n vec4(row, col, depth, depth2),\n vec4("+s+", "+o+", "+a+", "+i+")) +\n depth3;\n "+pn(t)+"\n }\n ";var d=t.shapeInfo.flatOffset,f=t.shapeInfo.texShape,h=f[0],p=f[1];return p===s&&null==d?"\n float "+r+"(int row, int col, int depth, int depth2, int depth3) {\n int texR = row;\n float texC = dot(vec4(col, depth, depth2, depth3),\n vec4("+o+", "+a+", "+i+", 1));\n vec2 uv = (vec2(texC, texR) + halfCR) /\n vec2("+p+".0, "+h+".0);\n return sampleTexture("+n+", uv);\n }\n ":p===i&&null==d?"\n float "+r+"(int row, int col, int depth, int depth2, int depth3) {\n float texR = dot(\n vec4(row, col, depth, depth2),\n vec4("+e[1]*e[2]*e[3]+",\n "+e[2]*e[3]+", "+e[3]+", 1));\n int texC = depth3;\n vec2 uv = (vec2(texC, texR) + halfCR) /\n vec2("+p+".0, "+h+".0);\n return sampleTexture("+n+", uv);\n }\n ":"\n float "+r+"(int row, int col, int depth, int depth2, int depth3) {\n // Explicitly use integer operations as dot() only works on floats.\n int index = row * "+s+" + col * "+o+" + depth * "+a+" +\n depth2 * "+i+" + depth3 + "+hn(n)+";\n vec2 uv = uvFromFlat("+h+", "+p+", index);\n return sampleTexture("+n+", uv);\n }\n "}(t);case 6:return function(t){var e=t.shapeInfo.logicalShape,n=t.name,r="get"+n.charAt(0).toUpperCase()+n.slice(1),i=P(e),a=i.newShape,o=i.keptDims;if(a.length<e.length)return"\n "+sn(vn(t,a))+"\n float "+r+"(int row, int col, int depth,\n int depth2, int depth3, int depth4) {\n return "+r+"("+_n(["row","col","depth","depth2","depth3","depth4"],o)+");\n }\n ";var s=e[5],c=e[4]*s,u=e[3]*c,l=e[2]*u,d=e[1]*l;if(t.shapeInfo.isUniform)return"\n float "+r+"(int row, int col, int depth,\n int depth2, int depth3, int depth4) {\n int index = round(dot(\n vec4(row, col, depth, depth2),\n vec4("+d+", "+l+", "+u+", "+c+")) +\n dot(\n vec2(depth3, depth4),\n vec2("+s+", 1)));\n "+pn(t)+"\n }\n ";var f=t.shapeInfo.flatOffset,h=t.shapeInfo.texShape,p=h[0],m=h[1];return m===d&&null==f?"\n float "+r+"(int row, int col, int depth,\n int depth2, int depth3, int depth4) {\n int texR = row;\n float texC = dot(vec4(col, depth, depth2, depth3),\n vec4("+l+", "+u+", "+c+", "+s+")) +\n float(depth4);\n vec2 uv = (vec2(texC, texR) + halfCR) /\n vec2("+m+".0, "+p+".0);\n return sampleTexture("+n+", uv);\n }\n ":m===s&&null==f?"\n float "+r+"(int row, int col, int depth,\n int depth2, int depth3, int depth4) {\n float texR = dot(vec4(row, col, depth, depth2),\n vec4("+e[1]*e[2]*e[3]*e[4]+",\n "+e[2]*e[3]*e[4]+",\n "+e[3]*e[4]+",\n "+e[4]+")) + float(depth3);\n int texC = depth4;\n vec2 uv = (vec2(texC, texR) + halfCR) /\n vec2("+m+".0, "+p+".0);\n return sampleTexture("+n+", uv);\n }\n ":"\n float "+r+"(int row, int col, int depth,\n int depth2, int depth3, int depth4) {\n // Explicitly use integer operations as dot() only works on floats.\n int index = row * "+d+" + col * "+l+" + depth * "+u+" +\n depth2 * "+c+" + depth3 * "+s+" + depth4 + "+hn(n)+";\n vec2 uv = uvFromFlat("+p+", "+m+", index);\n return sampleTexture("+n+", uv);\n }\n "}(t);default:throw new Error(e.length+"-D input sampling is not yet supported")}}function cn(t){switch(t.shapeInfo.logicalShape.length){case 0:return function(t){var e=t.name;return"\n vec4 get"+e.charAt(0).toUpperCase()+e.slice(1)+"() {\n return "+nn().texture2D+"("+e+", halfCR);\n }\n "}(t);case 1:return function(t){var e=t.name,n="get"+e.charAt(0).toUpperCase()+e.slice(1),r=t.shapeInfo.texShape,i=[Math.ceil(r[0]/2),Math.ceil(r[1]/2)],a=nn();return"\n vec4 "+n+"(int index) {\n vec2 uv = packedUVfrom1D(\n "+i[0]+", "+i[1]+", index);\n return "+a.texture2D+"("+e+", uv);\n }\n "}(t);case 2:return function(t){var e=t.shapeInfo.logicalShape,n=t.name,r="get"+n.charAt(0).toUpperCase()+n.slice(1),i=t.shapeInfo.texShape,a=i[0],o=i[1],s=nn();if(null!=i&&C(e,i))return"\n vec4 "+r+"(int row, int col) {\n vec2 uv = (vec2(col, row) + halfCR) / vec2("+o+".0, "+a+".0);\n\n return "+s.texture2D+"("+n+", uv);\n }\n ";var c=[Math.ceil(i[0]/2),Math.ceil(i[1]/2)];return"\n vec4 "+r+"(int row, int col) {\n vec2 uv = packedUVfrom2D("+Math.ceil(e[1]/2)+", "+c[0]+", "+c[1]+", row, col);\n return "+s.texture2D+"("+n+", uv);\n }\n "}(t);case 3:return function(t){var e=t.shapeInfo.logicalShape,n=t.name,r="get"+n.charAt(0).toUpperCase()+n.slice(1),i=t.shapeInfo.texShape,a=[Math.ceil(i[0]/2),Math.ceil(i[1]/2)];if(1===e[0])return"\n "+cn(vn(t,e.slice(1)))+"\n vec4 "+r+"(int b, int row, int col) {\n return "+r+"("+_n(["b","row","col"],[1,2])+");\n }\n ";var o=a[0],s=a[1],c=Math.ceil(e[2]/2);return"\n vec4 "+r+"(int b, int row, int col) {\n vec2 uv = packedUVfrom3D(\n "+o+", "+s+", "+c*Math.ceil(e[1]/2)+", "+c+", b, row, col);\n return "+nn().texture2D+"("+n+", uv);\n }\n "}(t);default:return function(t){for(var e=t.shapeInfo.logicalShape,n=e.length,r=t.name,i="get"+r.charAt(0).toUpperCase()+r.slice(1),a=t.shapeInfo.texShape,o=[Math.ceil(a[0]/2),Math.ceil(a[1]/2)],s=o[0],c=o[1],u=Math.ceil(e[n-1]/2),l=u*Math.ceil(e[n-2]/2),d="int b, int row, int col",f="b * "+l+" + (row / 2) * "+u+" + (col / 2)",h=2;h<n-1;h++)d="int b"+h+", "+d,f="b"+h+" * "+(l*=e[n-h-1])+" + "+f;return"\n vec4 "+i+"("+d+") {\n int index = "+f+";\n int texR = index / "+c+";\n int texC = index - texR * "+c+";\n vec2 uv = (vec2(texC, texR) + halfCR) / vec2("+c+", "+s+");\n return "+nn().texture2D+"("+r+", uv);\n }\n "}(t)}}var un="\nvec2 uvFromFlat(int texNumR, int texNumC, int index) {\n int texR = index / texNumC;\n int texC = index - texR * texNumC;\n return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);\n}\nvec2 packedUVfrom1D(int texNumR, int texNumC, int index) {\n int texelIndex = index / 2;\n int texR = texelIndex / texNumC;\n int texC = texelIndex - texR * texNumC;\n return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);\n}\n",ln="\nvec2 packedUVfrom2D(int texelsInLogicalRow, int texNumR,\n int texNumC, int row, int col) {\n int texelIndex = (row / 2) * texelsInLogicalRow + (col / 2);\n int texR = texelIndex / texNumC;\n int texC = texelIndex - texR * texNumC;\n return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);\n}\n",dn="\nvec2 packedUVfrom3D(int texNumR, int texNumC,\n int texelsInBatch, int texelsInLogicalRow, int b,\n int row, int col) {\n int index = b * texelsInBatch + (row / 2) * texelsInLogicalRow + (col / 2);\n int texR = index / texNumC;\n int texC = index - texR * texNumC;\n return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);\n}\n",fn="\n float getChannel(vec4 frag, vec2 innerDims) {\n vec2 modCoord = mod(innerDims, 2.);\n return modCoord.x == 0. ?\n (modCoord.y == 0. ? frag.r : frag.g) :\n (modCoord.y == 0. ? frag.b : frag.a);\n }\n float getChannel(vec4 frag, int dim) {\n float modCoord = mod(float(dim), 2.);\n return modCoord == 0. ? frag.r : frag.g;\n }\n";function hn(t){return"offset"+t}function pn(t){var e=t.name,n=k(t.shapeInfo.logicalShape);return n<2?"return "+e+";":"\n for (int i = 0; i < "+n+"; i++) {\n if (i == index) {\n return "+e+"[i];\n }\n }\n "}function mn(t){if(t<=1)return"int";if(2===t)return"ivec2";if(3===t)return"ivec3";if(4===t)return"ivec4";if(5===t)return"ivec5";if(6===t)return"ivec6";throw Error("GPU for rank "+t+" is not yet supported")}function vn(t,e){var n=JSON.parse(JSON.stringify(t));return n.shapeInfo.logicalShape=e,n}function _n(t,e){return e.map(function(e){return t[e]}).join(", ")}var gn=function(t,e,n,r){this.variableNames=["A"],this.usesPackedTextures=!0,b(t.length>2,function(){return"Packed arg"+(n.charAt(0).toUpperCase()+n.slice(1))+" supports only inputs with rank above 2."});var i=t[t.length-1],a=Math.ceil(i/e);this.outputShape=t.slice(0,-1),a>1&&this.outputShape.push(a),r||this.variableNames.push("bestIndicesA");var o,s,c=this.outputShape,u=c.length,l=mn(u),d=Ze("coords",u);if(1===a){var f=mn(s=u+1);o="\n "+f+" sourceLocR = "+f+"("+d.join()+", 0);\n ++"+d[u-1]+";\n "+f+" sourceLocG = "+f+"("+d.join()+", 0);\n ++"+d[u-2]+";\n "+f+" sourceLocA = "+f+"("+d.join()+", 0);\n --"+d[u-1]+";\n "+f+" sourceLocB = "+f+"("+d.join()+", 0);\n --"+d[u-2]+";"}else s=u,o="\n "+l+" sourceLocR = coords;\n ++"+d[u-1]+";\n "+l+" sourceLocG = coords;\n ++"+d[u-2]+";\n "+l+" sourceLocA = coords;\n --"+d[u-1]+";\n "+l+" sourceLocB = coords;\n --"+d[u-2]+";";var h=["x","y","z","w","u","v"].slice(0,s),p="."+h[s-1],m=h.map(function(t){return"int "+t}),v=Ze("sourceLocR",s-1).concat("inIdx.r"),_=Ze("sourceLocG",s-1).concat("inIdx.g"),g=Ze("sourceLocB",s-1).concat("inIdx.b"),y=Ze("sourceLocA",s-1).concat("inIdx.a"),x="max"===n?"greaterThan":"lessThan",w=r?"":"\n inIdx = round(vec4(getBestIndicesAChannel("+v.join()+"),\n getBestIndicesAChannel("+_.join()+"),\n getBestIndicesAChannel("+g.join()+"),\n getBestIndicesAChannel("+y.join()+")));",k="vec4(\n getAChannel("+v.join()+"),\n hasNextCol ? getAChannel("+_.join()+") : 0.,\n hasNextRow ? getAChannel("+g.join()+") : 0.,\n hasNextRow && hasNextCol ? getAChannel("+y.join()+") : 0.)",C=r?"":"\n float getBestIndicesAChannel("+m.join()+") {\n return getChannel(getBestIndicesA("+h.join()+"),\n vec2("+h.slice(-2).join()+"));\n }";this.userCode="\n float getAChannel("+m.join()+") {\n return getChannel(getA("+h.join()+"),\n vec2("+h.slice(-2).join()+"));\n }\n "+C+"\n void main() {\n "+l+" coords = getOutputCoords();\n bool hasNextCol = "+d[u-1]+" < "+(c[u-1]-1)+";\n bool hasNextRow = "+d[u-2]+" < "+(c[u-2]-1)+";\n "+o+"\n ivec4 srcIdx = ivec4(sourceLocR"+p+", sourceLocG"+p+",\n sourceLocB"+p+", sourceLocA"+p+") * "+e+";\n ivec4 inIdx = srcIdx;\n vec4 bestIndex = vec4(inIdx);\n vec4 bestValue = "+k+";\n\n for (int i = 0; i < "+e+"; i++) {\n inIdx = srcIdx;\n "+w+"\n vec4 candidate = "+k+";\n bvec4 nan = isnan(candidate);\n bvec4 replace = bvec4(\n vec4("+x+"(candidate, bestValue)) * (vec4(1.0) - vec4(nan)));\n\n bestValue = vec4(replace.x ? candidate.x : bestValue.x,\n replace.y ? candidate.y : bestValue.y,\n replace.z ? candidate.z : bestValue.z,\n replace.w ? candidate.w : bestValue.w);\n bestIndex = mix(bestIndex, vec4(inIdx), vec4(replace));\n srcIdx++;\n }\n setOutput(bestIndex);\n }\n "},bn=function(t){this.variableNames=["dy"],this.outputShape=t.inShape;var e=t.filterHeight,n=t.filterWidth,r=t.strideHeight,i=t.strideWidth,a=t.dilationHeight,o=t.dilationWidth,s=t.effectiveFilterHeight,c=t.effectiveFilterWidth,u=s-1-t.padInfo.top,l=c-1-t.padInfo.left,d=1/(e*n);this.userCode="\n const ivec2 pads = ivec2("+u+", "+l+");\n const float avgMultiplier = float("+d+");\n\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int d = coords[3];\n\n ivec2 dyRCCorner = coords.yz - pads;\n int dyRCorner = dyRCCorner.x;\n int dyCCorner = dyRCCorner.y;\n\n // Convolve dy(?, ?, d) with pos mask(:, :, d) to get dx(xR, xC, d).\n // ? = to be determined. : = across all values in that axis.\n float dotProd = 0.0;\n for (int wR = 0; wR < "+s+";\n wR += "+a+") {\n float dyR = float(dyRCorner + wR) / "+r+".0;\n\n if (dyR < 0.0 || dyR >= "+t.outHeight+".0 || fract(dyR) > 0.0) {\n continue;\n }\n int idyR = int(dyR);\n\n for (int wC = 0; wC < "+c+";\n wC+= "+o+") {\n float dyC = float(dyCCorner + wC) / "+i+".0;\n\n if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n fract(dyC) > 0.0) {\n continue;\n }\n int idyC = int(dyC);\n\n float dyValue = getDy(b, idyR, idyC, d);\n\n dotProd += dyValue * avgMultiplier;\n }\n }\n setOutput(dotProd);\n }\n "},yn=function(t,e,n,r,i,a){this.outputShape=[],this.variableNames=["x","mean","variance"],en(t,e),en(t,n);var o="0.0";null!=r&&(en(t,r),this.variableNames.push("offset"),o="getOffsetAtOutCoords()");var s="1.0";null!=i&&(en(t,i),this.variableNames.push("scale"),s="getScaleAtOutCoords()"),this.outputShape=t,this.userCode="\n void main() {\n float x = getXAtOutCoords();\n float mean = getMeanAtOutCoords();\n float variance = getVarianceAtOutCoords();\n float offset = "+o+";\n float scale = "+s+";\n float inv = scale * inversesqrt(variance + float("+a+"));\n setOutput(dot(vec3(x, -mean, offset), vec3(inv, inv, 1)));\n }\n "},xn=function(t,e,n,r,i,a){this.usesPackedTextures=!0,this.variableNames=["x","mean","variance"],en(t,e),en(t,n);var o="vec4(0.0)";null!=r&&(en(t,r),this.variableNames.push("offset"),o="getOffsetAtOutCoords()");var s="vec4(1.0)";null!=i&&(en(t,i),this.variableNames.push("scale"),s="getScaleAtOutCoords()"),this.outputShape=t,this.userCode="\n void main() {\n vec4 offset = "+o+";\n vec4 scale = "+s+";\n\n vec4 x = getXAtOutCoords();\n vec4 mean = getMeanAtOutCoords();\n vec4 variance = getVarianceAtOutCoords();\n\n vec4 inv = scale * inversesqrt(variance + vec4("+a+"));\n\n setOutput((x - mean) * inv + offset);\n }\n "},wn="return areal * breal - aimag * bimag;",kn="return areal * bimag + aimag * breal;",Cn=function(t,e,n){this.variableNames=["AReal","AImag","BReal","BImag"],this.outputShape=en(e,n),this.userCode="\n float binaryOpComplex(\n float areal, float aimag, float breal, float bimag) {\n "+t+"\n }\n\n void main() {\n float areal = getARealAtOutCoords();\n float aimag = getAImagAtOutCoords();\n float breal = getBRealAtOutCoords();\n float bimag = getBImagAtOutCoords();\n setOutput(binaryOpComplex(areal, aimag, breal, bimag));\n }\n "},En="return a + b;",Sn="return a - b;",In="return a * b;",Mn=function(t,e,n){this.variableNames=["A","B"],this.outputShape=en(e,n),this.userCode="\n float binaryOperation(float a, float b) {\n "+t+"\n }\n\n void main() {\n float a = getAAtOutCoords();\n float b = getBAtOutCoords();\n setOutput(binaryOperation(a, b));\n }\n "},Tn=function(t,e,n){this.variableNames=["A","B"],this.supportsBroadcasting=!0,this.usesPackedTextures=!0,this.outputShape=en(e,n),this.userCode="\n vec4 binaryOperation(vec4 a, vec4 b) {\n "+t+"\n }\n\n void main() {\n vec4 a = getAAtOutCoords();\n vec4 b = getBAtOutCoords();\n setOutput(binaryOperation(a, b));\n }\n "},Dn=function(){function t(t){this.variableNames=["A"],this.outputShape=t,this.userCode="\n uniform float min;\n uniform float max;\n\n void main() {\n float value = getAAtOutCoords();\n if (isnan(value)) {\n setOutput(value);\n return;\n }\n\n setOutput(clamp(value, min, max));\n }\n "}return t.prototype.getCustomSetupFunc=function(t,e){var n=this;return function(r,i){null==n.minLoc&&(n.minLoc=r.getUniformLocationNoThrow(i,"min"),n.maxLoc=r.getUniformLocationNoThrow(i,"max")),r.gl.uniform1f(n.minLoc,t),r.gl.uniform1f(n.maxLoc,e)}},t}(),Rn=function(){function t(t){this.variableNames=["A"],this.usesPackedTextures=!0,this.outputShape=t,this.userCode="\n uniform float min;\n uniform float max;\n\n void main() {\n vec4 value = getAAtOutCoords();\n\n if (any(isnan(value))) {\n setOutput(value);\n return;\n }\n\n setOutput(clamp(value, vec4(min), vec4(max)));\n }\n "}return t.prototype.getCustomSetupFunc=function(t,e){var n=this;return function(r,i){null==n.minLoc&&(n.minLoc=r.getUniformLocationNoThrow(i,"min"),n.maxLoc=r.getUniformLocationNoThrow(i,"max")),r.gl.uniform1f(n.minLoc,t),r.gl.uniform1f(n.maxLoc,e)}},t}(),Pn=function(t){this.variableNames=["real","imag"],this.outputShape=t,this.userCode="\n void main() {\n float re = abs(getRealAtOutCoords());\n float im = abs(getImagAtOutCoords());\n float mx = max(re, im);\n\n // sadly the length function in glsl is not underflow-safe\n // (at least not on Intel GPUs). So the safe solution is\n // to ensure underflow-safety in all cases.\n setOutput(\n mx == 0.0 ? 0.0 : mx * length(vec2(1, min(re, im)/mx))\n );\n }\n "},On=function(t){this.outputShape=[],this.outputShape=le(t,1),this.variableNames=t.map(function(t,e){return"T"+e});var e=new Array(t.length-1);e[0]=t[0][1];for(var n=1;n<e.length;n++)e[n]=e[n-1]+t[n][1];var r=["if (yC < "+e[0]+") setOutput(getT0(yR, yC));"];for(n=1;n<e.length;n++){var i=e[n-1];r.push("else if (yC < "+e[n]+") setOutput(getT"+n+"(yR, yC-"+i+"));")}var a=e.length,o=e[e.length-1];r.push("else setOutput(getT"+a+"(yR, yC-"+o+"));"),this.userCode="\n void main() {\n ivec2 coords = getOutputCoords();\n int yR = coords.x;\n int yC = coords.y;\n\n "+r.join("\n ")+"\n }\n "},Ln=function(t,e){this.usesPackedTextures=!0,this.outputShape=[],this.outputShape=le(t,e);var n=this.outputShape,r=n.length,i=mn(r),a=Ze("coords",r),o=["x","y","z","w","u","v"].slice(0,r);this.variableNames=t.map(function(t,e){return"T"+e});var s=new Array(t.length-1);s[0]=t[0][e];for(var c=1;c<s.length;c++)s[c]=s[c-1]+t[c][e];var u=o[e],l="vec2("+o.slice(-2).join()+")",d=o.join(),f="if ("+u+" < "+s[0]+")\n return getChannel(getT0("+d+"), "+l+");";for(c=1;c<s.length;c++){var h=s[c-1];f+="\n else if ("+u+" < "+s[c]+") {\n "+u+" -= "+h+";\n return getChannel(getT"+c+"("+d+"), "+l+");\n }"}var p=s.length;f+="\n else {\n "+u+" -= "+s[s.length-1]+";\n return getChannel(getT"+p+"("+d+"), "+l+");\n }",this.userCode="\n float getValue("+o.map(function(t){return"int "+t})+") {\n "+f+"\n }\n\n void main() {\n "+i+" coords = getOutputCoords();\n vec4 result = vec4(getValue("+a+"), 0., 0., 0.);\n if (++"+a[r-1]+" < "+n[r-1]+") {\n result.g = getValue("+a+");\n }\n if (++"+a[r-2]+" < "+n[r-2]+") {\n result.a = getValue("+a+");\n }\n if ("+a[r-2]+" < "+n[r-2]+" &&\n --"+a[r-1]+" < "+n[r-1]+") {\n result.b = getValue("+a+");\n }\n setOutput(result);\n }\n "},An=function(t){this.variableNames=["x","dy"],this.outputShape=t.filterShape;var e=t.strideHeight,n=t.strideWidth,r=t.padInfo.top,i=t.padInfo.left;this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int wR = coords.x;\n int wC = coords.y;\n int d1 = coords.z;\n int d2 = coords.w;\n\n // Convolve x(?, ?, d1) with dy(:, :, d2) to get dw(wR, wC, d1, d2).\n // ? = to be determined. : = across all values in that axis.\n float dotProd = 0.0;\n\n for (int b = 0; b < "+t.batchSize+"; b++) {\n for (int yR = 0; yR < "+t.outHeight+"; yR++) {\n int xR = wR + yR * "+e+" - "+r+";\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int yC = 0; yC < "+t.outWidth+"; yC++) {\n int xC = wC + yC * "+n+" - "+i+";\n\n if (xC < 0 || xC >= "+t.inWidth+") {\n continue;\n }\n\n float dyValue = getDy(b, yR, yC, d2);\n float xValue = getX(b, xR, xC, d1);\n dotProd += (xValue * dyValue);\n }\n }\n }\n setOutput(dotProd);\n }\n "},Nn=function(t){this.variableNames=["dy","W"],this.outputShape=t.inShape;var e=t.filterHeight,n=t.filterWidth,r=t.strideHeight,i=t.strideWidth,a=e-1-t.padInfo.top,o=n-1-t.padInfo.left;this.userCode="\n const ivec2 pads = ivec2("+a+", "+o+");\n\n void main() {\n ivec4 coords = getOutputCoords();\n int batch = coords[0];\n int d1 = coords[3];\n\n ivec2 dyCorner = coords.yz - pads;\n int dyRCorner = dyCorner.x;\n int dyCCorner = dyCorner.y;\n\n // Convolve dy(?, ?, d2) with w(:, :, d1, d2) to compute dx(xR, xC, d1).\n // ? = to be determined. : = across all values in that axis.\n float dotProd = 0.0;\n for (int wR = 0; wR < "+e+"; wR++) {\n float dyR = float(dyRCorner + wR) / "+r+".0;\n\n if (dyR < 0.0 || dyR >= "+t.outHeight+".0 || fract(dyR) > 0.0) {\n continue;\n }\n int idyR = int(dyR);\n\n int wRPerm = "+e+" - 1 - wR;\n\n for (int wC = 0; wC < "+n+"; wC++) {\n float dyC = float(dyCCorner + wC) / "+i+".0;\n\n if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n fract(dyC) > 0.0) {\n continue;\n }\n int idyC = int(dyC);\n\n int wCPerm = "+n+" - 1 - wC;\n\n for (int d2 = 0; d2 < "+t.outChannels+"; d2++) {\n float xValue = getDy(batch, idyR, idyC, d2);\n float wValue = getW(wRPerm, wCPerm, d1, d2);\n dotProd += xValue * wValue;\n }\n }\n }\n setOutput(dotProd);\n }\n "},Bn=function(t){this.variableNames=["x","dy"],this.outputShape=t.filterShape;var e=t.strideDepth,n=t.strideHeight,r=t.strideWidth,i=t.padInfo.front,a=t.padInfo.top,o=t.padInfo.left;this.userCode="\n void main() {\n ivec5 coords = getOutputCoords();\n int wF = coords.x;\n int wR = coords.y;\n int wC = coords.z;\n int d1 = coords.w;\n int d2 = coords.u;\n\n float dotProd = 0.0;\n\n for (int b = 0; b < "+t.batchSize+"; b++) {\n for (int yF = 0; yF < "+t.outDepth+"; yF++) {\n int xF = wF + yF * "+e+" - "+i+";\n\n if (xF < 0 || xF >= "+t.inDepth+") {\n continue;\n }\n\n for (int yR = 0; yR < "+t.outHeight+"; yR++) {\n int xR = wR + yR * "+n+" - "+a+";\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int yC = 0; yC < "+t.outWidth+"; yC++) {\n int xC = wC + yC * "+r+" - "+o+";\n\n if (xC < 0 || xC >= "+t.inWidth+") {\n continue;\n }\n\n float dyValue = getDy(b, yF, yR, yC, d2);\n float xValue = getX(b, xF, xR, xC, d1);\n dotProd += (xValue * dyValue);\n }\n }\n }\n }\n setOutput(dotProd);\n }\n "},jn=function(t){this.variableNames=["dy","W"],this.outputShape=t.inShape;var e=t.filterDepth,n=t.filterHeight,r=t.filterWidth,i=t.strideDepth,a=t.strideHeight,o=t.strideWidth,s=e-1-t.padInfo.front,c=n-1-t.padInfo.top,u=r-1-t.padInfo.left;this.userCode="\n const ivec3 pads = ivec3("+s+", "+c+", "+u+");\n\n void main() {\n ivec5 coords = getOutputCoords();\n int batch = coords.x;\n int d1 = coords.u;\n\n\n ivec3 dyCorner = ivec3(coords.y, coords.z, coords.w) - pads;\n int dyFCorner = dyCorner.x;\n int dyRCorner = dyCorner.y;\n int dyCCorner = dyCorner.z;\n\n float dotProd = 0.0;\n for (int wF = 0; wF < "+e+"; wF++) {\n float dyF = float(dyFCorner + wF) / "+i+".0;\n\n if (dyF < 0.0 || dyF >= "+t.outDepth+".0 || fract(dyF) > 0.0) {\n continue;\n }\n int idyF = int(dyF);\n\n int wFPerm = "+e+" - 1 - wF;\n\n for (int wR = 0; wR < "+n+"; wR++) {\n float dyR = float(dyRCorner + wR) / "+a+".0;\n\n if (dyR < 0.0 || dyR >= "+t.outHeight+".0 ||\n fract(dyR) > 0.0) {\n continue;\n }\n int idyR = int(dyR);\n\n int wRPerm = "+n+" - 1 - wR;\n\n for (int wC = 0; wC < "+r+"; wC++) {\n float dyC = float(dyCCorner + wC) / "+o+".0;\n\n if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n fract(dyC) > 0.0) {\n continue;\n }\n int idyC = int(dyC);\n\n int wCPerm = "+r+" - 1 - wC;\n\n for (int d2 = 0; d2 < "+t.outChannels+"; d2++) {\n float xValue = getDy(batch, idyF, idyR, idyC, d2);\n float wValue = getW(wFPerm, wRPerm, wCPerm, d1, d2);\n dotProd += xValue * wValue;\n }\n }\n }\n }\n setOutput(dotProd);\n }\n "},Fn=function(t){this.variableNames=["x","dy"],this.outputShape=t.filterShape;var e=t.strideHeight,n=t.strideWidth,r=t.padInfo.top,i=t.padInfo.left,a=t.outChannels/t.inChannels;this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int wR = coords.x;\n int wC = coords.y;\n int d1 = coords.z;\n int dm = coords.w;\n int d2 = d1 * "+a+" + dm;\n\n float dotProd = 0.0;\n\n // TODO: Vec4 over the batch size\n for (int b = 0; b < "+t.batchSize+"; b++) {\n for (int yR = 0; yR < "+t.outHeight+"; yR++) {\n int xR = wR + yR * "+e+" - "+r+";\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int yC = 0; yC < "+t.outWidth+"; yC++) {\n int xC = wC + yC * "+n+" - "+i+";\n\n if (xC < 0 || xC >= "+t.inWidth+") {\n continue;\n }\n\n float dyValue = getDy(b, yR, yC, d2);\n float xValue = getX(b, xR, xC, d1);\n dotProd += (xValue * dyValue);\n }\n }\n }\n setOutput(dotProd);\n }\n "},Yn=function(t){this.variableNames=["dy","W"],this.outputShape=t.inShape;var e=t.filterHeight,n=t.filterWidth,r=t.strideHeight,i=t.strideWidth,a=e-1-t.padInfo.top,o=n-1-t.padInfo.left,s=t.outChannels/t.inChannels;this.userCode="\n const ivec2 pads = ivec2("+a+", "+o+");\n\n void main() {\n ivec4 coords = getOutputCoords();\n int batch = coords[0];\n int d1 = coords[3];\n ivec2 dyCorner = coords.yz - pads;\n int dyRCorner = dyCorner.x;\n int dyCCorner = dyCorner.y;\n\n float dotProd = 0.0;\n\n for (int wR = 0; wR < "+e+"; wR++) {\n float dyR = float(dyRCorner + wR) / "+r+".0;\n\n if (dyR < 0.0 || dyR >= "+t.outHeight+".0 || fract(dyR) > 0.0) {\n continue;\n }\n int idyR = int(dyR);\n\n int wRPerm = "+e+" - 1 - wR;\n\n for (int wC = 0; wC < "+n+"; wC++) {\n float dyC = float(dyCCorner + wC) / "+i+".0;\n\n if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n fract(dyC) > 0.0) {\n continue;\n }\n int idyC = int(dyC);\n\n int wCPerm = "+n+" - 1 - wC;\n\n // TODO: Vec4 over the channelMul\n for (int dm = 0; dm < "+s+"; dm++) {\n int d2 = d1 * "+s+" + dm;\n float xValue = getDy(batch, idyR, idyC, d2);\n float wValue = getW(wRPerm, wCPerm, d1, dm);\n dotProd += xValue * wValue;\n }\n }\n }\n setOutput(dotProd);\n }\n "},$n=function(t){this.variableNames=["x","W"],this.outputShape=t.outShape;var e=t.padInfo.top,n=t.padInfo.left,r=t.strideHeight,i=t.strideWidth,a=t.dilationHeight,o=t.dilationWidth,s=t.filterHeight,c=t.filterWidth,u=4*Math.floor(t.inChannels/4),l=t.inChannels%4;this.userCode="\n const ivec2 strides = ivec2("+r+", "+i+");\n const ivec2 pads = ivec2("+e+", "+n+");\n\n void main() {\n ivec4 coords = getOutputCoords();\n int batch = coords[0];\n int d2 = coords[3];\n\n ivec2 xRCCorner = coords.yz * strides - pads;\n int xRCorner = xRCCorner.x;\n int xCCorner = xRCCorner.y;\n\n // Convolve x(?, ?, d1) with w(:, :, d1, d2) to get y(yR, yC, d2).\n // ? = to be determined. : = across all values in that axis.\n float dotProd = 0.0;\n for (int wR = 0; wR < "+s+"; wR++) {\n int xR = xRCorner + wR * "+a+";\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int wC = 0; wC < "+c+"; wC++) {\n int xC = xCCorner + wC * "+o+";\n\n if (xC < 0 || xC >= "+t.inWidth+") {\n continue;\n }\n\n for (int d1 = 0; d1 < "+u+"; d1 += 4) {\n vec4 xValues = vec4(\n getX(batch, xR, xC, d1),\n getX(batch, xR, xC, d1 + 1),\n getX(batch, xR, xC, d1 + 2),\n getX(batch, xR, xC, d1 + 3)\n );\n vec4 wValues = vec4(\n getW(wR, wC, d1, d2),\n getW(wR, wC, d1 + 1, d2),\n getW(wR, wC, d1 + 2, d2),\n getW(wR, wC, d1 + 3, d2)\n );\n\n dotProd += dot(xValues, wValues);\n }\n\n if ("+(1===l)+") {\n dotProd +=\n getX(batch, xR, xC, "+u+") *\n getW(wR, wC, "+u+", d2);\n } else if ("+(2===l)+") {\n vec2 xValues = vec2(\n getX(batch, xR, xC, "+u+"),\n getX(batch, xR, xC, "+u+" + 1)\n );\n vec2 wValues = vec2(\n getW(wR, wC, "+u+", d2),\n getW(wR, wC, "+u+" + 1, d2)\n );\n dotProd += dot(xValues, wValues);\n } else if ("+(3===l)+") {\n vec3 xValues = vec3(\n getX(batch, xR, xC, "+u+"),\n getX(batch, xR, xC, "+u+" + 1),\n getX(batch, xR, xC, "+u+" + 2)\n );\n vec3 wValues = vec3(\n getW(wR, wC, "+u+", d2),\n getW(wR, wC, "+u+" + 1, d2),\n getW(wR, wC, "+u+" + 2, d2)\n );\n dotProd += dot(xValues, wValues);\n }\n }\n }\n setOutput(dotProd);\n }\n "},zn=function(t){this.variableNames=["x","W"],this.outputShape=t.outShape;var e=t.padInfo.front,n=t.padInfo.top,r=t.padInfo.left,i=t.strideDepth,a=t.strideHeight,o=t.strideWidth,s=t.dilationDepth,c=t.dilationHeight,u=t.dilationWidth,l=t.filterDepth,d=t.filterHeight,f=t.filterWidth,h=4*Math.floor(t.inChannels/4),p=t.inChannels%4;this.userCode="\n const ivec3 strides = ivec3("+i+", "+a+", "+o+");\n const ivec3 pads = ivec3("+e+", "+n+", "+r+");\n\n void main() {\n ivec5 coords = getOutputCoords();\n int batch = coords.x;\n int d2 = coords.u;\n\n ivec3 xFRCCorner = ivec3(coords.y, coords.z, coords.w) * strides - pads;\n int xFCorner = xFRCCorner.x;\n int xRCorner = xFRCCorner.y;\n int xCCorner = xFRCCorner.z;\n\n // Convolve x(?, ?, ?, d1) with w(:, :, :, d1, d2) to get\n // y(yF, yR, yC, d2). ? = to be determined. : = across all\n // values in that axis.\n float dotProd = 0.0;\n for (int wF = 0; wF < "+l+"; wF++) {\n int xF = xFCorner + wF * "+s+";\n\n if (xF < 0 || xF >= "+t.inDepth+") {\n continue;\n }\n\n for (int wR = 0; wR < "+d+"; wR++) {\n int xR = xRCorner + wR * "+c+";\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int wC = 0; wC < "+f+"; wC++) {\n int xC = xCCorner + wC * "+u+";\n\n if (xC < 0 || xC >= "+t.inWidth+") {\n continue;\n }\n\n for (int d1 = 0; d1 < "+h+"; d1 += 4) {\n vec4 xValues = vec4(\n getX(batch, xF, xR, xC, d1),\n getX(batch, xF, xR, xC, d1 + 1),\n getX(batch, xF, xR, xC, d1 + 2),\n getX(batch, xF, xR, xC, d1 + 3)\n );\n vec4 wValues = vec4(\n getW(wF, wR, wC, d1, d2),\n getW(wF, wR, wC, d1 + 1, d2),\n getW(wF, wR, wC, d1 + 2, d2),\n getW(wF, wR, wC, d1 + 3, d2)\n );\n\n dotProd += dot(xValues, wValues);\n }\n\n if ("+(1===p)+") {\n dotProd +=\n getX(batch, xF, xR, xC, "+h+") *\n getW(wF, wR, wC, "+h+", d2);\n } else if ("+(2===p)+") {\n vec2 xValues = vec2(\n getX(batch, xF, xR, xC, "+h+"),\n getX(batch, xF, xR, xC, "+h+" + 1)\n );\n vec2 wValues = vec2(\n getW(wF, wR, wC, "+h+", d2),\n getW(wF, wR, wC, "+h+" + 1, d2)\n );\n dotProd += dot(xValues, wValues);\n } else if ("+(3===p)+") {\n vec3 xValues = vec3(\n getX(batch, xF, xR, xC, "+h+"),\n getX(batch, xF, xR, xC, "+h+" + 1),\n getX(batch, xF, xR, xC, "+h+" + 2)\n );\n vec3 wValues = vec3(\n getW(wF, wR, wC, "+h+", d2),\n getW(wF, wR, wC, "+h+" + 1, d2),\n getW(wF, wR, wC, "+h+" + 2, d2)\n );\n dotProd += dot(xValues, wValues);\n }\n }\n }\n }\n setOutput(dotProd);\n }\n "},Vn=function(t){this.variableNames=["x","W"],this.outputShape=t.outShape;var e=t.inHeight,n=t.inWidth,r=t.padInfo.top,i=t.padInfo.left,a=t.strideHeight,o=t.strideWidth,s=t.dilationHeight,c=t.dilationWidth,u=t.filterHeight,l=t.filterWidth,d=t.outChannels/t.inChannels;this.userCode="\n const ivec2 strides = ivec2("+a+", "+o+");\n const ivec2 pads = ivec2("+r+", "+i+");\n\n void main() {\n ivec4 coords = getOutputCoords();\n int batch = coords.x;\n ivec2 xRCCorner = coords.yz * strides - pads;\n int d2 = coords.w;\n int d1 = d2 / "+d+";\n int q = d2 - d1 * "+d+";\n\n int xRCorner = xRCCorner.x;\n int xCCorner = xRCCorner.y;\n\n // Convolve x(?, ?, d1) with w(:, :, d1, q) to get y(yR, yC, d2).\n // ? = to be determined. : = across all values in that axis.\n float dotProd = 0.0;\n // TODO(dsmilkov): Flatten the two for loops and vec4 the operations.\n for (int wR = 0; wR < "+u+"; wR++) {\n int xR = xRCorner + wR * "+s+";\n\n if (xR < 0 || xR >= "+e+") {\n continue;\n }\n\n for (int wC = 0; wC < "+l+"; wC++) {\n int xC = xCCorner + wC * "+c+";\n\n if (xC < 0 || xC >= "+n+") {\n continue;\n }\n\n float xVal = getX(batch, xR, xC, d1);\n float wVal = getW(wR, wC, d1, q);\n dotProd += xVal * wVal;\n }\n }\n setOutput(dotProd);\n }\n "},Hn=function(t){this.variableNames=["x","W"],this.usesPackedTextures=!0,this.outputShape=t.outShape;for(var e=t.inHeight,n=t.inWidth,r=t.padInfo.top,i=t.padInfo.left,a=t.strideHeight,o=t.strideWidth,s=t.dilationHeight,c=t.dilationWidth,u=t.filterHeight,l=t.filterWidth,d=l,f="int xR; int xC; int xCOffset;",h=0;h<u;h++)for(var p=0;p<l;p++)f+="\n vec4 xTexelR"+h+"C"+2*p+" = vec4(0.);\n vec4 wR"+h+"C"+p+" = vec4(0.);\n vec4 xR"+h+"C"+p+" = vec4(0.);";for(h=0;h<u;h++)for(var m=0;m<d;m++){if(f+="\n xR = xRCorner + "+h*s+";\n xC = xCCorner + "+(p=2*m)*c+";\n ",1===o){if(p<l&&(f+=i%2==1?"\n xCOffset = xC + 1;\n if(xR >= 0 && xR < "+e+" && xCOffset >= 0 && xCOffset < "+n+") {\n xTexelR"+h+"C"+p+" = getX(batch, xR, xCOffset, d1);\n } else {\n xTexelR"+h+"C"+p+" = vec4(0.);\n }\n\n xCOffset = xC + 1 - 2;\n if(xR >= 0 && xR < "+e+" && xCOffset >= 0 && xCOffset < "+n+") {\n vec4 previous = getX(batch, xR, xCOffset, d1);\n xR"+h+"C"+p+" = vec4(previous.zw, xTexelR"+h+"C"+p+".xy);\n } else {\n xR"+h+"C"+p+" = vec4(0, 0, xTexelR"+h+"C"+p+".xy);\n }\n ":"\n if(xR >= 0 && xR < "+e+" && xC >= 0 && xC < "+n+") {\n xTexelR"+h+"C"+p+" = getX(batch, xR, xC, d1);\n } else {\n xTexelR"+h+"C"+p+" = vec4(0.);\n }\n\n xR"+h+"C"+p+" = xTexelR"+h+"C"+p+";\n ",p+1<l)){var _=i%2==0?v(c):c;c%2==0&&i%2==1||c%2!=0&&i%2!=1?(f+="\n xCOffset = xC + "+i%2+" + "+_+";\n\n if(xR >= 0 && xR < "+e+" &&\n xCOffset >= 0 && xCOffset < "+n+") {\n xTexelR"+h+"C"+(p+2)+" = getX(batch, xR, xCOffset, d1);\n }\n ",c>1&&(f+="\n xCOffset -= 2;\n if(xR >= 0 && xR < "+e+" &&\n xCOffset >= 0 && xCOffset < "+n+") {\n xTexelR"+h+"C"+p+" = getX(batch, xR, xCOffset, d1);\n } else {\n xTexelR"+h+"C"+p+" = vec4(0.);\n }\n "),f+="\n xR"+h+"C"+(p+1)+" = vec4(\n xTexelR"+h+"C"+p+".zw, xTexelR"+h+"C"+(p+2)+".xy);\n "):f+="\n xCOffset = xC + "+_+";\n\n if(xR >= 0 && xR < "+e+" &&\n xCOffset >= 0 && xCOffset < "+n+") {\n xTexelR"+h+"C"+(p+2)+" = getX(batch, xR, xCOffset, d1);\n }\n\n xR"+h+"C"+(p+1)+" = xTexelR"+h+"C"+(p+2)+";\n "}}else p<l&&(f+="\n if(xR >= 0 && xR < "+e+") {\n ",i%2==1?(f+="\n xCOffset = xC + 1 - "+o+";\n if(xCOffset >= 0 && xCOffset < "+n+") {\n xTexelR"+h+"C"+p+" = getX(batch, xR, xCOffset, d1);\n } else {\n xTexelR"+h+"C"+p+" = vec4(0.);\n }\n\n if(xC + 1 >= 0 && xC + 1 < "+n+") {\n xTexelR"+h+"C"+(p+2)+" = getX(batch, xR, xC + 1, d1);\n } else {\n xTexelR"+h+"C"+(p+2)+" = vec4(0.);\n }\n\n xR"+h+"C"+p+" = vec4(\n xTexelR"+h+"C"+p+".zw, xTexelR"+h+"C"+(p+2)+".zw);\n ",p+1<l&&(f+="\n vec4 final = vec4(0.);\n xCOffset = xC + 1 + "+o+";\n if(xCOffset >= 0 && xCOffset < "+n+") {\n final = getX(batch, xR, xCOffset, d1);\n }\n xR"+h+"C"+(p+1)+" = vec4(xTexelR"+h+"C"+(p+2)+".xy, final.xy);\n ")):(f+="\n if(xC >= 0 && xC < "+n+") {\n xTexelR"+h+"C"+p+" = getX(batch, xR, xC, d1);\n } else {\n xTexelR"+h+"C"+p+" = vec4(0.);\n }\n\n xCOffset = xC + "+o+";\n if(xCOffset >= 0 && xCOffset < "+n+") {\n xTexelR"+h+"C"+(p+2)+" = getX(batch, xR, xCOffset, d1);\n } else {\n xTexelR"+h+"C"+(p+2)+" = vec4(0.);\n }\n\n xR"+h+"C"+p+" = vec4(\n xTexelR"+h+"C"+p+".xy, xTexelR"+h+"C"+(p+2)+".xy);\n ",p+1<l&&(f+="\n xR"+h+"C"+(p+1)+" = vec4(\n xTexelR"+h+"C"+p+".zw, xTexelR"+h+"C"+(p+2)+".zw);\n ")),f+="}");p<l&&(f+="\n vec4 wTexelR"+h+"C"+p+" = getW("+h+", "+p+", d1, q);\n wR"+h+"C"+p+" = vec4(wTexelR"+h+"C"+p+".xz, wTexelR"+h+"C"+p+".xz);\n ",p+1<l&&(f+="\n vec4 wTexelR"+h+"C"+(p+1)+" = getW("+h+", "+(p+1)+", d1, q);\n wR"+h+"C"+(p+1)+" =\n vec4(wTexelR"+h+"C"+(p+1)+".xz, wTexelR"+h+"C"+(p+1)+".xz);"))}for(h=0;h<u;h++)for(p=0;p<l;p++)f+="result += xR"+h+"C"+p+" * wR"+h+"C"+p+";";this.userCode="\n const ivec2 strides = ivec2("+a+", "+o+");\n const ivec2 pads = ivec2("+r+", "+i+");\n\n void main() {\n\n ivec4 coords = getOutputCoords();\n int batch = coords.x;\n ivec2 xRCCorner = coords.yz * strides - pads;\n int d2 = coords.w;\n int d1 = d2;\n int q = 0;\n int xRCorner = xRCCorner.x;\n int xCCorner = xRCCorner.y;\n\n vec4 result = vec4(0.);\n\n "+f+"\n\n setOutput(result);\n }\n "},qn=function(t,e,n,r,i){this.variableNames=["Image","Boxes","BoxInd"],this.outputShape=[];var a=t[0],o=t[1],s=t[2],c=t[3],u=e[0],l=n[0],d=n[1];this.outputShape=[u,l,d,c];var f="bilinear"===r?1:0,h=[o-1+".0",s-1+".0"],p=h[0],m=h[1],v=l>1?[""+(o-1)/(l-1),"(y2-y1) * height_ratio","y1*"+p+" + float(y)*(height_scale)"]:["0.0","0.0","0.5 * (y1+y2) * "+p],_=v[0],g=v[1],b=v[2],y=d>1?[""+(s-1)/(d-1),"(x2-x1) * width_ratio","x1*"+m+" + float(x)*(width_scale)"]:["0.0","0.0","0.5 * (x1+x2) * "+m],x=y[0],w=y[1],k=y[2];this.userCode="\n const float height_ratio = float("+_+");\n const float width_ratio = float("+x+");\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int y = coords[1];\n int x = coords[2];\n int d = coords[3];\n\n // get box vals\n float y1 = getBoxes(b,0);\n float x1 = getBoxes(b,1);\n float y2 = getBoxes(b,2);\n float x2 = getBoxes(b,3);\n\n // get image in batch index\n int bInd = round(getBoxInd(b));\n if(bInd < 0 || bInd >= "+a+") {\n return;\n }\n\n float height_scale = "+g+";\n float width_scale = "+w+";\n\n float in_y = "+b+";\n if( in_y < 0.0 || in_y > "+p+" ) {\n setOutput(float("+i+"));\n return;\n }\n float in_x = "+k+";\n if( in_x < 0.0 || in_x > "+m+" ) {\n setOutput(float("+i+"));\n return;\n }\n\n vec2 sourceFracIndexCR = vec2(in_x,in_y);\n if("+f+" == 1) {\n // Compute the four integer indices.\n ivec2 sourceFloorCR = ivec2(sourceFracIndexCR);\n ivec2 sourceCeilCR = ivec2(ceil(sourceFracIndexCR));\n\n float topLeft = getImage(b, sourceFloorCR.y, sourceFloorCR.x, d);\n float bottomLeft = getImage(b, sourceCeilCR.y, sourceFloorCR.x, d);\n float topRight = getImage(b, sourceFloorCR.y, sourceCeilCR.x, d);\n float bottomRight = getImage(b, sourceCeilCR.y, sourceCeilCR.x, d);\n\n vec2 fracCR = sourceFracIndexCR - vec2(sourceFloorCR);\n\n float top = topLeft + (topRight - topLeft) * fracCR.x;\n float bottom = bottomLeft + (bottomRight - bottomLeft) * fracCR.x;\n float newValue = top + (bottom - top) * fracCR.y;\n setOutput(newValue);\n } else {\n // Compute the coordinators of nearest neighbor point.\n ivec2 sourceNearestCR = ivec2(floor(\n sourceFracIndexCR + vec2(0.5,0.5)));\n float newValue = getImage(b, sourceNearestCR.y, sourceNearestCR.x, d);\n setOutput(newValue);\n }\n }\n "},Wn=function(t,e,n){this.variableNames=["x"],this.outputShape=t;var r=t.length,i=t[t.length-1],a=n?"<":">";this.userCode="\n int getIndex(int i) {\n "+(n?"return "+i+" -i - 1;":"return i;")+"\n }\n\n void main() {\n "+mn(r)+" coords = getOutputCoords();\n int end = "+Un(r,"coords")+";\n float val = 0.0;\n for (int i = "+i+" - 1; i >= 0; i -= 1) {\n int idx = getIndex(i);\n if (idx "+a+" end) {\n continue;\n }\n if (idx == end && "+e+") {\n continue;\n }\n "+Un(r,"coords")+" = idx;\n val += getX("+function(t,e){if(1===t)return""+e;if(2===t)return e+".x, "+e+".y";if(3===t)return e+".x, "+e+".y, "+e+".z";if(4===t)return e+".x, "+e+".y, "+e+".z, "+e+".w";throw Error("Cumulative sum for rank "+t+" is not yet supported")}(r,"coords")+");\n }\n setOutput(val);\n }\n "};function Un(t,e){if(1===t)return""+e;if(2===t)return e+".y";if(3===t)return e+".z";if(4===t)return e+".w";throw Error("Cumulative sum for rank "+t+" is not yet supported")}var Gn=function(){function t(t,e,n){this.variableNames=["x"],this.outputShape=[],this.outputShape=t,this.blockSize=e,this.dataFormat=n,this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int h = "+this.getHeightCoordString()+";\n int w = "+this.getWidthCoordString()+";\n int d = "+this.getDepthCoordString()+";\n\n int in_h = h / "+e+";\n int offset_h = imod(h, "+e+");\n int in_w = w / "+e+";\n int offset_w = imod(w, "+e+");\n int offset_d = (offset_h * "+e+" + offset_w) *\n "+this.getOutputDepthSize()+";\n int in_d = d + offset_d;\n\n float result = "+this.getInputSamplingString()+";\n setOutput(result);\n }\n "}return t.prototype.getHeightCoordString=function(){return"NHWC"===this.dataFormat?"coords[1]":"coords[2]"},t.prototype.getWidthCoordString=function(){return"NHWC"===this.dataFormat?"coords[2]":"coords[3]"},t.prototype.getDepthCoordString=function(){return"NHWC"===this.dataFormat?"coords[3]":"coords[1]"},t.prototype.getOutputDepthSize=function(){return"NHWC"===this.dataFormat?this.outputShape[3]:this.outputShape[1]},t.prototype.getInputSamplingString=function(){return"NHWC"===this.dataFormat?"getX(b, in_h, in_w, in_d)":"getX(b, in_d, in_h, in_w)"},t}(),Kn=function(t){this.variableNames=["A"];var e=nn();this.outputShape=t,this.userCode="\n const float FLOAT_MAX = 1.70141184e38;\n const float FLOAT_MIN = 1.17549435e-38;\n\n lowp vec4 encode_float(highp float v) {\n if (isnan(v)) {\n return vec4(255, 255, 255, 255);\n }\n\n highp float av = abs(v);\n\n if(av < FLOAT_MIN) {\n return vec4(0.0, 0.0, 0.0, 0.0);\n } else if(v > FLOAT_MAX) {\n return vec4(0.0, 0.0, 128.0, 127.0) / 255.0;\n } else if(v < -FLOAT_MAX) {\n return vec4(0.0, 0.0, 128.0, 255.0) / 255.0;\n }\n\n highp vec4 c = vec4(0,0,0,0);\n\n highp float e = floor(log2(av));\n highp float m = exp2(fract(log2(av))) - 1.0;\n\n c[2] = floor(128.0 * m);\n m -= c[2] / 128.0;\n c[1] = floor(32768.0 * m);\n m -= c[1] / 32768.0;\n c[0] = floor(8388608.0 * m);\n\n highp float ebias = e + 127.0;\n c[3] = floor(ebias / 2.0);\n ebias -= c[3] * 2.0;\n c[2] += floor(ebias) * 128.0;\n\n c[3] += 128.0 * step(0.0, -v);\n\n return c / 255.0;\n }\n\n void main() {\n float x = getAAtOutCoords();\n "+e.output+" = encode_float(x);\n }\n "},Xn="return real * expR - imag * expI;",Jn="return real * expI + imag * expR;",Zn=function(t,e,n){this.variableNames=["real","imag"];var r=e[1];this.outputShape=e;var i=n?"2.0 * "+Math.PI:"-2.0 * "+Math.PI,a=n?r+".0":"1.0";this.userCode="\n const float exponentMultiplier = "+i+";\n\n float unaryOpComplex(float real, float expR, float imag, float expI) {\n "+t+"\n }\n\n float mulMatDFT(int batch, int index) 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t.getExtension(n)},'Extension "'+n+'" not supported on this browser.')}function _r(t,e,n){var r=jr(t,e,function(){return t.createShader(t.VERTEX_SHADER)},"Unable to create vertex WebGLShader.");if(dr(t,e,function(){return t.shaderSource(r,n)}),dr(t,e,function(){return t.compileShader(r)}),!1===t.getShaderParameter(r,t.COMPILE_STATUS))throw console.log(t.getShaderInfoLog(r)),new Error("Failed to compile vertex shader.");return r}function gr(t,e,n){var r=jr(t,e,function(){return t.createShader(t.FRAGMENT_SHADER)},"Unable to create fragment WebGLShader.");if(dr(t,e,function(){return t.shaderSource(r,n)}),dr(t,e,function(){return t.compileShader(r)}),!1===t.getShaderParameter(r,t.COMPILE_STATUS))throw function(t,e){var n=br.exec(e);if(null==n)return console.log("Couldn't parse line number in error: "+e),void console.log(t);for(var r=+n[1],i=t.split("\n"),a=i.length.toString().length+2,o=i.map(function(t,e){return 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t.createBuffer()},"Unable to create WebGLBuffer");return dr(t,e,function(){return t.bindBuffer(t.ARRAY_BUFFER,r)}),dr(t,e,function(){return t.bufferData(t.ARRAY_BUFFER,n,t.STATIC_DRAW)}),r}function Cr(t,e,n){var r=jr(t,e,function(){return t.createBuffer()},"Unable to create WebGLBuffer");return dr(t,e,function(){return t.bindBuffer(t.ELEMENT_ARRAY_BUFFER,r)}),dr(t,e,function(){return t.bufferData(t.ELEMENT_ARRAY_BUFFER,n,t.STATIC_DRAW)}),r}function Er(){return 2===zt.get("WEBGL_VERSION")?1:4}function Sr(t,e){return jr(t,e,function(){return t.createTexture()},"Unable to create WebGLTexture.")}function Ir(t,e){var n=zt.get("WEBGL_MAX_TEXTURE_SIZE");if(t<=0||e<=0){var r="["+t+"x"+e+"]";throw new Error("Requested texture size "+r+" is invalid.")}if(t>n||e>n)throw r="["+t+"x"+e+"]",new Error("Requested texture size "+r+" greater than WebGL maximum on this browser / GPU ["+n+"x"+n+"].")}function Mr(t,e){return jr(t,e,function(){return t.createFramebuffer()},"Unable to create 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Jr(t,e,n,r,i){var a=ar(n,r);return Xr(t,e,a[0],a[1],i.internalFormatFloat,i.textureFormatFloat,t.FLOAT)}function Zr(t,e,n,r,i){var a=ar(n,r);return Xr(t,e,a[0],a[1],i.internalFormatHalfFloat,i.textureFormatFloat,i.textureTypeHalfFloat)}function Qr(t,e,n,r,i){var a=ar(n,r);return Xr(t,e,a[0],a[1],t.RGBA,t.RGBA,t.UNSIGNED_BYTE)}function ti(t,e,n,r,i){var a=cr(n,r);return Xr(t,e,a[0],a[1],i.internalFormatPackedFloat,t.RGBA,t.FLOAT)}function ei(t,e,n,r,i){var a=cr(n,r);return Xr(t,e,a[0],a[1],i.internalFormatPackedHalfFloat,t.RGBA,i.textureTypeHalfFloat)}function ni(t,e,n,r){return dr(t,e,function(){return t.bindBuffer(t.ARRAY_BUFFER,r)}),Tr(t,e,n,"clipSpacePos",r,3,20,0)&&Tr(t,e,n,"uv",r,2,20,12)}function ri(t,e,n,r){dr(t,e,function(){return t.bindTexture(t.TEXTURE_2D,n)}),dr(t,e,function(){return t.texImage2D(t.TEXTURE_2D,0,t.RGBA,t.RGBA,t.UNSIGNED_BYTE,r)}),dr(t,e,function(){return t.bindTexture(t.TEXTURE_2D,null)})}function ii(t,e,n,r,i,a,o){Ir(r,i),dr(t,e,function(){return t.bindTexture(t.TEXTURE_2D,n)}),dr(t,e,function(){return t.texSubImage2D(t.TEXTURE_2D,0,0,0,r,i,o,t.FLOAT,a)}),dr(t,e,function(){return t.bindTexture(t.TEXTURE_2D,null)})}function ai(t,e,n,r,i,a,o,s){var c,u=ar(r,i),l=u[0],d=u[1],f=r*i;1===s.defaultNumChannels&&f===a.length?c=a:function(t,e,n){var r=or(t.length,n);if(e.length<r)throw new Error("unpackedArray length ("+e.length+") must be >= "+r);for(var i=0,a=0;a<t.length;++a)e[i]=t[a],i+=n}(a,c=new Float32Array(f*o),o),ii(t,e,n,l,d,c,s.textureFormatFloat)}function oi(t,e,n,r,i,a,o,s,c,u){var l=cr(o,s),d=l[0],f=l[1],h=new Float32Array(ur(o,s));(function(t,e,n,r,i){for(var a=r%2==1,o=n%2==1,s=Math.floor(r/2),c=Math.floor(n/2),u=Math.ceil(r/2),l=u*Math.ceil(n/2),d=v(n)*v(r),f=0;f<e;f++){for(var h=f*n*r,p=f*d,m=a?4:0,_=r,g=p,b=0;b<c;++b){for(var y=2*b*r,x=0;x<s;++x){var w=h+y+2*x;i[g]=t[w],i[g+1]=t[w+1],i[g+2]=t[w+_],i[g+3]=t[w+_+1],g+=4}g+=m}if(a){w=h+r-1,g=p+4*(u-1);var k=2*r;for(m=4*u,b=0;b<c;++b)i[g]=t[w],i[g+2]=t[w+r],w+=k,g+=m}if(o){for(w=h+(n-1)*r,g=p+4*(l-u),x=0;x<s;++x)i[g++]=t[w++],i[g++]=t[w++],g+=2;a&&o&&(i[p+d-4]=t[w])}}})(c,r,i,a,h),ii(t,e,n,d,f,h,t.RGBA)}function si(t,e,n,r,i,a){var o=n;if(2===zt.get("WEBGL_VERSION")){var s=t,c=s.createBuffer();dr(t,e,function(){return t.bindBuffer(s.PIXEL_PACK_BUFFER,c)});var u=4*or(r*i,a.downloadUnpackNumChannels);dr(t,e,function(){return t.bufferData(s.PIXEL_PACK_BUFFER,u,s.STREAM_READ)}),dr(t,e,function(){return s.readPixels(0,0,i,r,t.RGBA,t.FLOAT,0)}),dr(t,e,function(){return t.bindBuffer(s.PIXEL_PACK_BUFFER,null)}),o=c}return o}function ci(t,e,n,r,i){var a=t,o=new Float32Array(or(n*r,i.downloadUnpackNumChannels));a.bindBuffer(a.PIXEL_PACK_BUFFER,e),a.getBufferSubData(a.PIXEL_PACK_BUFFER,0,o),a.bindBuffer(a.PIXEL_PACK_BUFFER,null);var s=new Float32Array(n*r);return sr(o,s,i.downloadUnpackNumChannels),s}function ui(t,e,n,r,i){var a=ar(n,r),o=a[0],s=a[1],c=new Float32Array(or(n*r,i.downloadUnpackNumChannels));dr(t,e,function(){return t.readPixels(0,0,o,s,i.downloadTextureFormat,t.FLOAT,c)});var u=new Float32Array(n*r);return sr(c,u,i.downloadUnpackNumChannels),u}function li(t,e,n,r,i){var a=ar(n,r),o=a[0],s=a[1],c=new Uint8Array(or(n*r,4));return dr(t,e,function(){return t.readPixels(0,0,o,s,i.downloadTextureFormat,t.UNSIGNED_BYTE,c)}),new Float32Array(c.buffer)}function di(t,e,n,r,i,a,o,s){var c=t,u=new Float32Array(ur(a,o));c.bindBuffer(c.PIXEL_PACK_BUFFER,e),c.getBufferSubData(c.PIXEL_PACK_BUFFER,0,u),c.bindBuffer(c.PIXEL_PACK_BUFFER,null);var l=new Float32Array(k([n,r,i]));return lr(u,n,r,i,l),l}function fi(t,e,n,r,i,a,o,s){var c=cr(a,o),u=c[0],l=c[1],d=new Float32Array(ur(a,o));dr(t,e,function(){return t.readPixels(0,0,u,l,t.RGBA,t.FLOAT,d)});var f=new Float32Array(k([n,r,i]));return lr(d,n,r,i,f)}var hi=Object.freeze({createVertexShader:Wr,createVertexBuffer:Ur,createIndexBuffer:Gr,getTextureConfig:Kr,createFloat32MatrixTexture:Jr,createFloat16MatrixTexture:Zr,createUnsignedBytesMatrixTexture:Qr,createPackedMatrixTexture:ti,createFloat16PackedMatrixTexture:ei,bindVertexProgramAttributeStreams:ni,uploadPixelDataToTexture:ri,uploadMatrixToTexture:ai,uploadMatrixToPackedTexture:oi,maybeCreateBufferFromOutputTexture:si,downloadFloat32MatrixFromBuffer:ci,downloadFloat32MatrixFromOutputTexture:ui,downloadByteEncodedFloatMatrixFromOutputTexture:li,downloadPackedMatrixFromBuffer:di,downloadMatrixFromPackedOutputTexture:fi}),pi=function(){function t(t){this.outputTexture=null,this.program=null,this.disposed=!1,this.vertexAttrsAreBound=!1,this.itemsToPoll=[];var e=zt.get("WEBGL_VERSION");null!=t?(this.gl=t,function(t,e){d[t]=e}(e,t)):this.gl=h(e),1===zt.get("WEBGL_VERSION")?(this.textureFloatExtension=vr(this.gl,this.debug,"OES_texture_float"),this.colorBufferFloatExtension=this.gl.getExtension("WEBGL_color_buffer_float"),zt.get("WEBGL_RENDER_FLOAT32_ENABLED")||(this.textureHalfFloatExtension=vr(this.gl,this.debug,"OES_texture_half_float"),this.colorBufferHalfFloatExtension=this.gl.getExtension("EXT_color_buffer_half_float"))):this.colorBufferFloatExtension=vr(this.gl,this.debug,"EXT_color_buffer_float"),this.vertexBuffer=Ur(this.gl,this.debug),this.indexBuffer=Gr(this.gl,this.debug),this.framebuffer=Mr(this.gl,this.debug),this.textureConfig=Kr(this.gl,this.textureHalfFloatExtension)}return Object.defineProperty(t.prototype,"debug",{get:function(){return zt.get("DEBUG")},enumerable:!0,configurable:!0}),t.prototype.dispose=function(){var t=this;if(!this.disposed){null!=this.program&&console.warn("Disposing a GPGPUContext that still has a bound 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This is probably a resource leak, delete the output matrix texture with GPGPUContext.deleteMatrixTexture before disposing.");var e=this.gl;dr(e,this.debug,function(){return e.finish()}),dr(e,this.debug,function(){return e.bindFramebuffer(e.FRAMEBUFFER,null)}),dr(e,this.debug,function(){return e.deleteFramebuffer(t.framebuffer)}),dr(e,this.debug,function(){return e.bindBuffer(e.ARRAY_BUFFER,null)}),dr(e,this.debug,function(){return e.bindBuffer(e.ELEMENT_ARRAY_BUFFER,null)}),dr(e,this.debug,function(){return e.deleteBuffer(t.indexBuffer)}),this.disposed=!0}},t.prototype.createFloat32MatrixTexture=function(t,e){return this.throwIfDisposed(),Jr(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.createFloat16MatrixTexture=function(t,e){return this.throwIfDisposed(),Zr(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.createUnsignedBytesMatrixTexture=function(t,e){return this.throwIfDisposed(),Qr(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.uploadPixelDataToTexture=function(t,e){this.throwIfDisposed(),ri(this.gl,this.debug,t,e)},t.prototype.createFloat16PackedMatrixTexture=function(t,e){return this.throwIfDisposed(),ei(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.createPackedMatrixTexture=function(t,e){return this.throwIfDisposed(),ti(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.deleteMatrixTexture=function(t){var e=this;this.throwIfDisposed(),this.outputTexture===t&&(Ar(this.gl,this.debug,this.framebuffer),this.outputTexture=null),dr(this.gl,this.debug,function(){return e.gl.deleteTexture(t)})},t.prototype.uploadMatrixToTexture=function(t,e,n,r){this.throwIfDisposed();var i=Er();return ai(this.gl,this.debug,t,e,n,r,i,this.textureConfig)},t.prototype.uploadMatrixToPackedTexture=function(t,e,n,r,i,a,o){return this.throwIfDisposed(),oi(this.gl,this.debug,t,e,n,r,i,a,o,this.textureConfig)},t.prototype.downloadFloat32MatrixFromOutputTexture=function(t,e,n){var r=this;return this.downloadMatrixDriver(t,function(){return ui(r.gl,r.debug,e,n,r.textureConfig)})},t.prototype.downloadByteEncodedFloatMatrixFromOutputTexture=function(t,e,n){var r=this;return this.downloadMatrixDriver(t,function(){return li(r.gl,r.debug,e,n,r.textureConfig)})},t.prototype.downloadPackedMatrixFromBuffer=function(t,e,n,r,i,a){return di(this.gl,t,e,n,r,i,a,this.textureConfig)},t.prototype.downloadFloat32MatrixFromBuffer=function(t,e,n){return ci(this.gl,t,e,n,this.textureConfig)},t.prototype.maybeCreateBufferFromTexture=function(t,e,n){this.bindTextureToFrameBuffer(t);var r=si(this.gl,this.debug,t,e,n,this.textureConfig);return this.unbindTextureToFrameBuffer(),r},t.prototype.createAndWaitForFence=function(){var t=this.createFence(this.gl);return this.pollFence(t)},t.prototype.createFence=function(t){var e,n,r=this;if(zt.get("WEBGL_FENCE_API_ENABLED")){var i=t,a=i.fenceSync(i.SYNC_GPU_COMMANDS_COMPLETE,0);t.flush(),n=function(){var t=i.clientWaitSync(a,0,0);return t===i.ALREADY_SIGNALED||t===i.CONDITION_SATISFIED},e=a}else zt.get("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")>0?(e=this.beginQuery(),this.endQuery(),n=function(){return r.isQueryAvailable(e,zt.get("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION"))}):n=function(){return!0};return{query:e,isFencePassed:n}},t.prototype.downloadMatrixFromPackedTexture=function(t,e,n,r,i,a){var o=this;return this.downloadMatrixDriver(t,function(){return fi(o.gl,o.debug,e,n,r,i,a,o.textureConfig)})},t.prototype.createProgram=function(t){this.throwIfDisposed();var e=this.gl,n=gr(e,this.debug,t),r=Wr(e,this.debug),i=yr(e,this.debug);return dr(e,this.debug,function(){return e.attachShader(i,r)}),dr(e,this.debug,function(){return e.attachShader(i,n)}),xr(e,this.debug,i),this.debug&&wr(e,this.debug,i),this.vertexAttrsAreBound||(this.setProgram(i),this.vertexAttrsAreBound=ni(e,this.debug,this.program,this.vertexBuffer)),i},t.prototype.deleteProgram=function(t){var e=this;this.throwIfDisposed(),t===this.program&&(this.program=null),null!=t&&dr(this.gl,this.debug,function(){return e.gl.deleteProgram(t)})},t.prototype.setProgram=function(t){var e=this;this.throwIfDisposed(),this.program=t,null!=this.program&&this.debug&&wr(this.gl,this.debug,this.program),dr(this.gl,this.debug,function(){return e.gl.useProgram(t)})},t.prototype.getUniformLocation=function(t,e,n){return void 0===n&&(n=!0),this.throwIfDisposed(),n?Rr(this.gl,this.debug,t,e):Pr(this.gl,t,e)},t.prototype.getAttributeLocation=function(t,e){var n=this;return this.throwIfDisposed(),dr(this.gl,this.debug,function(){return n.gl.getAttribLocation(t,e)})},t.prototype.getUniformLocationNoThrow=function(t,e){return this.throwIfDisposed(),this.gl.getUniformLocation(t,e)},t.prototype.setInputMatrixTexture=function(t,e,n){this.throwIfDisposed(),this.throwIfNoProgram(),Or(this.gl,this.debug,this.program,t,e,n)},t.prototype.setOutputMatrixTexture=function(t,e,n){this.setOutputMatrixTextureDriver(t,n,e)},t.prototype.setOutputPackedMatrixTexture=function(t,e,n){this.throwIfDisposed();var r=cr(e,n),i=r[0],a=r[1];this.setOutputMatrixTextureDriver(t,i,a)},t.prototype.setOutputMatrixWriteRegion=function(t,e,n,r){this.setOutputMatrixWriteRegionDriver(n,t,r,e)},t.prototype.setOutputPackedMatrixWriteRegion=function(t,e,n,r){throw new Error("setOutputPackedMatrixWriteRegion not implemented.")},t.prototype.debugValidate=function(){null!=this.program&&wr(this.gl,this.debug,this.program),Nr(this.gl)},t.prototype.executeProgram=function(){this.throwIfDisposed(),this.throwIfNoProgram();var t=this.gl;this.debug&&this.debugValidate(),dr(t,this.debug,function(){return t.drawElements(t.TRIANGLES,6,t.UNSIGNED_SHORT,0)})},t.prototype.blockUntilAllProgramsCompleted=function(){var t=this;this.throwIfDisposed(),dr(this.gl,this.debug,function(){return t.gl.finish()})},t.prototype.getQueryTimerExtension=function(){return null==this.disjointQueryTimerExtension&&(this.disjointQueryTimerExtension=vr(this.gl,this.debug,2===zt.get("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")?"EXT_disjoint_timer_query_webgl2":"EXT_disjoint_timer_query")),this.disjointQueryTimerExtension},t.prototype.getQueryTimerExtensionWebGL2=function(){return this.getQueryTimerExtension()},t.prototype.getQueryTimerExtensionWebGL1=function(){return this.getQueryTimerExtension()},t.prototype.beginQuery=function(){if(2===zt.get("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")){var t=this.gl,e=this.getQueryTimerExtensionWebGL2(),n=t.createQuery();return t.beginQuery(e.TIME_ELAPSED_EXT,n),n}var r=this.getQueryTimerExtensionWebGL1(),i=r.createQueryEXT();return r.beginQueryEXT(r.TIME_ELAPSED_EXT,i),i},t.prototype.endQuery=function(){if(2!==zt.get("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")){var t=this.getQueryTimerExtensionWebGL1();t.endQueryEXT(t.TIME_ELAPSED_EXT)}else{var e=this.gl,n=this.getQueryTimerExtensionWebGL2();e.endQuery(n.TIME_ELAPSED_EXT)}},t.prototype.waitForQueryAndGetTime=function(t){return u(this,void 0,void 0,function(){var e=this;return l(this,function(n){switch(n.label){case 0:return[4,T(function(){return e.disposed||e.isQueryAvailable(t,zt.get("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION"))})];case 1:return n.sent(),[2,this.getQueryTime(t,zt.get("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION"))]}})})},t.prototype.getQueryTime=function(t,e){if(0===e)return null;if(2===e){var n=this.gl;return n.getQueryParameter(t,n.QUERY_RESULT)/1e6}var r=this.getQueryTimerExtensionWebGL1();return r.getQueryObjectEXT(t,r.QUERY_RESULT_EXT)/1e6},t.prototype.isQueryAvailable=function(t,e){if(0===e)return!0;if(2===e){var n=this.gl,r=this.getQueryTimerExtensionWebGL2(),i=n.getQueryParameter(t,n.QUERY_RESULT_AVAILABLE);return null==this.disjoint&&(this.disjoint=this.gl.getParameter(r.GPU_DISJOINT_EXT)),i&&!this.disjoint}return i=(r=this.getQueryTimerExtensionWebGL1()).getQueryObjectEXT(t,r.QUERY_RESULT_AVAILABLE_EXT),null==this.disjoint&&(this.disjoint=this.gl.getParameter(r.GPU_DISJOINT_EXT)),i&&!this.disjoint},t.prototype.pollFence=function(t){var e=this;return new Promise(function(n){e.addItemToPoll(function(){return t.isFencePassed()},function(){return n()})})},t.prototype.pollItems=function(){for(var t=function(t){for(var e=0;e<t.length&&t[e]();++e);return e-1}(this.itemsToPoll.map(function(t){return t.isDoneFn})),e=0;e<=t;++e)(0,this.itemsToPoll[e].resolveFn)();this.itemsToPoll=this.itemsToPoll.slice(t+1)},t.prototype.addItemToPoll=function(t,e){var n=this;this.itemsToPoll.push({isDoneFn:t,resolveFn:e}),this.itemsToPoll.length>1||T(function(){return n.pollItems(),0===n.itemsToPoll.length})},t.prototype.bindTextureToFrameBuffer=function(t){this.throwIfDisposed(),Lr(this.gl,this.debug,t,this.framebuffer),this.debug&&Nr(this.gl)},t.prototype.unbindTextureToFrameBuffer=function(){null!=this.outputTexture?(Lr(this.gl,this.debug,this.outputTexture,this.framebuffer),this.debug&&Nr(this.gl)):Ar(this.gl,this.debug,this.framebuffer)},t.prototype.downloadMatrixDriver=function(t,e){this.bindTextureToFrameBuffer(t);var n=e();return this.unbindTextureToFrameBuffer(),n},t.prototype.setOutputMatrixTextureDriver=function(t,e,n){this.throwIfDisposed();var r=this.gl;Lr(r,this.debug,t,this.framebuffer),this.debug&&Nr(r),this.outputTexture=t,dr(r,this.debug,function(){return r.viewport(0,0,e,n)}),dr(r,this.debug,function(){return r.scissor(0,0,e,n)})},t.prototype.setOutputMatrixWriteRegionDriver=function(t,e,n,r){var i=this;this.throwIfDisposed(),dr(this.gl,this.debug,function(){return i.gl.scissor(t,e,n,r)})},t.prototype.throwIfDisposed=function(){if(this.disposed)throw new Error("Attempted to use disposed GPGPUContext.")},t.prototype.throwIfNoProgram=function(){if(null==this.program)throw new Error("No GPU program is currently set.")},t}();function mi(t,e){if(t.length!==e.length)throw Error("Binary was compiled with "+t.length+" inputs, but was executed with "+e.length+" inputs");t.forEach(function(t,n){var r=t.logicalShape,i=e[n],a=i.shape;if(!C(r,a))throw Error("Binary was compiled with different shapes than the current args. Shapes "+r+" and "+a+" must match");if(!t.isUniform||!i.isUniform){var o=t.texShape,s=i.isUniform?null:i.texData.texShape;if(!C(o,s))throw Error("Binary was compiled with different texture shapes than the current args. Shape "+o+" and "+s+" must match")}})}var vi=function(t,e,n){this.variableNames=["A"],this.usesPackedTextures=!0,this.outputShape=t;var r=n.filterWidth,i=n.inChannels,a=n.strideWidth,o=n.strideHeight,s=n.padInfo,c=n.outWidth,u=n.dilationWidth,l=n.dilationHeight,d=s.left,f=s.top,h=i*r,p=nn();this.userCode="\n void main() {\n ivec2 rc = getOutputCoords();\n\n vec4 result = vec4(0);\n\n for(int row=0; row<=1; row++) {\n for(int col=0; col<=1; col++) {\n int blockIndex = rc.y + col;\n int pos = rc.x + row;\n\n if(blockIndex >= "+t[1]+" || pos >= "+t[0]+") continue;\n\n int offsetY = int(blockIndex / ("+c+")) * "+o+" - "+f+";\n int d0 = offsetY + "+l+" * (pos / "+h+");\n\n if(d0 >= "+e[0]+" || d0 < 0) continue;\n\n int offsetX = int(mod(float(blockIndex), "+c+".) * "+a+". - "+d+".);\n int d1 = offsetX + "+u+" * (int(mod(float(pos), "+h+".) / "+i+".));\n\n if(d1 >= "+e[1]+" || d1 < 0) continue;\n\n vec2 innerDims = vec2(d1, int(mod(float(pos), "+i+".)));\n result[row * 2 + col] = getChannel(getA(d0, int(innerDims.x),\n int(innerDims.y)), innerDims);\n }\n }\n\n "+p.output+" = result;\n }\n "},_i=function(t,e,n,r,i){this.variableNames=["x"],this.outputShape=[];var a,o=e,s=t[3]-1;this.outputShape=t;var c="float("+n+") + float("+r+") * sum";a=.5===i?"inversesqrt("+c+")":1===i?"1.0/("+c+")":"exp(log("+c+") * float(-"+i+"));",this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int r = coords[1];\n int c = coords[2];\n int d = coords[3];\n float x = getX(b, r, c, d);\n float sum = 0.0;\n for (int j = -"+o+"; j <= "+o+"; j++) {\n int idx = d + j;\n if (idx >= 0 && idx <= "+s+") {\n float z = getX(b, r, c, idx);\n sum += z * z;\n }\n }\n float val = x * "+a+";\n setOutput(val);\n }\n "},gi=function(t,e,n,r,i){this.variableNames=["inputImage","outputImage","dy"],this.outputShape=[],this.outputShape=t,this.depth=t[3],this.depthRadius=e,this.bias=n,this.alpha=r,this.beta=i,this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int r = coords[1];\n int c = coords[2];\n\n float result = 0.0;\n for (int d = 0; d < "+this.depth+"; ++d) {\n int depthBegin = int(max(0.0, float(d - "+e+")));\n int depthEnd = int(min(float("+this.depth+"),\n float(d + "+e+" + 1)));\n\n const int MIN_DEPTH_BEGIN = 0;\n const int MAX_DEPTH_END = "+this.depth+";\n\n float norm = 0.0;\n for (int k = MIN_DEPTH_BEGIN; k < MAX_DEPTH_END; ++k) {\n if (k < depthBegin){\n continue;\n }\n else if (k >= depthBegin && k < depthEnd) {\n norm += getInputImage(b, r, c, k) * getInputImage(b, r, c, k);\n }\n else {\n break;\n }\n }\n\n norm = float("+r+") * norm + float("+n+");\n\n for(int k = MIN_DEPTH_BEGIN; k < MAX_DEPTH_END; ++k){\n if (k < depthBegin){\n continue;\n }\n else if (k >= depthBegin && k < depthEnd){\n float dyi = -2.0 * float("+r+")\n * float("+i+")\n * getInputImage(b ,r ,c, k) * getOutputImage(b, r, c, d)\n / norm;\n if (k == d) {\n dyi += pow(norm, -1.0 * "+i+");\n }\n if (k == coords[3]) {\n dyi *= getDy(b, r, c, d);\n result += dyi;\n }\n }\n else {\n break;\n }\n }\n }\n setOutput(result);\n }\n "},bi=function(t){this.variableNames=["dy","maxPos"],this.outputShape=t.inShape;var e=t.strideHeight,n=t.strideWidth,r=t.dilationHeight,i=t.effectiveFilterHeight,a=t.effectiveFilterWidth,o=i-1-t.padInfo.top,s=a-1-t.padInfo.left,c=i*a-1;this.userCode="\n const ivec2 pads = ivec2("+o+", "+s+");\n\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int d = coords[3];\n\n ivec2 dyRCCorner = coords.yz - pads;\n int dyRCorner = dyRCCorner.x;\n int dyCCorner = dyRCCorner.y;\n\n // Convolve dy(?, ?, d) with pos mask(:, :, d) to get dx(xR, xC, d).\n // ? = to be determined. : = across all values in that axis.\n float dotProd = 0.0;\n for (int wR = 0; wR < "+i+";\n wR += "+r+") {\n float dyR = float(dyRCorner + wR) / "+e+".0;\n\n if (dyR < 0.0 || dyR >= "+t.outHeight+".0 || fract(dyR) > 0.0) {\n continue;\n }\n int idyR = int(dyR);\n\n for (int wC = 0; wC < "+a+"; wC++) {\n float dyC = float(dyCCorner + wC) / "+n+".0;\n\n if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n fract(dyC) > 0.0) {\n continue;\n }\n int idyC = int(dyC);\n\n float dyValue = getDy(b, idyR, idyC, d);\n int maxPosValue = "+c+" - int(getMaxPos(b, idyR, idyC, d));\n\n // Get the current value, check it against the value from the\n // position matrix.\n int curPosValue = wR * "+a+" + wC;\n float mask = float(maxPosValue == curPosValue ? 1.0 : 0.0);\n\n dotProd += dyValue * mask;\n }\n }\n setOutput(dotProd);\n }\n "},yi=function(t,e,n,r,i,a){void 0===n&&(n=!1),void 0===r&&(r=!1),void 0===i&&(i=!1),void 0===a&&(a=null),this.variableNames=["matrixA","matrixB"],this.usesPackedTextures=!0,this.outputShape=e;var o=n?t[1]:t[2],s=Math.ceil(o/2),c=n?"i * 2, rc.y":"rc.y, i * 2",u=r?"rc.z, i * 2":"i * 2, rc.z",l=n?["a.xxyy","a.zzww"]:["a.xxzz","a.yyww"],d=r?["b.xzxz","b.ywyw"]:["b.xyxy","b.zwzw"],f="",h="";a&&(f="vec4 activation(vec4 x) {\n "+a+"\n }",h="result = activation(result);");var p=i?"result += getBiasAtOutCoords();":"";i&&this.variableNames.push("bias"),this.userCode="\n "+f+"\n\n const float sharedDimension = "+s+".0;\n\n vec4 dot2x2ARowBCol(ivec3 rc) {\n vec4 result = vec4(0);\n for (int i = 0; i < "+s+"; i++) {\n vec4 a = getMatrixA(rc.x, "+c+");\n vec4 b = getMatrixB(rc.x, "+u+");\n\n result += ("+l[0]+" * "+d[0]+") + ("+l[1]+" * "+d[1]+");\n }\n return result;\n }\n\n void main() {\n ivec3 rc = getOutputCoords();\n vec4 result = dot2x2ARowBCol(rc);\n\n "+p+"\n\n "+h+"\n\n setOutput(result);\n }\n "},xi=function(){function t(t,e,n){this.variableNames=["probs"],this.outputShape=[t,n],this.userCode="\n uniform float seed;\n\n void main() {\n ivec2 coords = getOutputCoords();\n int batch = coords[0];\n\n float r = random(seed);\n float cdf = 0.0;\n\n for (int i = 0; i < "+(e-1)+"; i++) {\n cdf += getProbs(batch, i);\n\n if (r < cdf) {\n setOutput(float(i));\n return;\n }\n }\n\n // If no other event happened, last event happened.\n setOutput(float("+(e-1)+"));\n }\n "}return t.prototype.getCustomSetupFunc=function(t){var e=this;return function(n,r){null==e.seedLoc&&(e.seedLoc=n.getUniformLocation(r,"seed")),n.gl.uniform1f(e.seedLoc,t)}},t}(),wi=function(t,e,n,r){this.variableNames=["indices"],this.outputShape=[t,e],this.userCode="\n void main() {\n ivec2 coords = getOutputCoords();\n int index = round(getIndices(coords.x));\n setOutput(mix(float("+r+"), float("+n+"),\n float(index == coords.y)));\n }\n "},ki=function(t){this.variableNames=["A"],this.isPackShader=!0,this.outputShape=t;var e=t.length;if(0===e)this.userCode="\n void main() {\n setOutput(vec4(getA(), 0., 0., 0.));\n }\n ";else{var n=Ze("rc",e),r=mn(e),i=function(t,e,n){if(1===t)return"rc > "+e[0];for(var r="",i=t-2;i<t;i++)r+=n[i]+" >= "+e[i],i<t-1&&(r+="||");return r}(e,t,n),a=function(t,e,n,r){if(1===t)return"";var i=r.slice(-2);return"\n int r = "+i[0]+";\n int c = "+i[1]+";\n int rp1 = r + 1;\n int cp1 = c + 1;\n\n bool cEdge = cp1 >= "+e+";\n bool rEdge = rp1 >= "+n+";\n "}(e,t[t.length-1],t[t.length-2],n),o=function(t,e){var n=t.length,r=function(t,e){for(var n=[],r=0;r<=1;r++)for(var i=0;i<=1;i++){for(var a=(0===r?"r":"rp1")+", "+(0===i?"c":"cp1"),o=2;o<t;o++)a=e[e.length-1-o]+","+a;n.push(a)}return n}(n,e);return 1===n?"getA(rc),\n rc + 1 >= "+t[0]+" ? 0. : getA(rc + 1),\n 0, 0":"getA("+r[0]+"),\n cEdge ? 0. : getA("+r[1]+"),\n rEdge ? 0. : getA("+r[2]+"),\n rEdge || cEdge ? 0. : getA("+r[3]+")"}(t,n);this.userCode="\n void main() {\n "+r+" rc = getOutputCoords();\n\n if("+i+") {\n setOutput(vec4(0));\n } else {\n "+a+"\n\n setOutput(vec4("+o+"));\n }\n }\n "}};var Ci=function(t,e,n){this.variableNames=["x"],this.outputShape=e.map(function(e,n){return e[0]+t[n]+e[1]});var r=t.length,i=mn(r),a=e.map(function(t){return t[0]}).join(","),o=e.map(function(e,n){return e[0]+t[n]}).join(","),s=["coords[0]","coords[1]","coords[2]","coords[3]"].slice(0,r);this.userCode=1!==r?"\n "+i+" start = "+i+"("+a+");\n "+i+" end = "+i+"("+o+");\n\n void main() {\n "+i+" outC = getOutputCoords();\n if (any(lessThan(outC, start)) || any(greaterThanEqual(outC, end))) {\n setOutput(float("+n+"));\n } else {\n "+i+" coords = outC - start;\n setOutput(getX("+s+"));\n }\n }\n ":"\n int start = "+a+";\n int end = "+o+";\n\n void main() {\n int outC = getOutputCoords();\n if (outC < start || outC >= end) {\n setOutput(float("+n+"));\n } else {\n setOutput(getX(outC - start));\n }\n }\n "},Ei=function(t,e,n){this.variableNames=["x"],this.usesPackedTextures=!0,this.outputShape=e.map(function(e,n){return e[0]+t[n]+e[1]});for(var r=t.length,i=mn(r),a=e.map(function(t){return t[0]}).join(","),o=e.map(function(e,n){return e[0]+t[n]}).join(","),s=Ze("rc",r),c=Ze("source",r),u=s[r-1]+" < "+this.outputShape[r-1],l=1===r?"source":"vec2("+c.slice(-2).join()+")",d=[i+" rc = outputLoc;",s[r-1]+" += 1;\n if("+u+") {\n ",1===r?"":"}\n rc = outputLoc;\n "+s[r-2]+" += 1;\n if("+s[r-2]+" < "+this.outputShape[r-2]+") {",1===r?"":" "+s[r-1]+" += 1;\n if("+u+") {"],f=1===r?"rc < start || rc >= end":"any(lessThan(rc, start)) || any(greaterThanEqual(rc, end))",h="",p=0,m=1===r?2:4;p<m;p++)h+="\n "+d[p]+"\n if ("+f+") {\n result["+p+"] = float("+n+");\n } else {\n "+i+" source = rc - start;\n result["+p+"] = getChannel(getX("+c.join()+"), "+l+");\n }\n ";h+=1===r?"} ":"}}",this.userCode="\n const "+i+" start = "+i+"("+a+");\n const "+i+" end = "+i+"("+o+");\n\n void main() {\n "+i+" outputLoc = getOutputCoords();\n vec4 result = vec4(0.);\n "+h+"\n setOutput(result);\n }\n "},Si=function(t,e,n){if(this.variableNames=["x"],"avg"===e&&n)throw new Error("Cannot compute positions for average pool.");var r=t.filterWidth,i=t.strideHeight,a=t.strideWidth,o=t.dilationHeight,s=t.dilationWidth,c=t.effectiveFilterHeight,u=t.effectiveFilterWidth,l=t.padInfo.top,d=t.padInfo.left;this.outputShape=t.outShape;var f="avg"===e,h="0.0";if(f||(h="-1.0 / 1e-20"),n)this.userCode="\n const ivec2 strides = ivec2("+i+", "+a+");\n const ivec2 pads = ivec2("+l+", "+d+");\n\n void main() {\n ivec4 coords = getOutputCoords();\n int batch = coords[0];\n int d = coords[3];\n\n ivec2 xRCCorner = coords.yz * strides - pads;\n int xRCorner = xRCCorner.x;\n int xCCorner = xRCCorner.y;\n\n // max/min x(?, ?, d) to get y(yR, yC, d).\n // ? = to be determined\n float minMaxValue = 0.0;\n float minMaxValueFound = 0.0;\n int minMaxPosition = 0;\n float avgValue = 0.0;\n\n for (int wR = 0; wR < "+c+";\n wR += "+o+") {\n int xR = xRCorner + wR;\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int wC = 0; wC < "+u+";\n wC += "+s+") {\n int xC = xCCorner + wC;\n\n if (xC < 0 || xC >= "+t.inWidth+") {\n continue;\n }\n\n float value = getX(batch, xR, xC, d);\n\n // If a min / max value has already been found, use it. If not,\n // use the current value.\n float currMinMaxValue = mix(\n value, minMaxValue, minMaxValueFound);\n if (value >= currMinMaxValue) {\n minMaxValue = value;\n minMaxValueFound = 1.0;\n minMaxPosition = wR * "+u+" + wC;\n }\n }\n }\n setOutput(float(minMaxPosition));\n }\n ";else{var p=e+"("+e+"("+e+"(minMaxValue[0], minMaxValue[1]), minMaxValue[2]), minMaxValue[3])";"avg"===e&&(p="avgValue / count");var m=4*Math.floor(r/4),v=r%4,_="\n if ("+f+") {\n avgValue += dot(values, ones);\n } else {\n minMaxValue = max(values, minMaxValue);\n }\n ";this.userCode="\n const ivec2 strides = ivec2("+i+", "+a+");\n const ivec2 pads = ivec2("+l+", "+d+");\n const float initializationValue = "+h+";\n const vec4 ones = vec4(1.0, 1.0, 1.0, 1.0);\n\n float count = 0.0;\n\n float getValue(int batch, int xR, int xC, int d) {\n if (xC < 0 || xC >= "+t.inWidth+") {\n return initializationValue;\n }\n count += 1.0;\n return getX(batch, xR, xC, d);\n }\n\n void main() {\n ivec4 coords = getOutputCoords();\n int batch = coords[0];\n int d = coords[3];\n\n ivec2 xRCCorner = coords.yz * strides - pads;\n int xRCorner = xRCCorner.x;\n int xCCorner = xRCCorner.y;\n\n // max/min x(?, ?, d) to get y(yR, yC, d).\n // ? = to be determined\n vec4 minMaxValue = vec4("+h+");\n float avgValue = 0.0;\n count = 0.0;\n\n for (int wR = 0; wR < "+c+";\n wR += "+o+") {\n int xR = xRCorner + wR;\n\n if (xR < 0 || xR >= "+t.inHeight+") {\n continue;\n }\n\n for (int wC = 0; wC < "+m+"; wC += 4) {\n int xC = xCCorner + wC * "+s+";\n\n vec4 values = vec4(\n getValue(batch, xR, xC, d),\n getValue(batch, xR, xC + "+s+", d),\n getValue(batch, xR, xC + 2 * "+s+", d),\n getValue(batch, xR, xC + 3 * "+s+", d)\n );\n\n "+_+"\n }\n\n int xC = xCCorner + "+m+";\n if ("+(1===v)+") {\n vec4 values = vec4(\n getValue(batch, xR, xC, d),\n initializationValue,\n initializationValue,\n initializationValue\n );\n\n "+_+"\n } else if ("+(2===v)+") {\n vec4 values = vec4(\n getValue(batch, xR, xC, d),\n getValue(batch, xR, xC + "+s+", d),\n initializationValue,\n initializationValue\n );\n\n "+_+"\n } else if ("+(3===v)+") {\n vec4 values = vec4(\n getValue(batch, xR, xC, d),\n getValue(batch, xR, xC + "+s+", d),\n getValue(batch, xR, xC + 2 * "+s+", d),\n initializationValue\n );\n\n "+_+"\n }\n }\n setOutput("+p+");\n }\n "}},Ii=function(t,e){this.variableNames=["x"];var n=t.windowSize,r=t.batchSize,i=t.inSize,a=Math.ceil(i/n);this.outputShape=[r,a];var o="0.0",s="";"prod"===e?o="1.0":"min"===e?(o="1.0 / 1e-20",s="min"):"max"===e&&(o="-1.0 / 1e-20",s="max");var c=e+"("+e+"("+e+"(minMaxValue[0], minMaxValue[1]), minMaxValue[2]), minMaxValue[3])";"sum"===e?c="sumValue":"prod"===e?c="prodValue":"all"===e?c="allValue":"any"===e&&(c="anyValue");var u=4*Math.floor(n/4),l=n%4,d="\n if ("+("sum"===e)+") {\n sumValue += dot(values, ones);\n } else if ("+("prod"===e)+") {\n vec2 tmp = vec2(values[0], values[1]) * vec2(values[2], values[3]);\n prodValue *= tmp[0] * tmp[1];\n } else {\n minMaxValue = "+s+"(values, minMaxValue);\n }\n ",f="vec4";"all"===e?(o="1.0",d="\n bool reducedAllValue = all(values);\n float floatedReducedAllValue = float(reducedAllValue);\n allValue = float(allValue >= 1.0 && floatedReducedAllValue >= 1.0);\n ",f="bvec4"):"any"===e&&(o="0.0",d="\n bool reducedAnyValue = any(values);\n float floatedReducedAnyValue = float(reducedAnyValue);\n anyValue = float(anyValue >= 1.0 || floatedReducedAnyValue >= 1.0);\n ",f="bvec4");var h="";i%n>0&&(h="\n if (inIdx < 0 || inIdx >= "+i+") {\n return initializationValue;\n }\n "),this.userCode="\n const float initializationValue = "+o+";\n const vec4 ones = vec4(1.0, 1.0, 1.0, 1.0);\n\n float getValue(int batch, int inIdx) {\n "+h+"\n return getX(batch, inIdx);\n }\n\n void main() {\n ivec2 coords = getOutputCoords();\n int batch = coords[0];\n int outIdx = coords[1];\n int inOffset = outIdx * "+n+";\n\n vec4 minMaxValue = vec4("+o+");\n float prodValue = 1.0;\n float sumValue = 0.0;\n float allValue = 1.0;\n float anyValue = 0.0;\n\n for (int i = 0; i < "+u+"; i += 4) {\n int inIdx = inOffset + i;\n "+f+" values = "+f+"(\n getValue(batch, inIdx),\n getValue(batch, inIdx + 1),\n getValue(batch, inIdx + 2),\n getValue(batch, inIdx + 3)\n );\n\n "+d+"\n }\n\n int inIdx = inOffset + "+u+";\n if ("+(1===l)+") {\n "+f+" values = "+f+"(\n getValue(batch, inIdx),\n initializationValue,\n initializationValue,\n initializationValue\n );\n\n "+d+"\n } else if ("+(2===l)+") {\n "+f+" values = "+f+"(\n getValue(batch, inIdx),\n getValue(batch, inIdx + 1),\n initializationValue,\n initializationValue\n );\n\n "+d+"\n } else if ("+(3===l)+") {\n "+f+" values = "+f+"(\n getValue(batch, inIdx),\n getValue(batch, inIdx + 1),\n getValue(batch, inIdx + 2),\n initializationValue\n );\n\n "+d+"\n }\n setOutput("+c+");\n }\n "},Mi=function(t,e){this.variableNames=["A"],this.usesPackedTextures=!0,this.outputShape=t;for(var n="",r=0;r<4;r++){var i="thisRC = rc;";r%2==1&&(i+="thisRC.z += 1;"),r>1&&(i+="thisRC.y += 1;"),n+="\n "+i+"\n "+(r>0?"if(thisRC.y < rows && thisRC.z < cols){":"")+"\n int flatIndex = getFlatIndex(thisRC);\n\n ivec3 inputRC = inputCoordsFromReshapedOutCoords(flatIndex);\n vec2 inputRCInnerDims = vec2(float(inputRC.y),float(inputRC.z));\n\n result["+r+"] =\n getChannel(getA(inputRC.x, inputRC.y, inputRC.z), inputRCInnerDims);\n "+(r>0?"}":"")+"\n "}this.userCode="\n "+function(t){return"\n ivec3 inputCoordsFromReshapedOutCoords(int index) {\n "+rn(["r","c","d"],t)+"\n return ivec3(r, c, d);\n }\n "}(e)+"\n "+function(t){return"\n int getFlatIndex(ivec3 coords) {\n return round("+function(t,e){if(t.length!==e.length)throw new Error("Vectors to be dotted must be of the same length -got "+t.length+" and "+e.length);for(var n=[],r=Math.floor(t.length/4),i=t.length%4,a=0;a<r;a++){var o=t.slice(4*a,4*a+4),s=e.slice(4*a,4*a+4);n.push(an(o)+", "+an(s))}return 0!==i&&(o=t.slice(4*r),s=e.slice(4*r),1===o.length&&(o=o.map(function(t){return"float("+t+")"}),s=s.map(function(t){return"float("+t+")"})),n.push(an(o)+", "+an(s))),n.map(function(t,e){return"dot("+t+")"}).join("+")}(["coords.x","coords.y","coords.z"],U(t).map(function(t){return t.toString()}).concat(["1."]))+");\n }\n "}(t)+"\n\n void main() {\n ivec3 rc = getOutputCoords();\n\n vec4 result = vec4(0.);\n\n ivec3 thisRC;\n int rows = "+t[1]+";\n int cols = "+t[2]+";\n\n "+n+"\n\n setOutput(result);\n }\n "};var Ti=function(t,e,n){this.variableNames=["dy"],this.outputShape=[],this.outputShape=e.shape;var r=e.shape,i=r[1],a=r[2],o=t.shape,s=o[1],c=o[2],u=[n&&s>1?i-1:i,n&&c>1?a-1:a],l=[n&&s>1?s-1:s,n&&c>1?c-1:c],d=u[0]/l[0],f=u[1]/l[1],h=1/d,p=1/f,m=2*Math.ceil(h)+2,v=2*Math.ceil(p)+2;this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int d = coords[3];\n int r = coords[1];\n int c = coords[2];\n\n float accumulator = 0.0;\n\n const float heightScale = float("+d+");\n const float widthScale = float("+f+");\n\n const float invHeightScale = float("+h+");\n const float invWidthScale = float("+p+");\n\n const int winHeight = int("+m+");\n const int winWidth = int("+v+");\n\n // Compute bounds for where in dy we will look\n float startRLerp = floor(float(r) * invHeightScale);\n int startDyR = int(startRLerp - float(winHeight / 2));\n\n float startCLerp = floor(float(c) * invWidthScale);\n int startDyC = int(startCLerp - float(winWidth / 2));\n\n // Loop over dy\n for (int dyROffset = 0; dyROffset < winHeight; dyROffset++) {\n int dyR = dyROffset + startDyR;\n\n // Guard against the window exceeding the bounds of dy\n if (dyR < 0 || dyR >= "+s+") {\n continue;\n }\n\n for (int dyCOffset = 0; dyCOffset < winWidth; dyCOffset++) {\n int dyC = dyCOffset + startDyC;\n\n // Guard against the window exceeding the bounds of dy\n if (dyC < 0 || dyC >= "+c+") {\n continue;\n }\n\n float dxR = float(dyR) * heightScale;\n int topDxRIndex = int(floor(dxR));\n int bottomDxRIndex = int(min(ceil(dxR), "+(i-1)+".0));\n float dxRLerp = dxR - float(topDxRIndex);\n float inverseDxRLerp = 1.0 - dxRLerp;\n\n float dxC = float(dyC) * widthScale;\n int leftDxCIndex = int(floor(dxC));\n int rightDxCIndex = int(min(ceil(dxC), "+(a-1)+".0));\n float dxCLerp = dxC - float(leftDxCIndex);\n float inverseDxCLerp = 1.0 - dxCLerp;\n\n if (r == topDxRIndex && c == leftDxCIndex) {\n // topLeft\n accumulator +=\n getDy(b, dyR, dyC, d) * inverseDxRLerp * inverseDxCLerp;\n }\n\n if (r == topDxRIndex && c == rightDxCIndex) {\n // topRight\n accumulator += getDy(b, dyR, dyC, d) * inverseDxRLerp * dxCLerp;\n }\n\n if (r == bottomDxRIndex && c == leftDxCIndex) {\n // bottomLeft\n accumulator += getDy(b, dyR, dyC, d) * dxRLerp * inverseDxCLerp;\n }\n\n if (r == bottomDxRIndex && c == rightDxCIndex) {\n // bottomRight\n accumulator += getDy(b, dyR, dyC, d) * dxRLerp * dxCLerp;\n }\n }\n }\n // End loop over dy\n\n setOutput(accumulator);\n }\n "},Di=function(t,e,n,r){this.variableNames=["A"],this.outputShape=[];var i=t[0],a=t[1],o=t[2],s=t[3];this.outputShape=[i,e,n,s];var c=[r&&e>1?a-1:a,r&&n>1?o-1:o],u=[r&&e>1?e-1:e,r&&n>1?n-1:n];this.userCode="\n const vec2 effectiveInputOverOutputRatioRC = vec2(\n "+c[0]/u[0]+",\n "+c[1]/u[1]+");\n const vec2 inputShapeRC = vec2("+a+".0, "+o+".0);\n\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int d = coords[3];\n ivec2 yRC = coords.yz;\n\n // Fractional source index.\n vec2 sourceFracIndexRC = vec2(yRC) * effectiveInputOverOutputRatioRC;\n\n // Compute the four integer indices.\n ivec2 sourceFloorRC = ivec2(sourceFracIndexRC);\n ivec2 sourceCeilRC = ivec2(\n min(inputShapeRC - 1.0, ceil(sourceFracIndexRC)));\n\n float topLeft = getA(b, sourceFloorRC.x, sourceFloorRC.y, d);\n float bottomLeft = getA(b, sourceCeilRC.x, sourceFloorRC.y, d);\n float topRight = getA(b, sourceFloorRC.x, sourceCeilRC.y, d);\n float bottomRight = getA(b, sourceCeilRC.x, sourceCeilRC.y, d);\n\n vec2 fracRC = sourceFracIndexRC - vec2(sourceFloorRC);\n\n float top = topLeft + (topRight - topLeft) * fracRC.y;\n float bottom = bottomLeft + (bottomRight - bottomLeft) * fracRC.y;\n float newValue = top + (bottom - top) * fracRC.x;\n\n setOutput(newValue);\n }\n "},Ri=function(t,e,n,r){this.variableNames=["A"],this.usesPackedTextures=!0,this.outputShape=[];var i=t[0],a=t[1],o=t[2],s=t[3];this.outputShape=[i,e,n,s];var c=[r&&e>1?a-1:a,r&&n>1?o-1:o],u=[r&&e>1?e-1:e,r&&n>1?n-1:n];this.userCode="\n const vec3 effectiveInputOverOutputRatioRC = vec3(\n "+c[0]/u[0]+",\n "+c[1]/u[1]+",\n "+c[1]/u[1]+");\n const vec3 inputShapeRC = vec3("+a+".0, "+o+".0,\n "+o+".0);\n\n float getAValue(int b, int r, int c, int d) {\n return getChannel(getA(b, r, c, d), vec2(c, d));\n }\n\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int d = coords[3];\n // Calculate values for next column in yRC.z.\n ivec3 yRC = coords.yzz + ivec3(0, 0, 1);\n\n // Fractional source index.\n vec3 sourceFracIndexRC = vec3(yRC) * effectiveInputOverOutputRatioRC;\n\n // Compute the four integer indices.\n ivec3 sourceFloorRC = ivec3(sourceFracIndexRC);\n ivec3 sourceCeilRC = ivec3(\n min(inputShapeRC - 1.0, ceil(sourceFracIndexRC)));\n \n // Should we calculate next column and row elements in 2x2 packed cell.\n bool hasNextCol = d < "+(s-1)+"; \n bool hasNextRow = coords.z < "+(n-1)+";\n\n // In parallel, construct four corners for all four components in\n // packed 2x2 cell.\n vec4 topLeft = vec4(\n getAValue(b, sourceFloorRC.x, sourceFloorRC.y, d),\n hasNextCol ? getAValue(b, sourceFloorRC.x, sourceFloorRC.y, d + 1)\n : 0.0,\n hasNextRow ? getAValue(b, sourceFloorRC.x, sourceFloorRC.z, d)\n : 0.0,\n (hasNextRow && hasNextCol) ?\n getAValue(b, sourceFloorRC.x, sourceFloorRC.z, d + 1) : 0.0);\n\n vec4 bottomLeft = vec4(\n getAValue(b, sourceCeilRC.x, sourceFloorRC.y, d),\n hasNextCol ? getAValue(b, sourceCeilRC.x, sourceFloorRC.y, d + 1)\n : 0.0,\n hasNextRow ? getAValue(b, sourceCeilRC.x, sourceFloorRC.z, d)\n : 0.0,\n (hasNextRow && hasNextCol) ?\n getAValue(b, sourceCeilRC.x, sourceFloorRC.z, d + 1) : 0.0);\n\n vec4 topRight = vec4(\n getAValue(b, sourceFloorRC.x, sourceCeilRC.y, d),\n hasNextCol ? getAValue(b, sourceFloorRC.x, sourceCeilRC.y, d + 1)\n : 0.0,\n hasNextRow ? getAValue(b, sourceFloorRC.x, sourceCeilRC.z, d)\n : 0.0,\n (hasNextRow && hasNextCol) ?\n getAValue(b, sourceFloorRC.x, sourceCeilRC.z, d + 1) : 0.0);\n\n vec4 bottomRight = vec4(\n getAValue(b, sourceCeilRC.x, sourceCeilRC.y, d),\n hasNextCol ? getAValue(b, sourceCeilRC.x, sourceCeilRC.y, d + 1)\n : 0.0,\n hasNextRow ? getAValue(b, sourceCeilRC.x, sourceCeilRC.z, d)\n : 0.0,\n (hasNextRow && hasNextCol) ?\n getAValue(b, sourceCeilRC.x, sourceCeilRC.z, d + 1) : 0.0);\n\n vec3 fracRC = sourceFracIndexRC - vec3(sourceFloorRC);\n\n vec4 top = mix(topLeft, topRight, fracRC.yyzz);\n vec4 bottom = mix(bottomLeft, bottomRight, fracRC.yyzz);\n vec4 newValue = mix(top, bottom, fracRC.x);\n\n setOutput(newValue);\n }\n "},Pi=function(t,e,n){this.variableNames=["dy"],this.outputShape=[],this.outputShape=e.shape;var r=e.shape,i=r[1],a=r[2],o=t.shape,s=o[1],c=o[2],u=[n&&s>1?i-1:i,n&&c>1?a-1:a],l=[n&&s>1?s-1:s,n&&c>1?c-1:c],d=u[0]/l[0],f=u[1]/l[1],h=1/d,p=1/f,m=2*Math.ceil(h)+2,v=2*Math.ceil(p)+2;this.userCode="\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int d = coords[3];\n int r = coords[1];\n int c = coords[2];\n\n float accumulator = 0.0;\n\n const float heightScale = float("+d+");\n const float widthScale = float("+f+");\n\n const float invHeightScale = float("+h+");\n const float invWidthScale = float("+p+");\n\n const int winHeight = int("+m+");\n const int winWidth = int("+v+");\n\n // Compute bounds for where in dy we will look\n float startRLerp = floor(float(r) * invHeightScale);\n int startDyR = int(floor(startRLerp - float(winHeight / 2)));\n\n float startCLerp = floor(float(c) * invWidthScale);\n int startDyC = int(floor(startCLerp - float(winWidth / 2)));\n\n // Loop over dy\n for (int dyROffset = 0; dyROffset < winHeight; dyROffset++) {\n int dyR = dyROffset + startDyR;\n\n // Guard against the window exceeding the bounds of dy\n if (dyR < 0 || dyR >= "+s+") {\n continue;\n }\n\n for (int dyCOffset = 0; dyCOffset < winWidth; dyCOffset++) {\n int dyC = dyCOffset + startDyC;\n\n // Guard against the window exceeding the bounds of dy\n if (dyC < 0 || dyC >= "+c+") {\n continue;\n }\n\n float sourceFracRow =\n float("+u[0]+") *\n (float(dyR) / float("+l[0]+"));\n\n float sourceFracCol =\n float("+u[1]+") *\n (float(dyC) / float("+l[1]+"));\n\n int sourceNearestRow = int(min(\n float(int("+i+") - 1),\n "+n+" ? float(round(sourceFracRow)) :\n float(floor(sourceFracRow))));\n\n int sourceNearestCol = int(min(\n float(int("+a+") - 1),\n "+n+" ? float(round(sourceFracCol)) :\n float(floor(sourceFracCol))));\n\n if (r == sourceNearestRow && c == sourceNearestCol) {\n accumulator += getDy(b, dyR, dyC, d);\n }\n }\n }\n // End loop over dy\n\n setOutput(accumulator);\n }\n "},Oi=function(t,e,n,r){this.variableNames=["A"],this.outputShape=[];var i=t[0],a=t[1],o=t[2],s=t[3];this.outputShape=[i,e,n,s];var c=[r&&e>1?a-1:a,r&&n>1?o-1:o],u=[r&&e>1?e-1:e,r&&n>1?n-1:n],l=r?"0.5":"0.0";this.userCode="\n const vec2 effectiveInputOverOutputRatioRC = vec2(\n "+c[0]/u[0]+",\n "+c[1]/u[1]+");\n const vec2 inputShapeRC = vec2("+a+".0, "+o+".0);\n\n void main() {\n ivec4 coords = getOutputCoords();\n int b = coords[0];\n int d = coords[3];\n ivec2 yRC = coords.yz;\n\n // Fractional source index.\n vec2 sourceFracIndexRC = vec2(yRC) * effectiveInputOverOutputRatioRC;\n\n // Compute the coordinators of nearest neighbor point.\n ivec2 sourceNearestRC = ivec2(\n min(inputShapeRC - 1.0, floor(sourceFracIndexRC + "+l+")));\n\n float newValue = getA(b, sourceNearestRC.x, sourceNearestRC.y, d);\n\n setOutput(newValue);\n }\n "},Li=function(t,e){this.variableNames=["x"];var n=t.length;if(n>4)throw new Error("WebGL backend: Reverse of rank-"+n+" tensor is not yet supported");if(this.outputShape=t,1!==n){var r=t.map(function(n,r){return function(n){return-1!==e.indexOf(n)&&1!==t[n]?t[n]+" - coords["+n+"] - 1":"coords["+n+"]"}(r)}).join(","),i=mn(n);this.userCode="\n void main() {\n "+i+" coords = getOutputCoords();\n setOutput(getX("+r+"));\n }\n "}else this.userCode="\n void main() {\n int coord = getOutputCoords();\n setOutput(getX("+t[0]+" - coord - 1));\n }\n "},Ai=function(t,e){this.variableNames=["x"],this.usesPackedTextures=!0;var n=t.length;if(n>4)throw new Error("WebGL backend: Reverse of rank-"+n+" tensor is not yet supported");this.outputShape=t;var r=Ze("rc",n),i=r[n-1]+" + 1 < "+this.outputShape[n-1],a=r[n-2]+" + 1 < "+this.outputShape[n-2],o=mn(n);function s(n){var r=t.map(function(r,i){return function(n,r){return-1!==e.indexOf(n)&&1!==t[n]?t[n]+" - "+r[n]+" - 1":""+r[n]}(i,n)});return"getChannel(getX("+r.join(",")+"), vec2("+r.slice(-2).join(",")+"))"}this.userCode=1===n?"\n void main(){\n int rc = getOutputCoords();\n vec4 result = vec4(0.);\n result.r = getChannel(getX("+t[0]+" - rc - 1), rc);\n if("+i+"){\n result.g = getChannel(getX("+t[0]+" - (rc + 1) - 1), rc + 1);\n }\n setOutput(result);\n }\n ":"\n void main() {\n "+o+" rc = getOutputCoords();\n vec4 result = vec4(0.);\n result.r = "+s(r.slice())+";\n if("+i+"){\n result.g = "+function(t){return t[n-1]="("+t[n-1]+" + 1)",s(t)}(r.slice())+";\n }\n if("+a+") {\n result.b = "+function(t){return t[n-2]="("+t[n-2]+" + 1)",s(t)}(r.slice())+";\n if("+i+") {\n result.a = "+function(t){return t[n-1]="("+t[n-1]+" + 1)",t[n-2]="("+t[n-2]+" + 1)",s(t)}(r.slice())+";\n }\n }\n setOutput(result);\n }\n "},Ni=function(t,e,n,r,i,a,o){void 0===o&&(o=!0),this.variableNames=["updates","indices","defaultValue"],this.outputShape=a;var s=mn(i.length),c=mn(a.length),u="";1===n?u="i":2===n&&(u="i, j");var l="getIndices("+u+")",d="";1===r?d="i":2===r&&(d="i, coords[1]");var f="getUpdates("+d+")",h=e>1?"strides[j]":"strides";this.userCode="\n "+s+" strides = "+s+"("+i+");\n\n void main() {\n "+c+" coords = getOutputCoords();\n float sum = 0.0;\n bool found = false;\n for (int i = 0; i < "+t+"; i++) {\n int flattenedIndex = 0;\n for (int j = 0; j < "+e+"; j++) {\n int index = round("+l+");\n flattenedIndex += index * "+h+";\n }\n if (flattenedIndex == coords[0]) {\n sum += "+f+";\n found = true;\n }\n }\n setOutput(mix(getDefaultValue(), sum, float(found)));\n }\n "},Bi=function(t,e){this.variableNames=["x","segmentIds"];var n=t.windowSize,r=t.batchSize,i=t.inSize,a=t.numSegments,o=a*Math.ceil(i/n);this.outputShape=[r,o];var s=4*Math.floor(n/4),c=n%4,u="\n sumValue += dot(values, segFilter);\n ",l="";i%n>0&&(l="\n if (inIdx < 0 || inIdx >= "+i+") {\n return initializationValue;\n }\n ");var d="";i%n>0&&(d="\n if (inIdx < 0 || inIdx >= "+i+") {\n return -1.0;\n }\n "),this.userCode="\n const float initializationValue = 0.0;\n\n float getValue(int batch, int inIdx) {\n "+l+"\n return getX(batch, inIdx);\n }\n\n float getSegmentIdAtIndex(int inIdx) {\n "+d+"\n return getSegmentIds(inIdx);\n }\n\n void main() {\n ivec2 coords = getOutputCoords();\n int batch = coords[0];\n int outIdx = coords[1];\n int inOffset = int(floor(float(outIdx) / float(\n "+a+")) * float("+n+"));\n int currentSeg = int(mod(float(outIdx), float("+a+")));\n\n float sumValue = 0.0;\n\n for (int i = 0; i < "+s+"; i += 4) {\n int inIdx = inOffset + i;\n vec4 values = vec4(\n getValue(batch, inIdx),\n getValue(batch, inIdx + 1),\n getValue(batch, inIdx + 2),\n getValue(batch, inIdx + 3)\n );\n\n vec4 segFilter = vec4(\n int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,\n int(getSegmentIdAtIndex(inIdx + 1)) == currentSeg ? 1 : 0,\n int(getSegmentIdAtIndex(inIdx + 2)) == currentSeg ? 1 : 0,\n int(getSegmentIdAtIndex(inIdx + 3)) == currentSeg ? 1 : 0\n );\n\n "+u+"\n }\n\n int inIdx = inOffset + "+s+";\n if ("+(1===c)+") {\n vec4 values = vec4(\n getValue(batch, inIdx),\n initializationValue,\n initializationValue,\n initializationValue\n );\n\n int inIdxSeg = int(getSegmentIdAtIndex(inIdx));\n\n vec4 segFilter = vec4(\n int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,\n 0,\n 0,\n 0\n );\n\n "+u+"\n } else if ("+(2===c)+") {\n vec4 values = vec4(\n getValue(batch, inIdx),\n getValue(batch, inIdx + 1),\n initializationValue,\n initializationValue\n );\n\n vec4 segFilter = vec4(\n int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,\n int(getSegmentIdAtIndex(inIdx + 1)) == currentSeg ? 1 : 0,\n 0,\n 0\n );\n\n "+u+"\n } else if ("+(3===c)+") {\n vec4 values = vec4(\n getValue(batch, inIdx),\n getValue(batch, inIdx + 1),\n getValue(batch, inIdx + 2),\n initializationValue\n );\n\n vec4 segFilter = vec4(\n int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,\n int(getSegmentIdAtIndex(inIdx + 1)) == currentSeg ? 1 : 0,\n int(getSegmentIdAtIndex(inIdx + 2)) == currentSeg ? 1 : 0,\n 0\n );\n\n "+u+"\n }\n setOutput(sumValue);\n }\n "},ji=function(t,e,n){var r,i;if(this.variableNames=["c","a","b"],this.outputShape=e,n>4)throw Error("Where for rank "+n+" is not yet supported");if(1===n)i="resRC",r="resRC";else{for(var a=["resRC.x","resRC.y","resRC.z","resRC.w"],o=[],s=[],c=0;c<e.length;c++)s.push(""+a[c]),c<t&&o.push(""+a[c]);r=o.join(),i=s.join()}var u=mn(n);this.userCode="\n void main() {\n "+u+" resRC = getOutputCoords();\n float cVal = getC("+r+");\n if (cVal >= 1.0) {\n setOutput(getA("+i+"));\n } else {\n setOutput(getB("+i+"));\n }\n }\n "},Fi=function(){function t(t){this.variableNames=["source"],this.outputShape=t,this.rank=t.length;var e,n=mn(this.rank),r="uniform int start["+this.rank+"];",i=function(t){if(1===t)return"sourceLoc";if(t<=6)return Yi.slice(0,t).map(function(t){return"sourceLoc."+t}).join(",");throw Error("Slicing for rank "+t+" is not yet supported")}(this.rank);e="\n "+n+" sourceLoc;\n "+n+" coords = getOutputCoords();\n 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r.push(t)})];if(i=this.texData.get(t),a=i.texture,o=i.values,s=i.texShape,c=i.isPacked,u=i.shape,d=i.slice,f=i.dtype,null!=d)return h=new Ji(u,"return x;"),p=this.compileAndRun(h,[{dataId:t,shape:u,dtype:f}]),m=this.read(p.dataId),p.dispose(),[2,m];if(null!=o)return[2,this.convertAndCacheOnCPU(t)];if(this.pendingRead.set(t,[]),!zt.get("WEBGL_DOWNLOAD_FLOAT_ENABLED")&&2===zt.get("WEBGL_VERSION"))throw new Error("tensor.data() with WEBGL_DOWNLOAD_FLOAT_ENABLED=false and WEBGL_VERSION=2 not yet supported.");return v=s[1],_=s[0],c&&(e=cr(s[0],s[1]),v=e[0],_=e[1]),g=this.gpgpu.maybeCreateBufferFromTexture(a,_,v),[4,this.gpgpu.createAndWaitForFence()];case 1:return l.sent(),g instanceof WebGLTexture?b=this.getValuesFromTexture(t):(y=k(u),c?(x=Yr(u),w=1,C=1,u.length&&(n=$r(u),w=n[0],C=n[1]),b=this.gpgpu.downloadPackedMatrixFromBuffer(g,x,w,C,s[0],s[1]).subarray(0,y)):b=this.gpgpu.downloadFloat32MatrixFromBuffer(g,s[0],s[1]).subarray(0,y)),E=this.convertAndCacheOnCPU(t,b),S=this.pendingRead.get(t),this.pendingRead.delete(t),S.forEach(function(t){return t(E)}),this.pendingDisposal.has(t)&&(this.pendingDisposal.delete(t),this.disposeData(t)),[2,E]}})})},t.prototype.getValuesFromTexture=function(t){var e,n=this,r=this.texData.get(t),i=r.shape,a=r.dtype,o=r.texture,s=r.texShape,c=k(i);if(zt.get("WEBGL_DOWNLOAD_FLOAT_ENABLED")){if(this.texData.get(t).isPacked){var u=Yr(i),l=1,d=1;return i.length&&(l=(e=$r(i))[0],d=e[1]),this.gpgpu.downloadMatrixFromPackedTexture(o,u,l,d,s[0],s[1]).subarray(0,c)}return this.gpgpu.downloadFloat32MatrixFromOutputTexture(o,s[0],s[1]).subarray(0,c)}var f=this.makeTensorHandle(i,"float32");f.size=k(i),this.texData.get(f.dataId).usage=nr.DOWNLOAD;var h=Gt(function(){var e=new Kn(i);return n.compileAndRun(e,[{shape:i,dtype:a,dataId:t}],f,null,!1)}),p=this.texData.get(h.dataId),m=this.gpgpu.downloadByteEncodedFloatMatrixFromOutputTexture(p.texture,p.texShape[0],p.texShape[1]).subarray(0,c);return this.disposeData(f.dataId),m},t.prototype.time=function(t){return u(this,void 0,void 0,function(){var e,n,r,i,a,o,s;return l(this,function(c){switch(c.label){case 0:return e=this.activeTimers,n=[],r=!1,null==this.programTimersStack?(this.programTimersStack=n,r=!0):this.activeTimers.push(n),this.activeTimers=n,t(),i=w(this.activeTimers.map(function(t){return t.query})).filter(function(t){return null!=t}),a=w(this.activeTimers.map(function(t){return t.name})).filter(function(t){return null!=t}),this.activeTimers=e,r&&(this.programTimersStack=null),[4,Promise.all(i)];case 1:return o=c.sent(),s={uploadWaitMs:this.uploadWaitMs,downloadWaitMs:this.downloadWaitMs,kernelMs:_(o),getExtraProfileInfo:function(){return o.map(function(t,e){return{name:a[e],ms:t}}).map(function(t){return t.name+": "+t.ms}).join(", ")},wallMs:null},this.uploadWaitMs=0,this.downloadWaitMs=0,[2,s]}})})},t.prototype.memory=function(){return{unreliable:!1,numBytesInGPU:this.numBytesInGPU}},t.prototype.startTimer=function(){return zt.get("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")>0?this.gpgpu.beginQuery():{startMs:performance.now(),endMs:null}},t.prototype.endTimer=function(t){return zt.get("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")>0?(this.gpgpu.endQuery(),t):(t.endMs=performance.now(),t)},t.prototype.getQueryTime=function(t){return u(this,void 0,void 0,function(){var e;return l(this,function(n){return zt.get("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")>0?[2,this.gpgpu.waitForQueryAndGetTime(t)]:[2,(e=t).endMs-e.startMs]})})},t.prototype.disposeData=function(t){if(!this.pendingDisposal.has(t))if(this.pendingRead.has(t))this.pendingDisposal.add(t);else if(this.texData.has(t)){var e=this.texData.get(t),n=e.texture,r=e.dtype,i=e.texShape,a=e.usage,o=e.complexTensors,s=e.isPacked,c=e.slice;if(null!=n){var u=c&&c.origDataId||t,l=this.dataRefCount.get(u);l>1?this.dataRefCount.set(u,l-1):(this.dataRefCount.delete(u),this.releaseTexture(t,n,i,a,r,s),this.texData.delete(t))}null!=o&&(o.real.dispose(),o.imag.dispose())}},t.prototype.getTexture=function(t){return this.uploadToGPU(t),this.texData.get(t).texture},t.prototype.getCPUBackend=function(){return zt.get("WEBGL_CPU_FORWARD")?(null==this.cpuBackend&&(this.cpuBackend=zt.findBackend("cpu")),this.cpuBackend):null},t.prototype.shouldExecuteOnCPU=function(t,e){var n=this;return void 0===e&&(e=128),null!=this.getCPUBackend()&&t.every(function(t){return null==n.texData.get(t.dataId).texture&&t.size<e})},t.prototype.getGPGPUContext=function(){return this.gpgpu},t.prototype.getCanvas=function(){return this.canvas},t.prototype.complex=function(t,e){var n=this.makeOutputArray(t.shape,"complex64");return this.texData.get(n.dataId).complexTensors={real:zt.engine.keep(t.clone()),imag:zt.engine.keep(e.clone())},n},t.prototype.real=function(t){return this.texData.get(t.dataId).complexTensors.real.clone()},t.prototype.imag=function(t){return this.texData.get(t.dataId).complexTensors.imag.clone()},t.prototype.slice=function(t,e,n){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.slice(t,e,n);var r=this.texData.get(t.dataId).isPacked,i=be(t.shape,e,n);if(r||!i){var a=zt.get("WEBGL_PACK_ARRAY_OPERATIONS")?new $i(n):new Fi(n),o=a.getCustomSetupFunc(e);return this.compileAndRun(a,[t],null,o)}return this.uploadToGPU(t.dataId),this.shallowSlice(t,e,n)},t.prototype.shallowSlice=function(t,e,n){var r=this.texData.get(t.dataId),i=ht.make(n,{},t.dtype,this),a=this.texData.get(i.dataId);Object.assign(a,r),a.shape=n,a.dtype=t.dtype;var o=ye(e,t.strides);r.slice&&(o+=r.slice.flatOffset),a.slice={flatOffset:o,origDataId:r.slice&&r.slice.origDataId||t.dataId};var s=this.dataRefCount.get(a.slice.origDataId)||1;return this.dataRefCount.set(a.slice.origDataId,s+1),i},t.prototype.stridedSlice=function(t,e,n,r,i,a,o,s,c){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.stridedSlice(t,e,n,r,i,a,o,s,c);var u=ve(t.shape,e,n,r,i,a,o,s,c),l=u[0],d=u[1],f=u[2],h=d.filter(function(t,e){return-1===f.indexOf(e)});if(h.some(function(t){return 0===t}))return Ie([],h);var p=new zi(l,r,d,f);return this.compileAndRun(p,[t])},t.prototype.reverse=function(t,e){var n=zt.get("WEBGL_PACK_ARRAY_OPERATIONS")?new Ai(t.shape,e):new Li(t.shape,e);return this.compileAndRun(n,[t])},t.prototype.concat=function(t,e){if(this.shouldExecuteOnCPU(t))return this.cpuBackend.concat(t,e);if(1===t.length)return t[0];if(t.length>zt.get("WEBGL_MAX_TEXTURES_IN_SHADER")){var n=Math.floor(t.length/2),r=this.concat(t.slice(0,n),e),i=this.concat(t.slice(n),e);return this.concat([r,i],e)}if(zt.get("WEBGL_PACK_ARRAY_OPERATIONS")&&t[0].rank>1){var a=new Ln(t.map(function(t){return t.shape}),e);return this.compileAndRun(a,t)}var o=le(t.map(function(t){return t.shape}),e),s=t.map(function(t){return t.as2D(-1,k(t.shape.slice(e)))}),c=new On(s.map(function(t){return t.shape}));return this.compileAndRun(c,s).reshape(o)},t.prototype.neg=function(t){var e=new Ji(t.shape,"return -x;");return this.compileAndRun(e,[t])},t.prototype.batchMatMul=function(t,e,n,r){var i=n?t.shape[2]:t.shape[1],a=r?e.shape[1]:e.shape[2],o=n?t.shape[1]:t.shape[2],s=t.shape[0];if((1===i||1===a)&&o>1e3){n&&(t=t.transpose([0,2,1])),r&&(e=e.transpose([0,2,1]));var c=1===a?t:t.as3D(s,o,1),u=1===a?2:1,l=1===a?e.as3D(s,1,o):e;return this.multiply(c,l).sum(u,!0)}var d=wt(t.dtype,e.dtype),f=new yi(t.shape,[s,i,a],n,r),h=this.makePackedTensor(f.outputShape,d);return this.compileAndRun(f,[t,e],h)},t.prototype.fusedBatchMatMul=function(t,e,n,r,i,a){var o=n?t.shape[2]:t.shape[1],s=r?e.shape[1]:e.shape[2],c=t.shape[0],u=wt(t.dtype,e.dtype),l=new yi(t.shape,[c,o,s],n,r,!!i,a?function(t,e){if(void 0===e&&(e=!1),"linear"===t)return e?ca:Qi;if("relu"===t)return e?ua:ta;throw new Error("Activation "+t+" has not been implemented for the WebGL backend.")}(a,!0):null),d=this.makePackedTensor(l.outputShape,u),f=[t,e];return i&&f.push(i),this.compileAndRun(l,f,d)},t.prototype.multiply=function(t,e){if("complex64"===t.dtype){var n=this.texData.get(t.dataId),r=this.texData.get(e.dataId),i=new Cn(wn,t.shape,e.shape),a=new Cn(kn,t.shape,e.shape),o=[this.makeComplexComponentTensorHandle(t,n.complexTensors.real),this.makeComplexComponentTensorHandle(t,n.complexTensors.imag),this.makeComplexComponentTensorHandle(e,r.complexTensors.real),this.makeComplexComponentTensorHandle(e,r.complexTensors.imag)],s=this.compileAndRun(i,o),c=this.compileAndRun(a,o),u=this.complex(s,c);return s.dispose(),c.dispose(),u}if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.multiply(t,e);if(zt.get("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,In,t.dtype);var l=new Mn(In,t.shape,e.shape),d=this.makeOutputArray(l.outputShape,t.dtype);return this.compileAndRun(l,[t,e],d)},t.prototype.batchNormalization=function(t,e,n,r,i,a){var o=[t,e,n],s=null;null!=a&&(s=a.shape,o.push(a));var c=null;if(null!=i&&(c=i.shape,o.push(i)),zt.get("WEBGL_PACK_BATCHNORMALIZATION")){var u=new xn(t.shape,e.shape,n.shape,s,c,r);return this.compileAndRun(u,o)}var l=new yn(t.shape,e.shape,n.shape,s,c,r);return this.compileAndRun(l,o)},t.prototype.localResponseNormalization4D=function(t,e,n,r,i){var a=new _i(t.shape,e,n,r,i);return this.compileAndRun(a,[t])},t.prototype.LRNGrad=function(t,e,n,r,i,a,o){var s=new gi(e.shape,r,i,a,o);return this.compileAndRun(s,[e,n,t])},t.prototype.tile=function(t,e){var n=new Wi(t.shape,e);return this.compileAndRun(n,[t])},t.prototype.pad=function(t,e,n){var r=zt.get("WEBGL_PACK_ARRAY_OPERATIONS")?new Ei(t.shape,e,n):new Ci(t.shape,e,n);return this.compileAndRun(r,[t])},t.prototype.transpose=function(t,e){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.transpose(t,e);var n=zt.get("WEBGL_PACK_ARRAY_OPERATIONS")?new Gi(t.shape,e):new Ui(t.shape,e);return this.compileAndRun(n,[t])},t.prototype.gather=function(t,e,n){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.gather(t,e,n);var r=new er(t.shape,e.size,n);return this.compileAndRun(r,[t,e])},t.prototype.batchToSpaceND=function(t,e,n){b(t.rank<=4,function(){return"batchToSpaceND for rank > 4 with a WebGL backend not implemented yet"});var r=e.reduce(function(t,e){return t*e}),i=Zt(t.shape,e,r),a=Qt(i.length,e.length),o=te(t.shape,e,r),s=ee(n,e.length),c=ne(o,n,e.length);return t.reshape(i).transpose(a).reshape(o).slice(s,c)},t.prototype.spaceToBatchND=function(t,e,n){b(t.rank<=4,function(){return"spaceToBatchND for rank > 4 with a WebGL backend not implemented yet"});var r=e.reduce(function(t,e){return t*e}),i=[[0,0]];i.push.apply(i,n);for(var a=1+e.length;a<t.shape.length;++a)i.push([0,0]);var o=t.pad(i),s=Zt(o.shape,e,r,!1),c=Qt(s.length,e.length,!1),u=te(o.shape,e,r,!1);return o.reshape(s).transpose(c).reshape(u)},t.prototype.reduce=function(t,e,n){var r=t.shape[0],i=t.shape[1],a=he(i),o=new Ii({windowSize:a,inSize:i,batchSize:r},e),s=o.outputShape,c=s[0],u=s[1],l=this.makeOutputArray([c,u],n);return this.compileAndRun(o,[t],l),1===l.shape[1]?l:this.reduce(l,e,n)},t.prototype.argReduce=function(t,e,n){void 0===n&&(n=null);var r=t.shape[0],i=t.shape[1];null!=n&&(r=n.shape[0],i=n.shape[1]);var a=he(i),o=new Xe({windowSize:a,inSize:i,batchSize:r},e,null==n),s=o.outputShape,c=s[0],u=s[1],l=this.makeOutputArray([c,u],"int32"),d=[t];return null!=n&&d.push(n),this.compileAndRun(o,d,l),1===l.shape[1]?l:this.argReduce(t,e,l)},t.prototype.argReducePacked=function(t,e,n){void 0===n&&(n=null);var r=null!=n?n.shape:t.shape,i=he(r[r.length-1]),a=new gn(r,i,e,null==n),o=this.makePackedTensor(a.outputShape,"int32"),s=null==n?[t]:[t,n];return this.compileAndRun(a,s,o),o.rank===t.rank?this.argReducePacked(t,e,o):o},t.prototype.sum=function(t,e){oe("sum",e,t.rank);var n=ie(t.shape,e),r=n[0],i=k(n[1]),a=t.as2D(-1,i),o=kt(t.dtype);return this.reduce(a,"sum",o).reshape(r)},t.prototype.prod=function(t,e){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.prod(t,e);var n=ie(t.shape,e),r=n[0],i=k(n[1]),a=t.as2D(-1,i),o=kt(t.dtype);return this.reduce(a,"prod",o).reshape(r)},t.prototype.unsortedSegmentSum=function(t,e,n){var r=0,i=se([r],t.rank),a=t;null!=i&&(a=t.transpose(i),r=ue(1,t.rank)[0]);var o=function(t,e,n){for(var r=[],i=t.length,a=0;a<i;a++)a!==e?r.push(t[a]):r.push(n);return r}(a.shape,r,n),s=k([a.shape[r]]),c=a.as2D(-1,s),u=kt(t.dtype),l=this.segOpCompute(c,"unsortedSegmentSum",e,u,n).reshape(o);return null!=i&&(l=l.transpose(ce(i))),l},t.prototype.segOpCompute=function(t,e,n,r,i){var a=t.shape[0],o=t.shape[1],s=function(t,e){var n,r=!1;for(t<=fe?(n=t,r=!0):n=W(t,Math.floor(Math.sqrt(t)));!r;)n>e||n===t?r=!0:n=W(t,n+1);return n}(o,i),c=new Bi({windowSize:s,inSize:o,batchSize:a,numSegments:i},e),u=c.outputShape,l=u[0],d=u[1],f=this.makeOutputArray([l,d],r);return this.compileAndRun(c,[t,n],f),f.shape[1]===i?f:(n=Ne(0,i).tile([o/s]),this.segOpCompute(f,e,n,r,i))},t.prototype.argMinMaxReduce=function(t,e,n){var r=[e];if(oe("arg"+n.charAt(0).toUpperCase()+n.slice(1),r,t.rank),!zt.get("WEBGL_PACK_REDUCE")||t.rank<=2){var i=ie(t.shape,r),a=i[0],o=k(i[1]),s=t.as2D(-1,o);return this.argReduce(s,n).reshape(a)}return this.argReducePacked(t,n)},t.prototype.argMin=function(t,e){return this.argMinMaxReduce(t,e,"min")},t.prototype.argMax=function(t,e){return this.argMinMaxReduce(t,e,"max")},t.prototype.cumsum=function(t,e,n,r){if(e!==t.rank-1)throw new Error("WebGL cumsum shader expects an inner-most axis="+(t.rank-1)+" but got axis="+e);var i=new Wn(t.shape,n,r);return this.compileAndRun(i,[t])},t.prototype.equal=function(t,e){if(zt.get("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return vec4(equal(a, b));\n","bool");var n=new Mn("return float(a == b);",t.shape,e.shape),r=this.makeOutputArray(n.outputShape,"bool");return this.compileAndRun(n,[t,e],r)},t.prototype.notEqual=function(t,e){if(zt.get("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return vec4(notEqual(a, b));\n","bool");var n=new Mn("return float(a != b);",t.shape,e.shape),r=this.makeOutputArray(n.outputShape,"bool");return this.compileAndRun(n,[t,e],r)},t.prototype.less=function(t,e){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.less(t,e);if(zt.get("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return vec4(lessThan(a, b));\n","bool");var n=new Mn("return float(a < b);",t.shape,e.shape),r=this.makeOutputArray(n.outputShape,"bool");return this.compileAndRun(n,[t,e],r)},t.prototype.lessEqual=function(t,e){if(zt.get("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return vec4(lessThanEqual(a, b));\n","bool");var n=new Mn("return float(a <= b);",t.shape,e.shape),r=this.makeOutputArray(n.outputShape,"bool");return this.compileAndRun(n,[t,e],r)},t.prototype.greater=function(t,e){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.greater(t,e);if(zt.get("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return vec4(greaterThan(a, b));\n","bool");var n=new Mn("return float(a > b);",t.shape,e.shape),r=this.makeOutputArray(n.outputShape,"bool");return this.compileAndRun(n,[t,e],r)},t.prototype.greaterEqual=function(t,e){if(zt.get("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return vec4(greaterThanEqual(a, b));\n","bool");var n=new Mn("return float(a >= b);",t.shape,e.shape),r=this.makeOutputArray(n.outputShape,"bool");return this.compileAndRun(n,[t,e],r)},t.prototype.logicalNot=function(t){var e=new Ji(t.shape,"return float(!(x >= 1.0));");return this.compileAndRun(e,[t])},t.prototype.logicalAnd=function(t,e){if(zt.get("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return vec4(\n vec4(greaterThanEqual(a, vec4(1.0))) *\n vec4(greaterThanEqual(b, vec4(1.0))));\n","bool");var n=new Mn("return float(a >= 1.0 && b >= 1.0);",t.shape,e.shape),r=this.makeOutputArray(n.outputShape,"bool");return this.compileAndRun(n,[t,e],r)},t.prototype.logicalOr=function(t,e){if(zt.get("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n return min(\n vec4(greaterThanEqual(a, vec4(1.0))) +\n vec4(greaterThanEqual(b, vec4(1.0))),\n vec4(1.0));\n","bool");var n=new Mn("return float(a >= 1.0 || b >= 1.0);",t.shape,e.shape),r=this.makeOutputArray(n.outputShape,"bool");return this.compileAndRun(n,[t,e],r)},t.prototype.select=function(t,e,n){var r=new ji(t.rank,e.shape,e.rank),i=this.makeOutputArray(r.outputShape,wt(e.dtype,n.dtype));return this.compileAndRun(r,[t,e,n],i)},t.prototype.where=function(t){Jt("tf.where() in webgl locks the UI thread. Call tf.whereAsync() instead");var e=t.dataSync();return to(t.shape,e)},t.prototype.topk=function(t,e,n){return Ke(t.dataSync(),t.shape,t.dtype,e)},t.prototype.min=function(t,e){oe("min",e,t.rank);var n=ie(t.shape,e),r=n[0],i=k(n[1]),a=t.as2D(-1,i);return this.reduce(a,"min",a.dtype).reshape(r)},t.prototype.minimum=function(t,e){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.minimum(t,e);var n=zt.get("WEBGL_PACK_BINARY_OPERATIONS")?new Tn("\n vec4 result = vec4(min(a, b));\n vec4 isNaN = min(vec4(isnan(a)) + vec4(isnan(b)), vec4(1.0));\n \n result.r = isNaN.r > 0. ? NAN : result.r;\n result.g = isNaN.g > 0. ? NAN : result.g;\n result.b = isNaN.b > 0. ? NAN : result.b;\n result.a = isNaN.a > 0. ? NAN : result.a;\n\n return result;\n",t.shape,e.shape):new Mn("\n if (isnan(a)) return a;\n if (isnan(b)) return b;\n\n return min(a, b);\n",t.shape,e.shape);return this.compileAndRun(n,[t,e])},t.prototype.mod=function(t,e){var n=zt.get("WEBGL_PACK_BINARY_OPERATIONS")?new Tn("\n vec4 result = mod(a, b);\n vec4 isNaN = vec4(equal(b, vec4(0.0)));\n \n result.r = isNaN.r > 0. ? NAN : result.r;\n result.g = isNaN.g > 0. ? NAN : result.g;\n result.b = isNaN.b > 0. ? NAN : result.b;\n result.a = isNaN.a > 0. ? NAN : result.a;\n\n return result;\n",t.shape,e.shape):new Mn("if (b == 0.0) return NAN;\n return mod(a, b);",t.shape,e.shape);return this.compileAndRun(n,[t,e])},t.prototype.max=function(t,e){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.max(t,e);oe("max",e,t.rank);var n=ie(t.shape,e),r=n[0],i=k(n[1]),a=t.as2D(-1,i);return this.reduce(a,"max",a.dtype).reshape(r)},t.prototype.maximum=function(t,e){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.maximum(t,e);var n=zt.get("WEBGL_PACK_BINARY_OPERATIONS")?new Tn("\n vec4 result = vec4(max(a, b));\n vec4 isNaN = min(vec4(isnan(a)) + vec4(isnan(b)), vec4(1.0));\n \n result.r = isNaN.r > 0. ? NAN : result.r;\n result.g = isNaN.g > 0. ? NAN : result.g;\n result.b = isNaN.b > 0. ? NAN : result.b;\n result.a = isNaN.a > 0. ? NAN : result.a;\n\n return result;\n",t.shape,e.shape):new Mn("\n if (isnan(a)) return a;\n if (isnan(b)) return b;\n\n return max(a, b);\n",t.shape,e.shape);return this.compileAndRun(n,[t,e])},t.prototype.all=function(t,e){oe("all",e,t.rank);var n=ie(t.shape,e),r=n[0],i=k(n[1]),a=t.as2D(-1,i);return this.reduce(a,"all",a.dtype).reshape(r)},t.prototype.any=function(t,e){oe("any",e,t.rank);var n=ie(t.shape,e),r=n[0],i=k(n[1]),a=t.as2D(-1,i);return this.reduce(a,"any",a.dtype).reshape(r)},t.prototype.squaredDifference=function(t,e){var n=zt.get("WEBGL_PACK_BINARY_OPERATIONS")?new Tn("return (a - b) * (a - b);",t.shape,e.shape):new Mn("return (a - b) * (a - b);",t.shape,e.shape);return this.compileAndRun(n,[t,e])},t.prototype.realDivide=function(t,e){var n=new Mn("if (a == b) return 1.0;\n return a / b;",t.shape,e.shape),r=this.makeOutputArray(n.outputShape,"float32");return this.compileAndRun(n,[t,e],r)},t.prototype.floorDiv=function(t,e){if(zt.get("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n vec4 resultSign = sign(a) * sign(b);\n ivec4 ia = round(a);\n ivec4 ib = round(b);\n ivec4 result = ia / ib;\n ivec4 amodb = ia - ib * result;\n\n // Vectorize INT_DIV\n // if (resultSign < 0.0 && amodb != 0) result -= 1;\n // return float(result);\n return vec4(result -\n ivec4(lessThan(resultSign, vec4(0.0))) * ivec4(notEqual(amodb, ivec4(0))));\n","int32");var n=new Mn("\n float resultSign = sign(a) * sign(b);\n int ia = round(a);\n int ib = round(b);\n int result = ia / ib;\n int amodb = ia - ib * result;\n\n if (resultSign < 0.0 && amodb != 0) {\n result -= 1;\n }\n return float(result);\n",t.shape,e.shape),r=this.makeOutputArray(n.outputShape,"int32");return this.compileAndRun(n,[t,e],r)},t.prototype.add=function(t,e){if("complex64"===t.dtype&&"complex64"===e.dtype)return this.complexSeparableBinaryOp(t,e,En);if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.add(t,e);var n=wt(t.dtype,e.dtype);if(zt.get("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,En,n);var r=new Mn(En,t.shape,e.shape),i=this.makeOutputArray(r.outputShape,n);return this.compileAndRun(r,[t,e],i)},t.prototype.packedBinaryOp=function(t,e,n,r){var i=new Tn(n,t.shape,e.shape),a=this.makePackedTensor(i.outputShape,r);return this.compileAndRun(i,[t,e],a)},t.prototype.complexSeparableBinaryOp=function(t,e,n){var r=this,i=this.texData.get(t.dataId),a=this.texData.get(e.dataId),o=[[i.complexTensors.real,a.complexTensors.real],[i.complexTensors.imag,a.complexTensors.imag]].map(function(i){var a=i[0],o=i[1],s=r.makeComplexComponentTensorHandle(t,a),c=r.makeComplexComponentTensorHandle(e,o),u=new Mn(n,t.shape,e.shape),l=r.makeOutputArray(u.outputShape,wt(a.dtype,o.dtype));return r.compileAndRun(u,[s,c],l)}),s=o[0],c=o[1],u=this.complex(s,c);return s.dispose(),c.dispose(),u},t.prototype.makeComplexComponentTensorHandle=function(t,e){return{dataId:e.dataId,dtype:e.dtype,shape:t.shape}},t.prototype.addN=function(t){for(var e=t[0],n=1;n<t.length;n++)e=this.add(e,t[n]);return e},t.prototype.subtract=function(t,e){if("complex64"===t.dtype&&"complex64"===e.dtype)return this.complexSeparableBinaryOp(t,e,Sn);if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.subtract(t,e);var n=wt(t.dtype,e.dtype);if(zt.get("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,Sn,t.dtype);var r=new Mn(Sn,t.shape,e.shape),i=this.makeOutputArray(r.outputShape,n);return this.compileAndRun(r,[t,e],i)},t.prototype.pow=function(t,e){var n=zt.get("WEBGL_PACK_BINARY_OPERATIONS"),r=n?new Tn("\n // isModRound1 has 1 for components with round(mod(b, 2.0)) == 1, 0 otherwise.\n vec4 isModRound1 = vec4(equal(round(mod(b, 2.0)), ivec4(1)));\n vec4 multiplier = sign(a) * isModRound1 + (vec4(1.0) - isModRound1);\n vec4 result = multiplier * pow(abs(a), b);\n\n vec4 isNaN = vec4(lessThan(a, vec4(0.0))) * vec4(lessThan(floor(b), b));\n \n result.r = isNaN.r > 0. ? NAN : result.r;\n result.g = isNaN.g > 0. ? NAN : result.g;\n result.b = isNaN.b > 0. ? NAN : result.b;\n result.a = isNaN.a > 0. ? NAN : result.a;\n\n return result;\n",t.shape,e.shape):new Mn("\nif(a < 0.0 && floor(b) < b){\n return NAN;\n}\nreturn (round(mod(b, 2.0)) != 1) ?\n pow(abs(a), b) : sign(a) * pow(abs(a), b);\n",t.shape,e.shape),i=wt(t.dtype,e.dtype),a=n?this.makePackedTensor(r.outputShape,i):this.makeOutputArray(r.outputShape,i);return this.compileAndRun(r,[t,e],a)},t.prototype.ceil=function(t){var e=new Ji(t.shape,"return ceil(x);");return this.compileAndRun(e,[t])},t.prototype.floor=function(t){var e=new Ji(t.shape,"return floor(x);");return this.compileAndRun(e,[t])},t.prototype.sign=function(t){var e=new Ji(t.shape,"\n if (isnan(x)) { return 0.0; }\n return sign(x);\n");return this.compileAndRun(e,[t])},t.prototype.isNaN=function(t){var e=new Ji(t.shape,"return float(isnan(x));"),n=this.makeOutputArray(e.outputShape,"bool");return this.compileAndRun(e,[t],n)},t.prototype.isInf=function(t){var e=new Ji(t.shape,"return float(isinf(x));"),n=this.makeOutputArray(e.outputShape,"bool");return this.compileAndRun(e,[t],n)},t.prototype.isFinite=function(t){var e=new Ji(t.shape,"return float(!isnan(x) && !isinf(x));"),n=this.makeOutputArray(e.outputShape,"bool");return this.compileAndRun(e,[t],n)},t.prototype.round=function(t){var e=new Ji(t.shape,"\n // OpenGL ES does not support round function.\n // The algorithm is based on banker's rounding.\n float base = floor(x);\n if ((x - base) < 0.5) {\n return floor(x);\n } else if ((x - base) > 0.5) {\n return ceil(x);\n } else {\n if (mod(base, 2.0) == 0.0) {\n return base;\n } else {\n return base + 1.0;\n }\n }\n");return this.compileAndRun(e,[t])},t.prototype.exp=function(t){var e;return e=zt.get("WEBGL_PACK")?new la(t.shape,na):new Ji(t.shape,na),this.compileAndRun(e,[t])},t.prototype.expm1=function(t){var e=new Ji(t.shape,"return exp(x) - 1.0;");return this.compileAndRun(e,[t])},t.prototype.log=function(t){var e;return e=zt.get("WEBGL_PACK")?new la(t.shape,"\n vec4 result = log(x);\n vec4 isNaN = vec4(lessThan(x, vec4(0.0)));\n result.r = isNaN.r == 1.0 ? NAN : result.r;\n result.g = isNaN.g == 1.0 ? NAN : result.g;\n result.b = isNaN.b == 1.0 ? NAN : result.b;\n result.a = isNaN.a == 1.0 ? NAN : result.a;\n\n return result;\n"):new Ji(t.shape,"if (x < 0.0) return NAN;\n return log(x);"),this.compileAndRun(e,[t])},t.prototype.log1p=function(t){var e=new Ji(t.shape,"return log(1.0 + x);");return this.compileAndRun(e,[t])},t.prototype.sqrt=function(t){var e=new Ji(t.shape,"return sqrt(x);");return this.compileAndRun(e,[t])},t.prototype.rsqrt=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.rsqrt(t);var e=new Ji(t.shape,"return inversesqrt(x);");return this.compileAndRun(e,[t])},t.prototype.square=function(t){var e=new Ji(t.shape,"return x * x;");return this.compileAndRun(e,[t])},t.prototype.reciprocal=function(t){var e=new Ji(t.shape,"return 1.0 / x;");return this.compileAndRun(e,[t])},t.prototype.relu=function(t){var e;return e=zt.get("WEBGL_PACK")?new la(t.shape,ua):new Ji(t.shape,ta),this.compileAndRun(e,[t])},t.prototype.prelu=function(t,e){var n=zt.get("WEBGL_PACK_BINARY_OPERATIONS")?new Tn("\n vec4 aLessThanZero = vec4(lessThan(a, vec4(0.)));\n return (aLessThanZero * (b * a)) + ((vec4(1.0) - aLessThanZero) * a);\n",t.shape,e.shape):new Mn("return (a < 0.) ? b * a : a;",t.shape,e.shape);return this.compileAndRun(n,[t,e])},t.prototype.elu=function(t){var e=new Ji(t.shape,"return (x >= 0.0) ? x : (exp(x) - 1.0);");return this.compileAndRun(e,[t])},t.prototype.eluDer=function(t,e){var n=zt.get("WEBGL_PACK_BINARY_OPERATIONS")?new Tn("\n vec4 bGTEZero = vec4(greaterThanEqual(b, vec4(0.)));\n return (bGTEZero * a) + ((vec4(1.0) - bGTEZero) * (a * (b + vec4(1.0))));\n",t.shape,e.shape):new Mn("return (b >= 1.0) ? a : a * (b + 1.0);",t.shape,e.shape);return this.compileAndRun(n,[t,e])},t.prototype.selu=function(t){var e=new Ji(t.shape,ea);return this.compileAndRun(e,[t])},t.prototype.int=function(t){var e=new Ji(t.shape,"return float(int(x));"),n=this.makeOutputArray(e.outputShape,"int32");return this.compileAndRun(e,[t],n)},t.prototype.clip=function(t,e,n){var r,i=(r=zt.get("WEBGL_PACK_CLIP")?new Rn(t.shape):new Dn(t.shape)).getCustomSetupFunc(e,n);return this.compileAndRun(r,[t],null,i)},t.prototype.abs=function(t){var e=new Ji(t.shape,"return abs(x);");return this.compileAndRun(e,[t])},t.prototype.complexAbs=function(t){var e=this.texData.get(t.dataId),n=new Pn(t.shape),r=[this.makeComplexComponentTensorHandle(t,e.complexTensors.real),this.makeComplexComponentTensorHandle(t,e.complexTensors.imag)];return this.compileAndRun(n,r)},t.prototype.sigmoid=function(t){var e=new Ji(t.shape,"return 1.0 / (1.0 + exp(-1.0 * x));");return this.compileAndRun(e,[t])},t.prototype.softplus=function(t){var e=new Ji(t.shape,"\n float epsilon = 1.1920928955078125e-7;\n float threshold = log(epsilon) + 2.0;\n\n bool too_large = x > -threshold;\n bool too_small = x < threshold;\n\n float result;\n float exp_x = exp(x);\n\n if (too_large){\n result = x;\n }\n else if (too_small){\n result = exp_x;\n }\n else{\n result = log(exp_x + 1.0);\n }\n return result;\n");return this.compileAndRun(e,[t])},t.prototype.sin=function(t){var e=new Ji(t.shape,ra);return this.compileAndRun(e,[t])},t.prototype.cos=function(t){var e=new Ji(t.shape,ia);return this.compileAndRun(e,[t])},t.prototype.tan=function(t){var e=new Ji(t.shape,"return tan(x);");return this.compileAndRun(e,[t])},t.prototype.asin=function(t){var e=new Ji(t.shape,"return asin(x);");return this.compileAndRun(e,[t])},t.prototype.acos=function(t){var e=new Ji(t.shape,"return acos(x);");return this.compileAndRun(e,[t])},t.prototype.atan=function(t){var e=new Ji(t.shape,aa);return this.compileAndRun(e,[t])},t.prototype.atan2=function(t,e){var n=zt.get("WEBGL_PACK_BINARY_OPERATIONS")?new Tn("\n vec4 result = atan(a, b);\n vec4 isNaN = min(vec4(isnan(a)) + vec4(isnan(b)), vec4(1.0));\n \n result.r = isNaN.r > 0. ? NAN : result.r;\n result.g = isNaN.g > 0. ? NAN : result.g;\n result.b = isNaN.b > 0. ? NAN : result.b;\n result.a = isNaN.a > 0. ? NAN : result.a;\n\n return result;\n",t.shape,e.shape):new Mn("\n if (isnan(a)) return a;\n if (isnan(b)) return b;\n\n return atan(a, b);\n",t.shape,e.shape);return this.compileAndRun(n,[t,e])},t.prototype.sinh=function(t){var e=new Ji(t.shape,"\n float e2x = exp(x);\n return (e2x - 1.0 / e2x) / 2.0;\n");return this.compileAndRun(e,[t])},t.prototype.cosh=function(t){var e=new Ji(t.shape,"\n float e2x = exp(-x);\n return (e2x + 1.0 / e2x) / 2.0;\n");return this.compileAndRun(e,[t])},t.prototype.tanh=function(t){var e=new Ji(t.shape,"\n float e2x = exp(-2.0 * abs(x));\n return sign(x) * (1.0 - e2x) / (1.0 + e2x);\n");return this.compileAndRun(e,[t])},t.prototype.asinh=function(t){var e=new Ji(t.shape,"return log(x + sqrt(x * x + 1.0));");return this.compileAndRun(e,[t])},t.prototype.acosh=function(t){var e=new Ji(t.shape,oa);return this.compileAndRun(e,[t])},t.prototype.atanh=function(t){var e=new Ji(t.shape,sa);return this.compileAndRun(e,[t])},t.prototype.erf=function(t){var e=new Ji(t.shape,'\n // Error function is calculated approximately with elementary function.\n // See "Handbook of Mathematical Functions with Formulas,\n // Graphs, and Mathematical Tables", Abramowitz and Stegun.\n float p = 0.3275911;\n float a1 = 0.254829592;\n float a2 = -0.284496736;\n float a3 = 1.421413741;\n float a4 = -1.453152027;\n float a5 = 1.061405429;\n\n float t = 1.0 / (1.0 + p * x);\n return 1.0 - (((((a5*t + a4)*t) + a3)*t + a2)*t + a1)*t*exp(-x*x);\n');return this.compileAndRun(e,[t])},t.prototype.step=function(t,e){var n=new Ji(t.shape,function(t){return void 0===t&&(t=0),Zi+"\n return x > 0.0 ? 1.0 : float("+t+");\n "}(e));return this.compileAndRun(n,[t])},t.prototype.conv2dByMatMul=function(t,e,n){var r=t.shape,i=this.texData.get(t.dataId),a=n.inChannels,o=r[0]*r[1]*r[2],s=n.outChannels,c=(1===o||1===s)&&a>1e3,u=r[2]%2!=0&&!!i.isPacked;if(c||!zt.get("WEBGL_LAZILY_UNPACK")||!zt.get("WEBGL_PACK_BINARY_OPERATIONS")||!u){var l=this.reshape(t,[1,r[0]*r[1]*r[2],n.inChannels]),d=this.reshape(e,[1,n.inChannels,n.outChannels]);return this.reshape(this.batchMatMul(l,d,!1,!1),n.outShape)}var f=ht.make([1,r[0]*r[1]*(r[2]+1),n.inChannels],{dataId:t.dataId},t.dtype,this),h=i.shape;i.shape=i.shape.slice(),i.shape[i.shape.length-2]++,b(Hr(i.shape,f.shape),function(){return"packed reshape "+i.shape+" to "+f.shape+" isn't free"});var p=this.reshape(e,[1,n.inChannels,n.outChannels]),m=this.batchMatMul(f,p,!1,!1),v=this.texData.get(m.dataId);return b(v.isPacked,function(){return"batchMatMul result is expected to be packed"}),i.shape=h,v.shape=n.outShape,ht.make(n.outShape,{dataId:m.dataId},m.dtype,this)},t.prototype.conv2dWithIm2Row=function(t,e,n){var r=n.filterWidth,i=n.filterHeight,a=n.inChannels,o=n.outWidth,s=n.outHeight,c=r*i*a,u=s*o,l=[c,u],d=t.squeeze([0]),f=e.reshape([1,c,-1]),h=new vi(l,d.shape,n),p=this.compileAndRun(h,[d]).reshape([1,l[0],l[1]]),m=new yi(p.shape,[1,u,n.outChannels],!0,!1);return this.compileAndRun(m,[p,f]).reshape([1,s,o,n.outChannels])},t.prototype.conv2d=function(t,e,n){if(1===n.filterHeight&&1===n.filterWidth&&1===n.dilationHeight&&1===n.dilationWidth&&1===n.strideHeight&&1===n.strideWidth&&("SAME"===n.padInfo.type||"VALID"===n.padInfo.type))return this.conv2dByMatMul(t,e,n);if(zt.get("WEBGL_CONV_IM2COL")&&1===t.shape[0])return this.conv2dWithIm2Row(t,e,n);var r=new $n(n);return this.compileAndRun(r,[t,e])},t.prototype.conv2dDerInput=function(t,e,n){var r=new Nn(n);return this.compileAndRun(r,[t,e])},t.prototype.conv2dDerFilter=function(t,e,n){var r=new An(n);return this.compileAndRun(r,[t,e])},t.prototype.depthwiseConv2D=function(t,e,n){var r;return zt.get("WEBGL_PACK_DEPTHWISECONV")&&n.strideWidth<=2&&n.outChannels/n.inChannels==1?(r=new Hn(n),this.compileAndRun(r,[t,e],this.makePackedTensor(n.outShape,t.dtype))):(r=new Vn(n),this.compileAndRun(r,[t,e]))},t.prototype.depthwiseConv2DDerInput=function(t,e,n){var r=new Yn(n);return this.compileAndRun(r,[t,e])},t.prototype.depthwiseConv2DDerFilter=function(t,e,n){var r=new Fn(n);return this.compileAndRun(r,[t,e])},t.prototype.conv3d=function(t,e,n){var r=new zn(n);return this.compileAndRun(r,[t,e])},t.prototype.conv3dDerInput=function(t,e,n){var r=new jn(n);return this.compileAndRun(r,[t,e])},t.prototype.conv3dDerFilter=function(t,e,n){var r=new Bn(n);return this.compileAndRun(r,[t,e])},t.prototype.maxPool=function(t,e){var n=new Si(e,"max",!1),r=this.makeOutputArray(n.outputShape,t.dtype);return this.compileAndRun(n,[t],r)},t.prototype.avgPool=function(t,e){var n=new Si(e,"avg",!1),r=this.makeOutputArray(n.outputShape,"float32");return this.compileAndRun(n,[t],r)},t.prototype.maxPoolBackprop=function(t,e,n,r){var i=new Si(r,"max",!0),a=this.compileAndRun(i,[e]),o=new bi(r),s=this.makeOutputArray(o.outputShape,e.dtype),c=this.compileAndRun(o,[t,a],s);return a.dispose(),c},t.prototype.avgPoolBackprop=function(t,e,n){var r=new bn(n),i=this.makeOutputArray(r.outputShape,e.dtype);return this.compileAndRun(r,[t],i)},t.prototype.cast=function(t,e){return Ye(t,e,this)},t.prototype.unstack=function(t,e){for(var n=t.shape[e],r=new Array(t.rank-1),i=0,a=0;a<t.rank;a++)a!==e&&(r[i++]=t.shape[a]);var o=new Array(t.rank).fill(0),s=t.shape.slice();s[e]=1;var c=new Array(n);for(a=0;a<c.length;a++)o[e]=a,c[a]=this.slice(t,o,s).reshape(r);return c},t.prototype.reshape=function(t,e){var n=this.texData.get(t.dataId);return!n.isPacked||Hr(t.shape,e)||null!==n.texture&&Hr(n.shape,e)?$e(t,e):this.packedReshape(t,e)},t.prototype.resizeBilinear=function(t,e,n,r){var i=zt.get("WEBGL_PACK_IMAGE_OPERATIONS")?new Ri(t.shape,e,n,r):new Di(t.shape,e,n,r);return this.compileAndRun(i,[t])},t.prototype.resizeBilinearBackprop=function(t,e,n){var r=new Ti(t,e,n);return this.compileAndRun(r,[t])},t.prototype.resizeNearestNeighbor=function(t,e,n,r){var i=new Oi(t.shape,e,n,r);return this.compileAndRun(i,[t])},t.prototype.resizeNearestNeighborBackprop=function(t,e,n){var r=new Pi(t,e,n);return this.compileAndRun(r,[t])},t.prototype.multinomial=function(t,e,n,r){var i=e?t:we(t),a=i.shape[0],o=i.shape[1],s=new xi(a,o,n),c=this.makeOutputArray(s.outputShape,"int32"),u=s.getCustomSetupFunc(r);return this.compileAndRun(s,[i],c,u)},t.prototype.oneHot=function(t,e,n,r){var i=new wi(t.size,e,n,r);return this.compileAndRun(i,[t])},t.prototype.nonMaxSuppression=function(t,e,n,r,i){return Jt("tf.nonMaxSuppression() in webgl locks the UI thread. Call tf.nonMaxSuppressionAsync() instead"),We(t.dataSync(),e.dataSync(),n,r,i)},t.prototype.cropAndResize=function(t,e,n,r,i,a){var o=new qn(t.shape,e.shape,r,i,a);return this.compileAndRun(o,[t,e,n])},t.prototype.depthToSpace=function(t,e,n){b(e>1,function(){return"blockSize should be > 1 for depthToSpace, but was: "+e});var r=t.shape[0],i="NHWC"===n?t.shape[1]:t.shape[2],a="NHWC"===n?t.shape[2]:t.shape[3],o="NHWC"===n?t.shape[3]:t.shape[1],s=i*e,c=a*e,u=o/(e*e),l=new Gn("NHWC"===n?[r,s,c,u]:[r,u,s,c],e,n);return this.compileAndRun(l,[t])},t.prototype.split=function(t,e,n){return Ge(t,e,n)},t.prototype.scatterND=function(t,e,n){var r=me(0,t,n),i=r.sliceRank,a=r.numUpdates,o=r.sliceSize,s=r.strides,c=r.outputSize,u=[c/o,o],l=t.reshape([a,i]),d=e.reshape([a,o]);if(0===c)return $e(Ie([]),n);var f=Me(0),h=new Ni(a,i,l.rank,d.rank,s,u);return this.compileAndRun(h,[d,l,f]).reshape(n)},t.prototype.sparseToDense=function(t,e,n,r){var i=me(0,t,n),a=i.sliceRank,o=i.numUpdates,s=i.strides,c=i.outputSize,u=new Ni(o,a,t.rank,e.rank,s,[c,1],!1);return this.compileAndRun(u,[e,t,r]).reshape(n)},t.prototype.fft=function(t){return this.fftImpl(t,!1)},t.prototype.ifft=function(t){return this.fftImpl(t,!0)},t.prototype.fftImpl=function(t,e){var n=this.texData.get(t.dataId),r=new Zn(Xn,t.shape,e),i=new Zn(Jn,t.shape,e),a=[this.makeComplexComponentTensorHandle(t,n.complexTensors.real),this.makeComplexComponentTensorHandle(t,n.complexTensors.imag)],o=this.compileAndRun(r,a),s=this.compileAndRun(i,a),c=this.complex(o,s).as2D(t.shape[0],t.shape[1]);return o.dispose(),s.dispose(),c},t.prototype.gatherND=function(t,e){var n=e.shape,r=n[n.length-1],i=de(t,e),a=i[0],o=i[1],s=i[2],c=i[3],u=e.reshape([o,r]),l=t.reshape([t.size/s,s]),d=new ir(r,c,[o,s]);return this.compileAndRun(d,[l,u]).reshape(a)},t.prototype.fill=function(t,e,n){if("string"===(n=n||H(e))){var r=L(n,k(t));return r.fill(e),ht.make(t,{values:r},n)}var i=new Qn(t,e),a=i.getCustomSetupFunc(e),o=this.makeOutputArray(t,n);return this.compileAndRun(i,[],o,a)},t.prototype.onesLike=function(t){if("string"===t.dtype)throw new Error("onesLike is not supported under string dtype");return this.fill(t.shape,1,t.dtype)},t.prototype.zerosLike=function(t){return this.fill(t.shape,"string"===t.dtype?"":0,t.dtype)},t.prototype.makeOutputArray=function(t,e){return ht.make(t,{},e,this)},t.prototype.makePackedTensor=function(t,e){var n=ht.make(t,{},e,this);return this.texData.get(n.dataId).isPacked=!0,n},t.prototype.unpackTensor=function(t){var e=new da(t.shape);return this.compileAndRun(e,[t],ht.make(e.outputShape,{},t.dtype,this))},t.prototype.packTensor=function(t){var e=new ki(t.shape);return this.compileAndRun(e,[t],this.makePackedTensor(t.shape,t.dtype))},t.prototype.packedReshape=function(t,e){var n=t.reshape([Yr(t.shape)].concat($r(t.shape))),r=[Yr(e)].concat($r(e)),i=new Mi(r,n.shape);return this.compileAndRun(i,[n]).reshape(e)},t.prototype.compileAndRun=function(t,e,n,r,i){var a=this;if(void 0===i&&(i=!0),null==n&&(n=t.usesPackedTextures?this.makePackedTensor(t.outputShape,e[0].dtype):this.makeOutputArray(t.outputShape,e[0].dtype)),0===n.size)return this.texData.get(n.dataId).values=O(n.dtype,0),n;var o=e.map(function(e){if("complex64"===e.dtype)throw new Error("GPGPUProgram does not support complex64 input. 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t.constructor.name+"_"+r+"_"+i}(t,o,c),l=this.getAndSaveBinary(u,function(){return function(t,e,n,r){var i=e.userCode,a=n.map(function(t,n){var r={logicalShape:t.shape,texShape:t.isUniform?null:t.texData.texShape,isUniform:t.isUniform,isPacked:!t.isUniform&&t.texData.isPacked,flatOffset:null};return null!=t.texData&&null!=t.texData.slice&&t.texData.slice.flatOffset>0&&(r.flatOffset=t.texData.slice.flatOffset),{name:e.variableNames[n],shapeInfo:r}}),o=a.map(function(t){return t.shapeInfo}),s={logicalShape:r.shape,texShape:r.texData.texShape,isUniform:!1,isPacked:r.texData.isPacked,flatOffset:null},c=on(a,s,i,e.usesPackedTextures),u=t.createProgram(c),l=null,d=null;1===zt.get("WEBGL_VERSION")&&(l=t.getUniformLocation(u,"INFINITY",!1),d=t.getUniformLocation(u,"NAN",!1));for(var f={},h=0;h<e.variableNames.length;h++){var p=e.variableNames[h];f[p]=t.getUniformLocation(u,p,!1),f["offset"+p]=t.getUniformLocation(u,"offset"+p,!1)}return{program:e,source:c,webGLProgram:u,uniformLocations:f,inShapeInfos:o,outShapeInfo:s,infLoc:l,nanLoc:d}}(a.gpgpu,t,o,c)}),d=null!=this.activeTimers;d&&(s=this.startTimer()),function(t,e,n,r,i){mi(e.inShapeInfos,n),mi([e.outShapeInfo],[r]);var a=r.texData.texture,o=r.texData.texShape;r.texData.isPacked?t.setOutputPackedMatrixTexture(a,o[0],o[1]):t.setOutputMatrixTexture(a,o[0],o[1]),t.setProgram(e.webGLProgram),1===zt.get("WEBGL_VERSION")&&(null!==e.infLoc&&t.gl.uniform1f(e.infLoc,1/0),null!==e.nanLoc&&t.gl.uniform1f(e.nanLoc,NaN)),n.forEach(function(n,r){var i=e.program.variableNames[r],a=e.uniformLocations[i],o=e.uniformLocations["offset"+i];if(null!=a)if(n.isUniform)if(k(n.shape)<2)t.gl.uniform1f(a,n.uniformValues[0]);else{var s=n.uniformValues;s instanceof Float32Array||(s=new Float32Array(s)),t.gl.uniform1fv(a,s)}else null!=n.texData.slice&&null!=o&&t.gl.uniform1i(o,n.texData.slice.flatOffset),t.setInputMatrixTexture(n.texData.texture,a,r)}),null!=i&&i(t,e.webGLProgram),t.executeProgram()}(this.gpgpu,l,o,c,r);var f=1024*zt.get("WEBGL_NUM_MB_BEFORE_PAGING");if(i&&this.numBytesInGPU>f)for(var h=this.numBytesInGPU-f;h>0&&this.lruDataGPU.length>0;){var p=this.lruDataGPU.shift(),m=this.texData.get(p),v=m.texShape,_=m.dtype;h-=this.computeBytes(v,_),this.read(p)}return d&&(s=this.endTimer(s),this.activeTimers.push({name:t.constructor.name,query:this.getQueryTime(s)})),zt.get("WEBGL_LAZILY_UNPACK")||!this.texData.get(n.dataId).isPacked||t.isPackShader?n:this.unpackTensor(n)},t.prototype.getAndSaveBinary=function(t,e){return t in this.binaryCache||(this.binaryCache[t]=e()),this.binaryCache[t]},t.prototype.getTextureManager=function(){return this.textureManager},t.prototype.dispose=function(){this.disposed||(this.textureManager.dispose(),this.canvas.remove(),null!=this.fromPixels2DContext&&this.fromPixels2DContext.canvas.remove(),this.gpgpuCreatedLocally&&(this.gpgpu.program=null,this.gpgpu.dispose()),this.disposed=!0)},t.prototype.floatPrecision=function(){var t=this;return Gt(function(){var e=zt.get("DEBUG");zt.set("DEBUG",!1);var n=t.abs(Me(1e-8)).dataSync()[0];return zt.set("DEBUG",e),n>0?32:16})},t.prototype.uploadToGPU=function(t){var e,n=this.texData.get(t),r=n.shape,i=n.dtype,a=n.values,o=n.texture,s=n.usage,c=n.isPacked;if(null==o){var u,l=null!=this.activeTimers;l&&(u=performance.now());var d=zr(r,c);n.texShape=d;var f=this.acquireTexture(t,d,s,i,c);if(n.texture=f,null!=a){if(c){var h=Yr(r),p=1,m=1;r.length&&(p=(e=$r(r))[0],m=e[1]),this.gpgpu.uploadMatrixToPackedTexture(f,h,p,m,d[0],d[1],ro(a))}else this.gpgpu.uploadMatrixToTexture(f,d[0],d[1],ro(a));n.values=null,l&&(this.uploadWaitMs+=performance.now()-u)}}else zt.get("WEBGL_NUM_MB_BEFORE_PAGING")<Number.POSITIVE_INFINITY&&this.lruDataGPU.indexOf(t)>=0&&(this.lruDataGPU.splice(this.lruDataGPU.indexOf(t),1),this.lruDataGPU.push(t))},t.prototype.convertAndCacheOnCPU=function(t,e){var n=this.texData.get(t),r=n.texture,i=n.texShape,a=n.dtype,o=n.usage,s=n.isPacked;return null!=r&&(this.releaseTexture(t,r,i,o,a,s),n.texture=null,n.texShape=null,n.isPacked=!1),n.usage=nr.UPLOAD,null!=e&&(n.values=function(t,e){if("float32"===e||"complex64"===e)return t;if("int32"===e||"bool"===e){for(var n="int32"===e?new Int32Array(t.length):new Uint8Array(t.length),r=0;r<n.length;++r)n[r]=Math.round(t[r]);return n}throw new Error("Unknown dtype "+e)}(e,a)),n.values},t.prototype.releaseTexture=function(t,e,n,r,i,a){if(zt.get("WEBGL_NUM_MB_BEFORE_PAGING")<Number.POSITIVE_INFINITY){var o=this.lruDataGPU.indexOf(t);o>=0&&this.lruDataGPU.splice(o,1)}this.numBytesInGPU-=this.computeBytes(n,i),this.textureManager.releaseTexture(e,n,r,a)},t.prototype.acquireTexture=function(t,e,n,r,i){return zt.get("WEBGL_NUM_MB_BEFORE_PAGING")<Number.POSITIVE_INFINITY&&this.lruDataGPU.push(t),this.numBytesInGPU+=this.computeBytes(e,r),this.textureManager.acquireTexture(e,n,i)},t.prototype.computeBytes=function(t,e){return t[0]*t[1]*F(e)},t}();function ro(t){return t instanceof Float32Array?t:new Float32Array(t)}zt.get("IS_BROWSER")&&zt.registerBackend("webgl",function(){return new no},2);var io=xe({abs_:function(t){var e=qt(t,"x","abs");return"complex64"===e.dtype?zt.engine.runKernel(function(t){return t.complexAbs(e)},{$x:e}):zt.engine.runKernel(function(t,n){var r=t.abs(e);return n([e]),r},{$x:e},function(t,e){var n=e[0];return{$x:function(){return t.mul(n.toFloat().step(-1))}}})}}),ao=xe({acos_:function(t){var e=qt(t,"x","acos");return zt.engine.runKernel(function(t,n){var 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Float32Array(e.length),r=0;r<e.length;++r){var i=e[r];n[r]=i*i}return ht.make(t.shape,{values:n})},t.prototype.reciprocal=function(t){this.assertNotComplex(t,"reciprocal");for(var e=t.dataSync(),n=new Float32Array(e.length),r=0;r<e.length;++r)n[r]=1/e[r];return ht.make(t.shape,{values:n})},t.prototype.linear=function(t){return t},t.prototype.relu=function(t){this.assertNotComplex(t,"relu");for(var e=Le(t.shape,t.dtype),n=e.dataSync(),r=t.dataSync(),i=0;i<r.length;++i)n[i]=Math.max(0,r[i]);return e},t.prototype.prelu=function(t,e){return this.assertNotComplex([t,e],"prelu"),this.broadcastedBinaryOp(t,e,t.dtype,function(t,e){return t<0?e*t:t})},t.prototype.elu=function(t){this.assertNotComplex(t,"elu");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r){var i=n[r];e[r]=i>=0?i:Math.exp(i)-1}return ht.make(t.shape,{values:e})},t.prototype.eluDer=function(t,e){this.assertNotComplex([t,e],"eluDer");for(var n=new 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Int32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r)e[r]=n[r];return ht.make(t.shape,{values:e},"int32")},t.prototype.sigmoid=function(t){this.assertNotComplex(t,"sigmoid");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r)e[r]=1/(1+Math.exp(-n[r]));return ht.make(t.shape,{values:e})},t.prototype.softplus=function(t){this.assertNotComplex(t,"softplus");for(var e=Math.log(1.1920928955078125e-7)+2,n=new Float32Array(t.size),r=t.dataSync(),i=0;i<r.length;++i){var a,o=r[i]>-e,s=r[i]<e,c=Math.exp(r[i]);a=s?c:o?r[i]:Math.log(1+c),n[i]=a}return ht.make(t.shape,{values:n})},t.prototype.sin=function(t){this.assertNotComplex(t,"sin");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r)e[r]=Math.sin(n[r]);return ht.make(t.shape,{values:e})},t.prototype.cos=function(t){this.assertNotComplex(t,"cos");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r)e[r]=Math.cos(n[r]);return ht.make(t.shape,{values:e})},t.prototype.tan=function(t){this.assertNotComplex(t,"tan");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r)e[r]=Math.tan(n[r]);return ht.make(t.shape,{values:e})},t.prototype.asin=function(t){this.assertNotComplex(t,"asin");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r)e[r]=Math.asin(n[r]);return ht.make(t.shape,{values:e})},t.prototype.acos=function(t){this.assertNotComplex(t,"acos");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r)e[r]=Math.acos(n[r]);return ht.make(t.shape,{values:e})},t.prototype.atan=function(t){this.assertNotComplex(t,"atan");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r)e[r]=Math.atan(n[r]);return ht.make(t.shape,{values:e})},t.prototype.atan2=function(t,e){return this.assertNotComplex([t,e],"atan2"),this.broadcastedBinaryOp(t,e,t.dtype,function(t,e){return Math.atan2(t,e)})},t.prototype.sinh=function(t){this.assertNotComplex(t,"sinh");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r)e[r]=Math.sinh(n[r]);return ht.make(t.shape,{values:e})},t.prototype.cosh=function(t){this.assertNotComplex(t,"cosh");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r)e[r]=Math.cosh(n[r]);return ht.make(t.shape,{values:e})},t.prototype.tanh=function(t){this.assertNotComplex(t,"tanh");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r)e[r]=S(n[r]);return ht.make(t.shape,{values:e})},t.prototype.asinh=function(t){this.assertNotComplex(t,"asinh");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r)e[r]=Math.asinh(n[r]);return ht.make(t.shape,{values:e})},t.prototype.acosh=function(t){this.assertNotComplex(t,"acosh");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r)e[r]=Math.acosh(n[r]);return ht.make(t.shape,{values:e})},t.prototype.atanh=function(t){this.assertNotComplex(t,"atanh");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r)e[r]=Math.atanh(n[r]);return ht.make(t.shape,{values:e})},t.prototype.erf=function(t){this.assertNotComplex(t,"erf");for(var e=new Float32Array(t.size),n=t.dataSync(),r=0;r<n.length;++r){var i=n[r],a=1/(1+.3275911*i);e[r]=1-((((1.061405429*a-1.453152027)*a+1.421413741)*a-.284496736)*a+.254829592)*a*Math.exp(-i*i)}return ht.make(t.shape,{values:e})},t.prototype.step=function(t,e){void 0===e&&(e=0),this.assertNotComplex(t,"step");for(var n=new Float32Array(t.size),r=t.dataSync(),i=0;i<r.length;++i){var a=r[i];isNaN(a)?n[i]=NaN:n[i]=a>0?1:e}return ht.make(t.shape,{values:n})},t.prototype.conv2d=function(t,e,n){this.assertNotComplex([t,e],"conv2d");for(var r=n.filterHeight,i=n.filterWidth,a=n.dilationHeight,o=n.dilationWidth,s=n.padInfo.left,c=n.padInfo.top,u=Ma(n.outShape,t.dtype),l=t.dataSync(),d=e.dataSync(),f=u.values,h=0;h<n.batchSize;++h)for(var p=h*t.strides[0],m=h*u.strides[0],v=0;v<n.outHeight;++v)for(var _=m+v*u.strides[1],g=v*n.strideHeight-s,b=0;b<r;b++){var y=g+b*a;if(!(y<0||y>=n.inHeight))for(var x=b*e.strides[0],w=p+y*t.strides[1],k=0;k<n.outWidth;++k)for(var C=_+k*n.outChannels,E=k*n.strideWidth-c,S=0;S<i;S++){var I=E+S*o;if(!(I<0||I>=n.inWidth))for(var M=x+S*e.strides[1],T=w+I*n.inChannels,D=M,R=0;R<n.inChannels;++R){for(var P=l[T+R],O=0;O<n.outChannels;++O)f[C+O]+=P*d[D+O];D+=n.outChannels}}}return u.toTensor()},t.prototype.conv3d=function(t,e,n){for(var r=n.filterDepth,i=n.filterHeight,a=n.filterWidth,o=n.dilationDepth,s=n.dilationHeight,c=n.dilationWidth,u=n.padInfo.front,l=n.padInfo.left,d=n.padInfo.top,f=Ma(n.outShape,t.dtype),h=t.dataSync(),p=e.dataSync(),m=f.values,v=0;v<n.batchSize;++v)for(var _=v*t.strides[0],g=v*f.strides[0],b=0;b<n.outDepth;++b)for(var y=g+b*f.strides[1],x=b*n.strideDepth-u,w=0;w<r;w++){var k=x+w*o;if(!(k<0||k>=n.inDepth))for(var C=w*e.strides[0],E=_+k*t.strides[1],S=0;S<n.outHeight;++S)for(var I=y+S*f.strides[2],M=S*n.strideHeight-d,T=0;T<i;T++){var D=M+T*s;if(!(D<0||D>=n.inHeight))for(var R=C+T*e.strides[1],P=E+D*t.strides[2],O=0;O<n.outWidth;++O)for(var L=I+O*n.outChannels,A=O*n.strideWidth-l,N=0;N<a;N++){var B=A+N*c;if(!(B<0||B>=n.inWidth))for(var j=R+N*e.strides[2],F=P+B*n.inChannels,Y=j,$=0;$<n.inChannels;++$){for(var z=h[F+$],V=0;V<n.outChannels;++V)m[L+V]+=z*p[Y+V];Y+=n.outChannels}}}}return f.toTensor()},t.prototype.conv2dDerInput=function(t,e,n){this.assertNotComplex([t,e],"conv2dDerInput");for(var r=Ma(n.inShape,"float32"),i=r.values,a=r.strides,o=a[0],s=a[1],c=a[2],u=t.dataSync(),l=t.strides,d=l[0],f=l[1],h=l[2],p=e.dataSync(),m=e.strides,v=m[0],_=m[1],g=m[2],b=n.batchSize,y=n.filterHeight,x=n.filterWidth,w=n.inChannels,k=n.inHeight,C=n.inWidth,E=n.outChannels,S=n.outHeight,I=n.outWidth,M=n.strideHeight,T=n.strideWidth,D=y-1-n.padInfo.top,R=x-1-n.padInfo.left,P=0;P<b;++P)for(var O=0;O<w;++O)for(var L=0;L<k;++L)for(var A=L-D,N=Math.max(0,Math.ceil(A/M)),B=Math.min(S,(y+A)/M),j=0;j<C;++j){for(var F=j-R,Y=Math.max(0,Math.ceil(F/T)),$=Math.min(I,(x+F)/T),z=0,V=N;V<B;++V)for(var H=V*M-A,q=Y;q<$;++q)for(var W=d*P+f*V+h*q,U=v*(y-1-H)+_*(x-1-(q*T-F))+g*O,G=0;G<E;++G)z+=u[W+G]*p[U+G];i[o*P+s*L+c*j+O]=z}return r.toTensor()},t.prototype.conv3dDerInput=function(t,e,n){for(var r=Ma(n.inShape,"float32"),i=r.values,a=r.strides,o=a[0],s=a[1],c=a[2],u=a[3],l=t.dataSync(),d=t.strides,f=d[0],h=d[1],p=d[2],m=d[3],v=e.dataSync(),_=e.strides,g=_[0],b=_[1],y=_[2],x=_[3],w=n.batchSize,k=n.filterDepth,C=n.filterHeight,E=n.filterWidth,S=n.inChannels,I=n.inDepth,M=n.inHeight,T=n.inWidth,D=n.outChannels,R=n.outDepth,P=n.outHeight,O=n.outWidth,L=n.strideDepth,A=n.strideHeight,N=n.strideWidth,B=k-1-n.padInfo.front,j=C-1-n.padInfo.top,F=E-1-n.padInfo.left,Y=0;Y<w;++Y)for(var $=0;$<S;++$)for(var z=0;z<I;++z)for(var V=z-B,H=Math.max(0,Math.ceil(V/L)),q=Math.min(R,(k+V)/L),W=0;W<M;++W)for(var U=W-j,G=Math.max(0,Math.ceil(U/A)),K=Math.min(P,(C+U)/A),X=0;X<T;++X){for(var J=X-F,Z=Math.max(0,Math.ceil(J/N)),Q=Math.min(O,(E+J)/N),tt=0,et=H;et<q;++et)for(var nt=et*L-V,rt=G;rt<K;++rt)for(var it=rt*A-U,at=Z;at<Q;++at)for(var ot=f*Y+h*et+p*rt+m*at,st=g*(k-1-nt)+b*(C-1-it)+y*(E-1-(at*N-J))+x*$,ct=0;ct<D;++ct)tt+=l[ot+ct]*v[st+ct];i[o*Y+s*z+c*W+u*X+$]=tt}return r.toTensor()},t.prototype.conv2dDerFilter=function(t,e,n){this.assertNotComplex([t,e],"conv2dDerFilter");for(var r=n.strideHeight,i=n.strideWidth,a=n.filterHeight,o=n.filterWidth,s=Ma(n.filterShape,"float32"),c=n.padInfo.left,u=n.padInfo.top,l=t.bufferSync(),d=e.bufferSync(),f=0;f<a;++f)for(var h=Math.max(0,Math.ceil((u-f)/r)),p=Math.min(n.outHeight,(n.inHeight+u-f)/r),m=0;m<o;++m)for(var v=Math.max(0,Math.ceil((c-m)/i)),_=Math.min(n.outWidth,(n.inWidth+c-m)/i),g=0;g<n.inChannels;++g)for(var b=0;b<n.outChannels;++b){for(var y=0,x=0;x<n.batchSize;++x)for(var w=h;w<p;++w)for(var k=f+w*r-u,C=v;C<_;++C){var E=m+C*i-c;y+=l.get(x,k,E,g)*d.get(x,w,C,b)}s.set(y,f,m,g,b)}return s.toTensor()},t.prototype.conv3dDerFilter=function(t,e,n){for(var r=n.strideDepth,i=n.strideHeight,a=n.strideWidth,o=n.filterDepth,s=n.filterHeight,c=n.filterWidth,u=Ma(n.filterShape,"float32"),l=u.values,d=u.strides,f=d[0],h=d[1],p=d[2],m=d[3],v=e.dataSync(),_=e.strides,g=_[0],b=_[1],y=_[2],x=_[3],w=t.dataSync(),k=t.strides,C=k[0],E=k[1],S=k[2],I=k[3],M=n.padInfo.front,T=n.padInfo.left,D=n.padInfo.top,R=0;R<o;++R)for(var P=Math.max(0,Math.ceil((M-R)/r)),O=Math.min(n.outDepth,(n.inDepth+M-R)/r),L=R*f,A=0;A<s;++A)for(var N=Math.max(0,Math.ceil((D-A)/i)),B=Math.min(n.outHeight,(n.inHeight+D-A)/i),j=A*h+L,F=0;F<c;++F)for(var Y=Math.max(0,Math.ceil((T-F)/a)),$=Math.min(n.outWidth,(n.inWidth+T-F)/a),z=F*p+j,V=0;V<n.inChannels;++V)for(var H=V*m+z,q=0;q<n.outChannels;++q){for(var W=0,U=0;U<n.batchSize;++U)for(var G=U*C,K=U*g,X=P;X<O;++X)for(var J=(R+X*r-M)*E+G,Z=X*b+K,Q=N;Q<B;++Q)for(var tt=(A+Q*i-D)*S+J,et=Q*y+Z,nt=Y;nt<$;++nt){var rt=nt*x+et;W+=w[(F+nt*a-T)*I+tt+V]*v[rt+q]}l[H+q]=W}return u.toTensor()},t.prototype.depthwiseConv2D=function(t,e,n){this.assertNotComplex([t,e],"depthwiseConv2D");for(var r=n.filterHeight,i=n.filterWidth,a=n.dilationHeight,o=n.dilationWidth,s=n.padInfo.left,c=n.padInfo.top,u=n.outChannels/n.inChannels,l=Ma(n.outShape,t.dtype),d=t.dataSync(),f=e.dataSync(),h=l.values,p=0;p<n.batchSize;++p)for(var m=p*t.strides[0],v=p*l.strides[0],_=0;_<n.outHeight;++_)for(var g=v+_*l.strides[1],b=_*n.strideHeight-s,y=0;y<r;++y){var x=b+y*a;if(!(x<0||x>=n.inHeight))for(var w=y*e.strides[0],k=m+x*t.strides[1],C=0;C<n.outWidth;++C)for(var E=g+C*l.strides[2],S=C*n.strideWidth-c,I=0;I<i;++I){var M=S+I*o;if(!(M<0||M>=n.inWidth))for(var T=w+I*e.strides[1],D=k+M*n.inChannels,R=E,P=T,O=0;O<n.inChannels;++O){for(var L=d[D+O],A=0;A<u;++A)h[R+A]+=L*f[P+A];R+=u,P+=u}}}return l.toTensor()},t.prototype.depthwiseConv2DDerInput=function(t,e,n){this.assertNotComplex([t,e],"depthwiseConv2DDerInput");for(var r=Ma(n.inShape,"float32"),i=r.values,a=r.strides,o=a[0],s=a[1],c=a[2],u=t.dataSync(),l=t.strides,d=l[0],f=l[1],h=l[2],p=e.dataSync(),m=e.strides,v=m[0],_=m[1],g=m[2],b=n.batchSize,y=n.filterHeight,x=n.filterWidth,w=n.inChannels,k=n.inHeight,C=n.inWidth,E=n.outChannels,S=n.outHeight,I=n.outWidth,M=n.strideHeight,T=n.strideWidth,D=y-1-n.padInfo.top,R=x-1-n.padInfo.left,P=E/w,O=0;O<b;++O)for(var L=0;L<w;++L)for(var A=0;A<k;++A)for(var N=A-D,B=Math.max(0,Math.ceil(N/M)),j=Math.min(S,(y+N)/M),F=0;F<C;++F){for(var Y=F-R,$=Math.max(0,Math.ceil(Y/T)),z=Math.min(I,(x+Y)/T),V=0,H=B;H<j;++H)for(var q=H*M-N,W=$;W<z;++W)for(var U=d*O+f*H+h*W,G=v*(y-1-q)+_*(x-1-(W*T-Y))+g*L,K=0;K<P;++K)V+=u[U+(L*P+K)]*p[G+K];i[o*O+s*A+c*F+L]=V}return r.toTensor()},t.prototype.depthwiseConv2DDerFilter=function(t,e,n){this.assertNotComplex([t,e],"depthwiseConv2DDerFilter");for(var r=n.strideHeight,i=n.strideWidth,a=n.filterHeight,o=n.filterWidth,s=Ma(n.filterShape,"float32"),c=n.padInfo.left,u=n.padInfo.top,l=n.outChannels/n.inChannels,d=t.bufferSync(),f=e.bufferSync(),h=0;h<a;++h)for(var p=Math.max(0,Math.ceil((u-h)/r)),m=Math.min(n.outHeight,(n.inHeight+u-h)/r),v=0;v<o;++v)for(var _=Math.max(0,Math.ceil((c-v)/i)),g=Math.min(n.outWidth,(n.inWidth+c-v)/i),b=0;b<n.outChannels;++b){for(var y=Math.trunc(b/l),x=b%l,w=0,k=0;k<n.batchSize;++k)for(var C=p;C<m;++C)for(var E=h+C*r-u,S=_;S<g;++S){var I=v+S*i-c;w+=d.get(k,E,I,y)*f.get(k,C,S,b)}s.set(w,h,v,y,x)}return s.toTensor()},t.prototype.tile=function(t,e){this.assertNotComplex(t,"tile");for(var n=new Array(t.rank),r=0;r<n.length;r++)n[r]=t.shape[r]*e[r];var i=Ma(n,t.dtype),a=t.bufferSync();for(r=0;r<i.values.length;++r){for(var o=i.indexToLoc(r),s=new Array(t.rank),c=0;c<s.length;c++)s[c]=o[c]%t.shape[c];var u=a.locToIndex(s);i.values[r]=a.values[u]}return i.toTensor()},t.prototype.pad=function(t,e,n){this.assertNotComplex(t,"pad");var r=e.map(function(e,n){return e[0]+t.shape[n]+e[1]}),i=e.map(function(t){return t[0]}),a=t.bufferSync(),o=Ma(r,t.dtype);0!==n&&o.values.fill(n);for(var s=0;s<t.size;s++){var c=a.indexToLoc(s),u=c.map(function(t,e){return t+i[e]});o.set.apply(o,[a.get.apply(a,c)].concat(u))}return o.toTensor()},t.prototype.transpose=function(t,e){this.assertNotComplex(t,"transpose");for(var n=new Array(t.rank),r=0;r<n.length;r++)n[r]=t.shape[e[r]];var i=t.dataSync(),a=Ma(n,t.dtype),o=t.bufferSync();for(r=0;r<t.size;++r){for(var s=o.indexToLoc(r),c=new Array(s.length),u=0;u<c.length;u++)c[u]=s[e[u]];var l=a.locToIndex(c);a.values[l]=i[r]}return a.toTensor()},t.prototype.gather=function(t,e,n){this.assertNotComplex([t,e],"gather");var r=t.shape.slice(),i=e.dataSync();r[n]=i.length;for(var a=Ma(r,t.dtype),o=t.bufferSync(),s=0;s<a.size;++s){var c=a.indexToLoc(s),u=c.slice();u[n]=i[c[n]];var l=o.locToIndex(u);a.values[s]=o.values[l]}return a.toTensor()},t.prototype.batchToSpaceND=function(t,e,n){this.assertNotComplex([t],"batchToSpaceND");var r=e.reduce(function(t,e){return t*e}),i=Zt(t.shape,e,r),a=Qt(i.length,e.length),o=te(t.shape,e,r),s=ee(n,e.length),c=ne(o,n,e.length);return t.reshape(i).transpose(a).reshape(o).slice(s,c)},t.prototype.spaceToBatchND=function(t,e,n){this.assertNotComplex([t],"spaceToBatchND");var r=e.reduce(function(t,e){return t*e}),i=[[0,0]];i.push.apply(i,n);for(var a=1+e.length;a<t.shape.length;++a)i.push([0,0]);var o=t.pad(i),s=Zt(o.shape,e,r,!1),c=Qt(s.length,e.length,!1),u=te(o.shape,e,r,!1);return o.reshape(s).transpose(c).reshape(u)},t.prototype.pool=function(t,e,n){this.assertNotComplex(t,"pool");for(var r=e.strideHeight,i=e.strideWidth,a=e.dilationHeight,o=e.dilationWidth,s=e.effectiveFilterHeight,c=e.effectiveFilterWidth,u=e.padInfo.top,l=e.padInfo.left,d="max"===n?Number.NEGATIVE_INFINITY:Number.POSITIVE_INFINITY,f=t.dataSync(),h=Ma(e.outShape,t.dtype),p=h.values,m=e.outShape[1]*e.outShape[2]*e.outShape[3],v=e.outShape[2]*e.outShape[3],_=e.outShape[3],g=0;g<e.batchSize;++g)for(var b=g*m,y=g*t.strides[0],x=0;x<e.inChannels;++x)for(var w=0;w<e.outHeight;++w)for(var k=w*r-u,C=Math.max(0,k),E=Math.min(e.inHeight,s+k),S=b+w*v,I=0;I<e.outWidth;++I){for(var M=I*i-l,T=Math.max(0,M),D=Math.min(e.inWidth,c+M),R=d,P=0,O=0,L=C;L<E;L+=a){for(var A=y+L*t.strides[1],N=T;N<D;N+=o){var B=f[A+N*t.strides[2]+x];"max"===n&&B>R?R=B:"avg"===n&&(P+=B,O++)}if(isNaN(R))break}p[S+I*_+x]="avg"===n?P/O:R}return h.toTensor()},t.prototype.maxPool=function(t,e){return this.pool(t,e,"max")},t.prototype.maxPoolPositions=function(t,e){for(var n=Ma(e.outShape,"int32"),r=e.strideHeight,i=e.strideWidth,a=e.dilationHeight,o=e.dilationWidth,s=e.effectiveFilterHeight,c=e.effectiveFilterWidth,u=e.padInfo.top,l=e.padInfo.left,d=t.bufferSync(),f=0;f<e.batchSize;++f)for(var h=0;h<e.inChannels;++h)for(var p=0;p<e.outHeight;++p){for(var m=p*r-u,v=m;v<0;)v+=a;for(var _=Math.min(e.inHeight,s+m),g=0;g<e.outWidth;++g){for(var b=g*i-l,y=b;y<0;)y+=o;for(var x=Math.min(e.inWidth,c+b),w=Number.NEGATIVE_INFINITY,k=-1,C=v;C<_;C+=a)for(var E=C-m,S=y;S<x;S+=o){var I=S-b,M=d.get(f,C,S,h);M>w&&(w=M,k=E*c+I)}n.set(k,f,p,g,h)}}return n.toTensor()},t.prototype.maxPoolBackprop=function(t,e,n,r){this.assertNotComplex([e,n],"maxPoolBackprop");for(var i=this.maxPoolPositions(e,r),a=r.strideHeight,o=r.strideWidth,s=r.dilationHeight,c=r.dilationWidth,u=r.effectiveFilterHeight,l=r.effectiveFilterWidth,d=l-1-r.padInfo.left,f=u-1-r.padInfo.top,h=Ma(e.shape,"float32"),p=i.bufferSync(),m=t.bufferSync(),v=0;v<r.batchSize;++v)for(var _=0;_<r.inChannels;++_)for(var g=0;g<r.inHeight;++g)for(var b=0;b<r.inWidth;++b){for(var y=g-f,x=b-d,w=0,k=0;k<u;k+=s){var C=(y+k)/a;if(!(C<0||C>=r.outHeight||Math.floor(C)!==C))for(var E=0;E<l;E+=c){var S=(x+E)/o;if(!(S<0||S>=r.outWidth||Math.floor(S)!==S)){var I=u*l-1-p.get(v,C,S,_)===k*l+E?1:0;0!==I&&(w+=m.get(v,C,S,_)*I)}}}h.set(w,v,g,b,_)}return h.toTensor()},t.prototype.avgPoolBackprop=function(t,e,n){this.assertNotComplex([t,e],"avgPoolBackprop");for(var r=n.strideHeight,i=n.strideWidth,a=n.filterHeight,o=n.filterWidth,s=n.dilationHeight,c=n.dilationWidth,u=n.effectiveFilterHeight,l=n.effectiveFilterWidth,d=l-1-n.padInfo.left,f=u-1-n.padInfo.top,h=Ma(e.shape,"float32"),p=1/(a*o),m=t.bufferSync(),v=0;v<n.batchSize;++v)for(var _=0;_<n.inChannels;++_)for(var g=0;g<n.inHeight;++g)for(var b=0;b<n.inWidth;++b){for(var y=g-f,x=b-d,w=0,k=0;k<u;k+=s){var C=(y+k)/r;if(!(C<0||C>=n.outHeight||Math.floor(C)!==C))for(var E=0;E<l;E+=c){var S=(x+E)/i;S<0||S>=n.outWidth||Math.floor(S)!==S||(w+=m.get(v,C,S,_))}}h.set(w*p,v,g,b,_)}return h.toTensor()},t.prototype.cast=function(t,e){return Ye(t,e,this)},t.prototype.reshape=function(t,e){return $e(t,e)},t.prototype.avgPool=function(t,e){return this.assertNotComplex(t,"avgPool"),this.pool(t,e,"avg").toFloat()},t.prototype.resizeBilinear=function(t,e,n,r){this.assertNotComplex(t,"resizeBilinear");for(var i=t.shape,a=i[0],o=i[1],s=i[2],c=i[3],u=t.dataSync(),l=new Float32Array(k([a,e,n,c])),d=[r&&e>1?o-1:o,r&&n>1?s-1:s],f=[r&&e>1?e-1:e,r&&n>1?n-1:n],h=0,p=d[0]/f[0],m=d[1]/f[1],v=0;v<a;v++)for(var _=0;_<e;_++)for(var g=p*_,b=Math.floor(g),y=g-b,x=Math.min(o-1,Math.ceil(g)),w=v*t.strides[0]+b*t.strides[1],C=v*t.strides[0]+x*t.strides[1],E=0;E<n;E++)for(var S=m*E,I=Math.floor(S),M=S-I,T=Math.min(s-1,Math.ceil(S)),D=w+I*t.strides[2],R=C+I*t.strides[2],P=w+ +T*t.strides[2],O=C+T*t.strides[2],L=0;L<c;L++){var A=u[D+L],N=u[R+L],B=A+(u[P+L]-A)*M,j=B+(N+(u[O+L]-N)*M-B)*y;l[h++]=j}return Ie(l,[a,e,n,c])},t.prototype.resizeBilinearBackprop=function(t,e,n){this.assertNotComplex([t,e],"resizeBilinearBackprop");for(var r=e.shape,i=r[0],a=r[1],o=r[2],s=r[3],c=t.shape,u=c[1],l=c[2],d=new Float32Array(i*a*o*s),f=[n&&u>1?a-1:a,n&&l>1?o-1:o],h=[n&&u>1?u-1:u,n&&l>1?l-1:l],p=f[0]/h[0],m=f[1]/h[1],v=t.dataSync(),_=0,g=0;g<i;g++)for(var b=g*e.strides[0],y=0;y<u;y++)for(var x=y*p,w=Math.floor(x),k=Math.min(Math.ceil(x),a-1),C=b+w*e.strides[1],E=b+k*e.strides[1],S=x-w,I=1-S,M=0;M<l;M++)for(var T=M*m,D=Math.floor(T),R=Math.min(Math.ceil(T),o-1),P=T-D,O=1-P,L=C+D*e.strides[2],A=C+R*e.strides[2],N=E+D*e.strides[2],B=E+R*e.strides[2],j=I*O,F=I*P,Y=S*O,$=S*P,z=0;z<s;z++){var V=v[_++];d[L+z]+=V*j,d[A+z]+=V*F,d[N+z]+=V*Y,d[B+z]+=V*$}return Pe(d,[i,o,a,s],e.dtype)},t.prototype.resizeNearestNeighbor=function(t,e,n,r){this.assertNotComplex(t,"resizeNearestNeighbor");for(var i=t.shape,a=i[0],o=i[1],s=i[2],c=i[3],u=t.dataSync(),l=new Float32Array(a*e*n*c),d=[r&&e>1?o-1:o,r&&n>1?s-1:s],f=[r&&e>1?e-1:e,r&&n>1?n-1:n],h=d[0]/f[0],p=d[1]/f[1],m=0,v=0;v<a;v++)for(var _=v*t.strides[0],g=0;g<e;g++)for(var b=h*g,y=_+Math.min(o-1,r?Math.round(b):Math.floor(b))*t.strides[1],x=0;x<n;x++)for(var w=p*x,k=y+Math.min(s-1,r?Math.round(w):Math.floor(w))*t.strides[2],C=0;C<c;C++){var E=u[k+C];l[m++]=E}return Ie(l,[a,e,n,c],t.dtype)},t.prototype.resizeNearestNeighborBackprop=function(t,e,n){this.assertNotComplex([t,e],"resizeNearestNeighborBackprop");for(var r=e.shape,i=r[0],a=r[1],o=r[2],s=r[3],c=t.shape,u=c[1],l=c[2],d=new Float32Array(i*a*o*s),f=t.dataSync(),h=[n&&u>1?a-1:a,n&&l>1?o-1:o],p=[n&&u>1?u-1:u,n&&l>1?l-1:l],m=h[0]/p[0],v=h[1]/p[1],_=1/m,g=1/v,b=2*Math.ceil(_)+2,y=2*Math.ceil(g)+2,x=0;x<i;x++)for(var w=x*e.strides[0],k=0;k<a;k++)for(var C=w+k*e.strides[1],E=Math.floor(k*_),S=Math.floor(E-b/2),I=0;I<o;I++)for(var M=C+I*e.strides[2],T=Math.floor(I*g),D=Math.floor(T-y/2),R=0;R<s;R++){for(var P=0,O=0;O<b;O++){var L=O+S;if(!(L<0||L>=u)){var A=w+L*t.strides[1],N=L*m;if(k===Math.min(a-1,n?Math.round(N):Math.floor(N)))for(var B=0;B<y;B++){var j=B+D;if(!(j<0||j>=l)){var F=A+j*t.strides[2],Y=j*v;I===Math.min(o-1,n?Math.round(Y):Math.floor(Y))&&(P+=f[F+R])}}}}d[M+R]=P}return Pe(d,e.shape,e.dtype)},t.prototype.batchNormalization=function(t,e,n,r,i,a){this.assertNotComplex([t,e,n,i,a],"batchNorm");for(var o=t.dataSync(),s=e.dataSync(),c=n.dataSync(),u=i?i.dataSync():new Float32Array([1]),l=a?a.dataSync():new Float32Array([0]),d=new Float32Array(o.length),f=l.length,h=u.length,p=c.length,m=s.length,v=0,_=0,g=0,b=0,y=0;y<o.length;++y)d[y]=l[v++]+(o[y]-s[_++])*u[g++]/Math.sqrt(c[b++]+r),v>=f&&(v=0),_>=m&&(_=0),g>=h&&(g=0),b>=p&&(b=0);return Pe(d,t.shape)},t.prototype.localResponseNormalization4D=function(t,e,n,r,i){this.assertNotComplex(t,"localResponseNormalization4D");var a=t.shape[3],o=a-1,s=t.dataSync(),c=t.size,u=new Float32Array(c);function l(t){for(var n=t%a,r=t-n+Math.max(0,n-e),i=t-n+Math.min(n+e,o),c=0;r<=i;r++){var u=s[r];c+=u*u}return c}for(var d=0;d<c;d++){var f=l(d),h=s[d]*Math.pow(n+r*f,-i);u[d]=h}return Pe(u,t.shape)},t.prototype.LRNGrad=function(t,e,n,r,i,a,o){this.assertNotComplex(t,"LRNGrad");for(var s=t.shape[3],c=t.dataSync(),u=e.dataSync(),l=n.dataSync(),d=new Float32Array(t.size),f=t.size,h=0;h<f;h++){for(var p=h%s,m=h-p+Math.max(0,p-r),v=h-p+Math.min(s,p+r+1),_=0,g=m;g<v;g++)_+=Math.pow(u[g],2);for(_=a*_+i,g=m;g<v;g++){var b=-2*a*o*u[g]*l[h]/_;h===g&&(b+=Math.pow(_,-o)),b*=c[h],d[g]+=b}}return Pe(d,t.shape)},t.prototype.multinomial=function(t,e,n,r){this.assertNotComplex(t,"multinomial");for(var i=e?t:we(t),a=i.shape[0],o=i.shape[1],s=Le([a,n],"int32"),c=s.dataSync(),u=i.dataSync(),l=0;l<a;++l){var d=l*o,f=new Float32Array(o-1);f[0]=u[d];for(var h=1;h<f.length;++h)f[h]=f[h-1]+u[d+h];for(var p=Sa(r.toString()),m=l*n,v=0;v<n;++v){var _=p();c[m+v]=f.length;for(var g=0;g<f.length;g++)if(_<f[g]){c[m+v]=g;break}}}return s},t.prototype.oneHot=function(t,e,n,r){this.assertNotComplex(t,"oneHot");var i=new Float32Array(t.size*e);i.fill(r);for(var a=t.dataSync(),o=0;o<t.size;++o)a[o]>=0&&a[o]<e&&(i[o*e+a[o]]=n);return De(i,[t.size,e],"int32")},t.prototype.nonMaxSuppression=function(t,e,n,r,i){return this.assertNotComplex(t,"nonMaxSuppression"),We(t.dataSync(),e.dataSync(),n,r,i)},t.prototype.fft=function(t){return this.fftBatch(t,!1)},t.prototype.ifft=function(t){return this.fftBatch(t,!0)},t.prototype.fftBatch=function(t,e){for(var n=t.shape[0],r=t.shape[1],i=Ma(t.shape,"float32"),a=Ma(t.shape,"float32"),o=Ee(t).as2D(n,r),s=Se(t).as2D(n,r),c=0;c<n;c++)for(var u=o.slice([c,0],[1,r]),l=s.slice([c,0],[1,r]),d=Ce(u,l),f=this.fftImpl(d,e).dataSync(),h=0;h<r;h++){var p=Ve(f,h);i.values[c*r+h]=p.real,a.values[c*r+h]=p.imag}return Ce(i.toTensor(),a.toTensor()).as2D(n,r)},t.prototype.fftImpl=function(t,e){var n=t.as1D(),r=n.size;if(this.isExponentOf2(r)){var i=this.fftRadix2(n,r,e).as2D(t.shape[0],t.shape[1]);return e&&(i=Ce(Ee(i).div(Me(r)),Se(i).div(Me(r)))),i}var a=t.dataSync(),o=function(t){for(var e=new Float32Array(t.length/2),n=new Float32Array(t.length/2),r=0;r<t.length;r+=2)e[r/2]=t[r],n[r/2]=t[r+1];return{real:e,imag:n}}(this.fourierTransformByMatmul(a,r,e));return Ce(o.real,o.imag).as2D(t.shape[0],t.shape[1])},t.prototype.isExponentOf2=function(t){return 0==(t&t-1)},t.prototype.fftRadix2=function(t,e,n){if(1===e)return t;var r=t.dataSync(),i=e/2,a=function(t){for(var e=Math.ceil(t.length/4),n=new Float32Array(e),r=new Float32Array(e),i=0;i<t.length;i+=4)n[Math.floor(i/4)]=t[i],r[Math.floor(i/4)]=t[i+1];return{real:n,imag:r}}(r),o=Ce(a.real,a.imag).as1D(),s=function(t){for(var e=Math.floor(t.length/4),n=new Float32Array(e),r=new Float32Array(e),i=2;i<t.length;i+=4)n[Math.floor(i/4)]=t[i],r[Math.floor(i/4)]=t[i+1];return{real:n,imag:r}}(r),c=Ce(s.real,s.imag).as1D();o=this.fftRadix2(o,i,n),c=this.fftRadix2(c,i,n);var u=function(t,e){for(var n=new Float32Array(t/2),r=new Float32Array(t/2),i=0;i<Math.ceil(t/2);i++){var a=(e?2:-2)*Math.PI*(i/t);n[i]=Math.cos(a),r[i]=Math.sin(a)}return{real:n,imag:r}}(e,n),l=Ce(u.real,u.imag).mul(c),d=o.add(l),f=o.sub(l),h=Ee(d).concat(Ee(f)),p=Se(d).concat(Se(f));return Ce(h,p).as1D()},t.prototype.fourierTransformByMatmul=function(t,e,n){for(var r=new Float32Array(2*e),i=0;i<e;i++){for(var a=0,o=0,s=0;s<e;s++){var c=qe(i*s,e,n),u=Ve(t,s);a+=u.real*c.real-u.imag*c.imag,o+=u.real*c.imag+u.imag*c.real}n&&(a/=e,o/=e),He(r,a,o,i)}return r},t.prototype.depthToSpace=function(t,e,n){b("NHWC"===n,function(){return"Only NHWC dataFormat supported on CPU for depthToSpace. Got "+n}),b(e>1,function(){return"blockSize should be > 1 for depthToSpace, but was: "+e});for(var r=t.shape[0],i=t.shape[1],a=t.shape[2],o=t.shape[3],s=i*e,c=a*e,u=o/(e*e),l=t.dataSync(),d=new Float32Array(r*s*c*u),f=0,h=0;h<r;++h)for(var p=0;p<s;++p)for(var m=Math.floor(p/e),v=p%e,_=0;_<c;++_)for(var g=Math.floor(_/e),y=(v*e+_%e)*u,x=0;x<u;++x){var w=x+y+o*(g+a*(m+i*h));d[f++]=l[w]}return Pe(d,[r,s,c,u])},t.prototype.broadcastedBinaryOp=function(t,e,n,r){var i=en(t.shape,e.shape),a=Ma(i,n),o=t.dataSync(),s=e.dataSync(),c=Qe(t.shape,i),u=Qe(e.shape,i),l=a.values;if(c.length+u.length===0)for(var d=0;d<l.length;++d)l[d]=r(o[d%o.length],s[d%s.length]);else{var f=t.bufferSync(),h=e.bufferSync(),p=function(n){var i=a.indexToLoc(n),d=i.slice(-t.rank);c.forEach(function(t){return d[t]=0});var p=f.locToIndex(d),m=i.slice(-e.rank);u.forEach(function(t){return m[t]=0});var v=h.locToIndex(m);l[n]=r(o[p],s[v])};for(d=0;d<l.length;++d)p(d)}return a.toTensor()},t.prototype.broadcastedBinaryComplexOp=function(t,e,n){var r=en(t.shape,e.shape),i=Ma(r,"float32"),a=Ma(r,"float32"),o=t.dataSync(),s=e.dataSync(),c=Qe(t.shape,r),u=Qe(e.shape,r),l=i.values,d=a.values;if(c.length+u.length===0)for(var f=0;f<l.length;f++){var h=f%o.length,p=f%s.length,m=n(o[2*h],o[2*h+1],s[2*p],s[2*p+1]);l[f]=m.real,d[f]=m.imag}else{var v=this.data.get(t.dataId).complexTensors.real.bufferSync(),_=this.data.get(e.dataId).complexTensors.real.bufferSync(),g=function(r){var a=i.indexToLoc(r),f=a.slice(-t.rank);c.forEach(function(t){return f[t]=0});var h=v.locToIndex(f),p=a.slice(-e.rank);u.forEach(function(t){return p[t]=0});var m=_.locToIndex(p),g=n(o[2*h],o[2*h+1],s[2*m],s[2*m+1]);l[r]=g.real,d[r]=g.imag};for(f=0;f<l.length;f++)g(f)}return this.complex(i.toTensor(),a.toTensor())},t.prototype.split=function(t,e,n){return Ge(t,e,n)},t.prototype.dispose=function(){},t.prototype.floatPrecision=function(){return 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i=zt.engine.registeredVariables[n];null==r.accumulatedGrads[n]&&Gt(function(){e.accumulatedGrads[n]=je(i).variable(!1)}),null==r.accumulatedUpdates[n]&&Gt(function(){e.accumulatedUpdates[n]=je(i).variable(!1)});var a=t[n],o=r.accumulatedGrads[n],s=r.accumulatedUpdates[n];Gt(function(){var t=e.rhoScalar.mul(o).add(e.oneMinusRho.mul(a.square())),r=s.add(e.epsilonScalar).sqrt().div(o.add(e.epsilonScalar).sqrt()).mul(a),c=e.rhoScalar.mul(s).add(e.oneMinusRho.mul(r.square()));e.accumulatedGrads[n].assign(t),e.accumulatedUpdates[n].assign(c);var u=e.c.mul(r).add(i);i.assign(u)})},r=this;for(var i in t)n(i)},e.prototype.dispose=function(){var t=this;this.c.dispose(),this.epsilonScalar.dispose(),this.rhoScalar.dispose(),this.oneMinusRho.dispose(),null!=this.accumulatedUpdates&&(Object.keys(this.accumulatedUpdates).forEach(function(e){return t.accumulatedUpdates[e].dispose()}),Object.keys(this.accumulatedGrads).forEach(function(e){return t.accumulatedGrads[e].dispose()}))},e.prototype.getConfig=function(){return{learningRate:this.learningRate,rho:this.rho,epsilon:this.epsilon}},e.fromConfig=function(t,e){return new t(e.learningRate,e.rho,e.epsilon)},e.className="AdadeltaOptimizer",e}(Rl);Il(Pl);var Ol=function(t){function e(e,n){void 0===n&&(n=.1);var r=t.call(this)||this;return r.learningRate=e,r.initialAccumulatorValue=n,r.accumulatedGrads={},r.c=Kt(Me(-e)),r.epsilon=Kt(Me(zt.get("EPSILON"))),r}return s(e,t),e.prototype.applyGradients=function(t){var e=this,n=function(n){var i=zt.engine.registeredVariables[n];null==r.accumulatedGrads[n]&&Gt(function(){e.accumulatedGrads[n]=Ae(i.shape,e.initialAccumulatorValue).variable(!1)});var a=t[n],o=r.accumulatedGrads[n];Gt(function(){var t=o.add(a.square());e.accumulatedGrads[n].assign(t);var r=e.c.mul(a.div(t.add(e.epsilon).sqrt())).add(i);i.assign(r)})},r=this;for(var i in t)n(i)},e.prototype.dispose=function(){var t=this;this.epsilon.dispose(),this.c.dispose(),null!=this.accumulatedGrads&&Object.keys(this.accumulatedGrads).forEach(function(e){return t.accumulatedGrads[e].dispose()})},e.prototype.getConfig=function(){return{learningRate:this.learningRate,initialAccumulatorValue:this.initialAccumulatorValue}},e.fromConfig=function(t,e){return new t(e.learningRate,e.initialAccumulatorValue)},e.className="AdagradOptimizer",e}(Rl);Il(Ol);var Ll=function(t){function e(e,n,r,i){void 0===i&&(i=null);var a=t.call(this)||this;return a.learningRate=e,a.beta1=n,a.beta2=r,a.epsilon=i,a.accumulatedFirstMoment={},a.accumulatedSecondMoment={},a.c=Kt(Me(-e)),a.beta1Scalar=Kt(Me(n)),a.beta2Scalar=Kt(Me(r)),Gt(function(){a.accBeta1=Me(n).variable(),a.accBeta2=Me(r).variable()}),a.oneMinusBeta1=Kt(Me(1-n)),a.oneMinusBeta2=Kt(Me(1-r)),a.one=Kt(Me(1)),null===i&&(i=zt.get("EPSILON")),a.epsScalar=Kt(Me(i)),a}return s(e,t),e.prototype.applyGradients=function(t){var e=this;Gt(function(){var n=e.one.sub(e.accBeta1),r=e.one.sub(e.accBeta2);for(var i in t){var a=zt.engine.registeredVariables[i];if(null==e.accumulatedFirstMoment[i]){var o=!1;e.accumulatedFirstMoment[i]=je(a).variable(o)}null==e.accumulatedSecondMoment[i]&&(o=!1,e.accumulatedSecondMoment[i]=je(a).variable(o));var s=t[i],c=e.accumulatedFirstMoment[i],u=e.accumulatedSecondMoment[i],l=e.beta1Scalar.mul(c).add(e.oneMinusBeta1.mul(s)),d=e.beta2Scalar.mul(u).add(e.oneMinusBeta2.mul(s.square())),f=l.div(n),h=d.div(r);e.accumulatedFirstMoment[i].assign(l),e.accumulatedSecondMoment[i].assign(d);var p=e.c.mul(f.div(e.epsScalar.add(h.sqrt()))).add(a);a.assign(p)}e.accBeta1.assign(e.accBeta1.mul(e.beta1Scalar)),e.accBeta2.assign(e.accBeta2.mul(e.beta2Scalar))})},e.prototype.dispose=function(){var t=this;this.c.dispose(),this.epsScalar.dispose(),this.beta1Scalar.dispose(),this.beta2Scalar.dispose(),this.accBeta1.dispose(),this.accBeta2.dispose(),this.oneMinusBeta1.dispose(),this.oneMinusBeta2.dispose(),this.one.dispose(),null!=this.accumulatedFirstMoment&&Object.keys(this.accumulatedFirstMoment).forEach(function(e){return t.accumulatedFirstMoment[e].dispose()}),null!=this.accumulatedSecondMoment&&Object.keys(this.accumulatedSecondMoment).forEach(function(e){return t.accumulatedSecondMoment[e].dispose()})},e.prototype.getConfig=function(){return{learningRate:this.learningRate,beta1:this.beta1,beta2:this.beta2,epsilon:this.epsilon}},e.fromConfig=function(t,e){return new t(e.learningRate,e.beta1,e.beta2,e.epsilon)},e.className="AdamOptimizer",e}(Rl);Il(Ll);var Al=function(t){function e(e,n,r,i,a){void 0===i&&(i=null),void 0===a&&(a=0);var o=t.call(this)||this;return o.learningRate=e,o.beta1=n,o.beta2=r,o.epsilon=i,o.decay=a,o.accumulatedFirstMoment={},o.accumulatedWeightedInfNorm={},o.c=Kt(Me(-e)),o.beta1Scalar=Kt(Me(n)),o.beta2Scalar=Kt(Me(r)),o.decayScalar=Kt(Me(a)),Gt(function(){o.iteration=Me(0).variable(),o.accBeta1=Me(n).variable()}),o.oneMinusBeta1=Kt(Me(1-n)),o.one=Kt(Me(1)),null===i&&(i=zt.get("EPSILON")),o.epsScalar=Kt(Me(i)),o}return s(e,t),e.prototype.applyGradients=function(t){var e=this;Gt(function(){var n=e.one.sub(e.accBeta1),r=e.c.div(e.one.add(e.decayScalar.mul(e.iteration)));for(var i in t){var a=zt.engine.registeredVariables[i];if(null==e.accumulatedFirstMoment[i]){var o=!1;e.accumulatedFirstMoment[i]=je(a).variable(o)}null==e.accumulatedWeightedInfNorm[i]&&(o=!1,e.accumulatedWeightedInfNorm[i]=je(a).variable(o));var s=t[i],c=e.accumulatedFirstMoment[i],u=e.accumulatedWeightedInfNorm[i],l=e.beta1Scalar.mul(c).add(e.oneMinusBeta1.mul(s)),d=e.beta2Scalar.mul(u),f=s.abs(),h=d.maximum(f);e.accumulatedFirstMoment[i].assign(l),e.accumulatedWeightedInfNorm[i].assign(h);var p=r.div(n).mul(l.div(e.epsScalar.add(h))).add(a);a.assign(p)}e.iteration.assign(e.iteration.add(e.one)),e.accBeta1.assign(e.accBeta1.mul(e.beta1Scalar))})},e.prototype.dispose=function(){var t=this;this.c.dispose(),this.epsScalar.dispose(),this.accBeta1.dispose(),this.beta1Scalar.dispose(),this.beta2Scalar.dispose(),this.oneMinusBeta1.dispose(),this.decayScalar.dispose(),this.iteration.dispose(),this.one.dispose(),null!=this.accumulatedFirstMoment&&Object.keys(this.accumulatedFirstMoment).forEach(function(e){return t.accumulatedFirstMoment[e].dispose()}),null!=this.accumulatedWeightedInfNorm&&Object.keys(this.accumulatedWeightedInfNorm).forEach(function(e){return t.accumulatedWeightedInfNorm[e].dispose()})},e.prototype.getConfig=function(){return{learningRate:this.learningRate,beta1:this.beta1,beta2:this.beta2,epsilon:this.epsilon,decay:this.decay}},e.fromConfig=function(t,e){return new t(e.learningRate,e.beta1,e.beta2,e.epsilon,e.decay)},e.className="AdamaxOptimizer",e}(Rl);Il(Al);var Nl=function(t){function e(e){var n=t.call(this)||this;return n.learningRate=e,n.setLearningRate(e),n}return s(e,t),e.prototype.applyGradients=function(t){var e=this;Object.keys(t).forEach(function(n){var r=t[n],i=zt.engine.registeredVariables[n];Gt(function(){var t=e.c.mul(r).add(i);i.assign(t)})})},e.prototype.setLearningRate=function(t){this.learningRate=t,null!=this.c&&this.c.dispose(),this.c=Kt(Me(-t))},e.prototype.dispose=function(){this.c.dispose()},e.prototype.getConfig=function(){return{learningRate:this.learningRate}},e.fromConfig=function(t,e){return new t(e.learningRate)},e.className="SGDOptimizer",e}(Rl);Il(Nl);var Bl=function(t){function e(e,n,r){void 0===r&&(r=!1);var i=t.call(this,e)||this;return i.learningRate=e,i.momentum=n,i.useNesterov=r,i.m=Me(i.momentum),i.accumulations={},i}return s(e,t),e.prototype.applyGradients=function(t){var e=this,n=function(n){var i=zt.engine.registeredVariables[n];null==r.accumulations[n]&&Gt(function(){e.accumulations[n]=je(i).variable(!1)});var a=r.accumulations[n],o=t[n];Gt(function(){var t,r=e.m.mul(a).add(o);t=e.useNesterov?e.c.mul(o.add(r.mul(e.m))).add(i):e.c.mul(r).add(i),e.accumulations[n].assign(r),i.assign(t)})},r=this;for(var i in t)n(i)},e.prototype.dispose=function(){if(t.prototype.dispose.call(this),this.m.dispose(),null!=this.accumulations)for(var e in this.accumulations)this.accumulations[e].dispose()},e.prototype.setMomentum=function(t){this.momentum=t},e.prototype.getConfig=function(){return{learningRate:this.learningRate,momentum:this.momentum,useNesterov:this.useNesterov}},e.fromConfig=function(t,e){return new t(e.learningRate,e.momentum,e.useNesterov)},e.className="MomentumOptimizer",e}(Nl);Il(Bl);var jl=function(t){function e(e,n,r,i,a){void 0===n&&(n=.9),void 0===r&&(r=0),void 0===i&&(i=null),void 0===a&&(a=!1);var o=t.call(this)||this;return o.learningRate=e,o.decay=n,o.momentum=r,o.epsilon=i,o.accumulatedMeanSquares={},o.accumulatedMeanGrads={},o.accumulatedMoments={},o.c=Kt(Me(e)),o.decayScalar=Kt(Me(n)),o.momentumScalar=Kt(Me(r)),o.oneMinusDecay=Kt(Me(1-n)),o.centered=a,null===i&&(i=zt.get("EPSILON")),o.epsilonScalar=Kt(Me(i)),o}return s(e,t),e.prototype.applyGradients=function(t){var e=this,n=function(n){var i=zt.engine.registeredVariables[n];null==r.accumulatedMeanSquares[n]&&Gt(function(){e.accumulatedMeanSquares[n]=je(i).variable(!1)}),null==r.accumulatedMeanGrads[n]&&r.centered&&Gt(function(){e.accumulatedMeanGrads[n]=je(i).variable(!1)}),null==r.accumulatedMoments[n]&&Gt(function(){e.accumulatedMoments[n]=je(i).variable(!1)});var a=r.accumulatedMeanSquares[n],o=r.accumulatedMeanGrads[n],s=r.accumulatedMoments[n],c=t[n];Gt(function(){var t=e.decayScalar.mul(a).add(e.oneMinusDecay.mul(c.square()));if(e.centered){var r=e.decayScalar.mul(o).add(e.oneMinusDecay.mul(c)),u=e.momentumScalar.mul(s).add(e.c.mul(c).div(t.sub(r.square().add(e.epsilonScalar)).sqrt()));e.accumulatedMeanSquares[n].assign(t),e.accumulatedMeanGrads[n].assign(r),e.accumulatedMoments[n].assign(u);var l=i.sub(u);i.assign(l)}else{var d=e.decayScalar.mul(a).add(e.oneMinusDecay.mul(c.square()));u=e.momentumScalar.mul(s).add(e.c.mul(c).div(d.add(e.epsilonScalar).sqrt())),e.accumulatedMeanSquares[n].assign(d),e.accumulatedMoments[n].assign(u),l=i.sub(u),i.assign(l)}})},r=this;for(var i in t)n(i)},e.prototype.dispose=function(){var 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yt=(u+(r=r+Math.imul(d,Q)|0)|0)+((8191&(i=(i=i+Math.imul(d,tt)|0)+Math.imul(f,Q)|0))<<13)|0;u=((a=a+Math.imul(f,tt)|0)+(i>>>13)|0)+(yt>>>26)|0,yt&=67108863,r=Math.imul(S,$),i=(i=Math.imul(S,z))+Math.imul(I,$)|0,a=Math.imul(I,z),r=r+Math.imul(k,H)|0,i=(i=i+Math.imul(k,q)|0)+Math.imul(C,H)|0,a=a+Math.imul(C,q)|0,r=r+Math.imul(y,U)|0,i=(i=i+Math.imul(y,G)|0)+Math.imul(x,U)|0,a=a+Math.imul(x,G)|0,r=r+Math.imul(_,X)|0,i=(i=i+Math.imul(_,J)|0)+Math.imul(g,X)|0,a=a+Math.imul(g,J)|0,r=r+Math.imul(p,Q)|0,i=(i=i+Math.imul(p,tt)|0)+Math.imul(m,Q)|0,a=a+Math.imul(m,tt)|0;var 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wt=(u+(r=r+Math.imul(d,at)|0)|0)+((8191&(i=(i=i+Math.imul(d,ot)|0)+Math.imul(f,at)|0))<<13)|0;u=((a=a+Math.imul(f,ot)|0)+(i>>>13)|0)+(wt>>>26)|0,wt&=67108863,r=Math.imul(P,$),i=(i=Math.imul(P,z))+Math.imul(O,$)|0,a=Math.imul(O,z),r=r+Math.imul(T,H)|0,i=(i=i+Math.imul(T,q)|0)+Math.imul(D,H)|0,a=a+Math.imul(D,q)|0,r=r+Math.imul(S,U)|0,i=(i=i+Math.imul(S,G)|0)+Math.imul(I,U)|0,a=a+Math.imul(I,G)|0,r=r+Math.imul(k,X)|0,i=(i=i+Math.imul(k,J)|0)+Math.imul(C,X)|0,a=a+Math.imul(C,J)|0,r=r+Math.imul(y,Q)|0,i=(i=i+Math.imul(y,tt)|0)+Math.imul(x,Q)|0,a=a+Math.imul(x,tt)|0,r=r+Math.imul(_,nt)|0,i=(i=i+Math.imul(_,rt)|0)+Math.imul(g,nt)|0,a=a+Math.imul(g,rt)|0,r=r+Math.imul(p,at)|0,i=(i=i+Math.imul(p,ot)|0)+Math.imul(m,at)|0,a=a+Math.imul(m,ot)|0;var 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Et=(u+(r=r+Math.imul(d,pt)|0)|0)+((8191&(i=(i=i+Math.imul(d,mt)|0)+Math.imul(f,pt)|0))<<13)|0;u=((a=a+Math.imul(f,mt)|0)+(i>>>13)|0)+(Et>>>26)|0,Et&=67108863,r=Math.imul(j,H),i=(i=Math.imul(j,q))+Math.imul(F,H)|0,a=Math.imul(F,q),r=r+Math.imul(A,U)|0,i=(i=i+Math.imul(A,G)|0)+Math.imul(N,U)|0,a=a+Math.imul(N,G)|0,r=r+Math.imul(P,X)|0,i=(i=i+Math.imul(P,J)|0)+Math.imul(O,X)|0,a=a+Math.imul(O,J)|0,r=r+Math.imul(T,Q)|0,i=(i=i+Math.imul(T,tt)|0)+Math.imul(D,Q)|0,a=a+Math.imul(D,tt)|0,r=r+Math.imul(S,nt)|0,i=(i=i+Math.imul(S,rt)|0)+Math.imul(I,nt)|0,a=a+Math.imul(I,rt)|0,r=r+Math.imul(k,at)|0,i=(i=i+Math.imul(k,ot)|0)+Math.imul(C,at)|0,a=a+Math.imul(C,ot)|0,r=r+Math.imul(y,ct)|0,i=(i=i+Math.imul(y,ut)|0)+Math.imul(x,ct)|0,a=a+Math.imul(x,ut)|0,r=r+Math.imul(_,dt)|0,i=(i=i+Math.imul(_,ft)|0)+Math.imul(g,dt)|0,a=a+Math.imul(g,ft)|0;var St=(u+(r=r+Math.imul(p,pt)|0)|0)+((8191&(i=(i=i+Math.imul(p,mt)|0)+Math.imul(m,pt)|0))<<13)|0;u=((a=a+Math.imul(m,mt)|0)+(i>>>13)|0)+(St>>>26)|0,St&=67108863,r=Math.imul(j,U),i=(i=Math.imul(j,G))+Math.imul(F,U)|0,a=Math.imul(F,G),r=r+Math.imul(A,X)|0,i=(i=i+Math.imul(A,J)|0)+Math.imul(N,X)|0,a=a+Math.imul(N,J)|0,r=r+Math.imul(P,Q)|0,i=(i=i+Math.imul(P,tt)|0)+Math.imul(O,Q)|0,a=a+Math.imul(O,tt)|0,r=r+Math.imul(T,nt)|0,i=(i=i+Math.imul(T,rt)|0)+Math.imul(D,nt)|0,a=a+Math.imul(D,rt)|0,r=r+Math.imul(S,at)|0,i=(i=i+Math.imul(S,ot)|0)+Math.imul(I,at)|0,a=a+Math.imul(I,ot)|0,r=r+Math.imul(k,ct)|0,i=(i=i+Math.imul(k,ut)|0)+Math.imul(C,ct)|0,a=a+Math.imul(C,ut)|0,r=r+Math.imul(y,dt)|0,i=(i=i+Math.imul(y,ft)|0)+Math.imul(x,dt)|0,a=a+Math.imul(x,ft)|0;var It=(u+(r=r+Math.imul(_,pt)|0)|0)+((8191&(i=(i=i+Math.imul(_,mt)|0)+Math.imul(g,pt)|0))<<13)|0;u=((a=a+Math.imul(g,mt)|0)+(i>>>13)|0)+(It>>>26)|0,It&=67108863,r=Math.imul(j,X),i=(i=Math.imul(j,J))+Math.imul(F,X)|0,a=Math.imul(F,J),r=r+Math.imul(A,Q)|0,i=(i=i+Math.imul(A,tt)|0)+Math.imul(N,Q)|0,a=a+Math.imul(N,tt)|0,r=r+Math.imul(P,nt)|0,i=(i=i+Math.imul(P,rt)|0)+Math.imul(O,nt)|0,a=a+Math.imul(O,rt)|0,r=r+Math.imul(T,at)|0,i=(i=i+Math.imul(T,ot)|0)+Math.imul(D,at)|0,a=a+Math.imul(D,ot)|0,r=r+Math.imul(S,ct)|0,i=(i=i+Math.imul(S,ut)|0)+Math.imul(I,ct)|0,a=a+Math.imul(I,ut)|0,r=r+Math.imul(k,dt)|0,i=(i=i+Math.imul(k,ft)|0)+Math.imul(C,dt)|0,a=a+Math.imul(C,ft)|0;var Mt=(u+(r=r+Math.imul(y,pt)|0)|0)+((8191&(i=(i=i+Math.imul(y,mt)|0)+Math.imul(x,pt)|0))<<13)|0;u=((a=a+Math.imul(x,mt)|0)+(i>>>13)|0)+(Mt>>>26)|0,Mt&=67108863,r=Math.imul(j,Q),i=(i=Math.imul(j,tt))+Math.imul(F,Q)|0,a=Math.imul(F,tt),r=r+Math.imul(A,nt)|0,i=(i=i+Math.imul(A,rt)|0)+Math.imul(N,nt)|0,a=a+Math.imul(N,rt)|0,r=r+Math.imul(P,at)|0,i=(i=i+Math.imul(P,ot)|0)+Math.imul(O,at)|0,a=a+Math.imul(O,ot)|0,r=r+Math.imul(T,ct)|0,i=(i=i+Math.imul(T,ut)|0)+Math.imul(D,ct)|0,a=a+Math.imul(D,ut)|0,r=r+Math.imul(S,dt)|0,i=(i=i+Math.imul(S,ft)|0)+Math.imul(I,dt)|0,a=a+Math.imul(I,ft)|0;var Tt=(u+(r=r+Math.imul(k,pt)|0)|0)+((8191&(i=(i=i+Math.imul(k,mt)|0)+Math.imul(C,pt)|0))<<13)|0;u=((a=a+Math.imul(C,mt)|0)+(i>>>13)|0)+(Tt>>>26)|0,Tt&=67108863,r=Math.imul(j,nt),i=(i=Math.imul(j,rt))+Math.imul(F,nt)|0,a=Math.imul(F,rt),r=r+Math.imul(A,at)|0,i=(i=i+Math.imul(A,ot)|0)+Math.imul(N,at)|0,a=a+Math.imul(N,ot)|0,r=r+Math.imul(P,ct)|0,i=(i=i+Math.imul(P,ut)|0)+Math.imul(O,ct)|0,a=a+Math.imul(O,ut)|0,r=r+Math.imul(T,dt)|0,i=(i=i+Math.imul(T,ft)|0)+Math.imul(D,dt)|0,a=a+Math.imul(D,ft)|0;var Dt=(u+(r=r+Math.imul(S,pt)|0)|0)+((8191&(i=(i=i+Math.imul(S,mt)|0)+Math.imul(I,pt)|0))<<13)|0;u=((a=a+Math.imul(I,mt)|0)+(i>>>13)|0)+(Dt>>>26)|0,Dt&=67108863,r=Math.imul(j,at),i=(i=Math.imul(j,ot))+Math.imul(F,at)|0,a=Math.imul(F,ot),r=r+Math.imul(A,ct)|0,i=(i=i+Math.imul(A,ut)|0)+Math.imul(N,ct)|0,a=a+Math.imul(N,ut)|0,r=r+Math.imul(P,dt)|0,i=(i=i+Math.imul(P,ft)|0)+Math.imul(O,dt)|0,a=a+Math.imul(O,ft)|0;var Rt=(u+(r=r+Math.imul(T,pt)|0)|0)+((8191&(i=(i=i+Math.imul(T,mt)|0)+Math.imul(D,pt)|0))<<13)|0;u=((a=a+Math.imul(D,mt)|0)+(i>>>13)|0)+(Rt>>>26)|0,Rt&=67108863,r=Math.imul(j,ct),i=(i=Math.imul(j,ut))+Math.imul(F,ct)|0,a=Math.imul(F,ut),r=r+Math.imul(A,dt)|0,i=(i=i+Math.imul(A,ft)|0)+Math.imul(N,dt)|0,a=a+Math.imul(N,ft)|0;var Pt=(u+(r=r+Math.imul(P,pt)|0)|0)+((8191&(i=(i=i+Math.imul(P,mt)|0)+Math.imul(O,pt)|0))<<13)|0;u=((a=a+Math.imul(O,mt)|0)+(i>>>13)|0)+(Pt>>>26)|0,Pt&=67108863,r=Math.imul(j,dt),i=(i=Math.imul(j,ft))+Math.imul(F,dt)|0,a=Math.imul(F,ft);var Ot=(u+(r=r+Math.imul(A,pt)|0)|0)+((8191&(i=(i=i+Math.imul(A,mt)|0)+Math.imul(N,pt)|0))<<13)|0;u=((a=a+Math.imul(N,mt)|0)+(i>>>13)|0)+(Ot>>>26)|0,Ot&=67108863;var Lt=(u+(r=Math.imul(j,pt))|0)+((8191&(i=(i=Math.imul(j,mt))+Math.imul(F,pt)|0))<<13)|0;return u=((a=Math.imul(F,mt))+(i>>>13)|0)+(Lt>>>26)|0,Lt&=67108863,c[0]=vt,c[1]=_t,c[2]=gt,c[3]=bt,c[4]=yt,c[5]=xt,c[6]=wt,c[7]=kt,c[8]=Ct,c[9]=Et,c[10]=St,c[11]=It,c[12]=Mt,c[13]=Tt,c[14]=Dt,c[15]=Rt,c[16]=Pt,c[17]=Ot,c[18]=Lt,0!==u&&(c[19]=u,n.length++),n};function p(t,e,n){return(new m).mulp(t,e,n)}function m(t,e){this.x=t,this.y=e}Math.imul||(h=f),a.prototype.mulTo=function(t,e){var n=this.length+t.length;return 10===this.length&&10===t.length?h(this,t,e):n<63?f(this,t,e):n<1024?function(t,e,n){n.negative=e.negative^t.negative,n.length=t.length+e.length;for(var r=0,i=0,a=0;a<n.length-1;a++){var o=i;i=0;for(var s=67108863&r,c=Math.min(a,e.length-1),u=Math.max(0,a-t.length+1);u<=c;u++){var l=a-u,d=(0|t.words[l])*(0|e.words[u]),f=67108863&d;s=67108863&(f=f+s|0),i+=(o=(o=o+(d/67108864|0)|0)+(f>>>26)|0)>>>26,o&=67108863}n.words[a]=s,r=o,o=i}return 0!==r?n.words[a]=r:n.length--,n.strip()}(this,t,e):p(this,t,e)},m.prototype.makeRBT=function(t){for(var e=new 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i=8192*Math.round(t[2*r+1]/e)+Math.round(t[2*r]/e)+n;t[r]=67108863&i,n=i<67108864?0:i/67108864|0}return t},m.prototype.convert13b=function(t,e,n,i){for(var a=0,o=0;o<e;o++)a+=0|t[o],n[2*o]=8191&a,a>>>=13,n[2*o+1]=8191&a,a>>>=13;for(o=2*e;o<i;++o)n[o]=0;r(0===a),r(0==(-8192&a))},m.prototype.stub=function(t){for(var e=new Array(t),n=0;n<t;n++)e[n]=0;return e},m.prototype.mulp=function(t,e,n){var r=2*this.guessLen13b(t.length,e.length),i=this.makeRBT(r),a=this.stub(r),o=new Array(r),s=new Array(r),c=new Array(r),u=new Array(r),l=new Array(r),d=new Array(r),f=n.words;f.length=r,this.convert13b(t.words,t.length,o,r),this.convert13b(e.words,e.length,u,r),this.transform(o,a,s,c,r,i),this.transform(u,a,l,d,r,i);for(var h=0;h<r;h++){var p=s[h]*l[h]-c[h]*d[h];c[h]=s[h]*d[h]+c[h]*l[h],s[h]=p}return this.conjugate(s,c,r),this.transform(s,c,f,a,r,i),this.conjugate(f,a,r),this.normalize13b(f,r),n.negative=t.negative^e.negative,n.length=t.length+e.length,n.strip()},a.prototype.mul=function(t){var e=new a(null);return e.words=new Array(this.length+t.length),this.mulTo(t,e)},a.prototype.mulf=function(t){var e=new a(null);return e.words=new Array(this.length+t.length),p(this,t,e)},a.prototype.imul=function(t){return this.clone().mulTo(t,this)},a.prototype.imuln=function(t){r("number"==typeof t),r(t<67108864);for(var e=0,n=0;n<this.length;n++){var i=(0|this.words[n])*t,a=(67108863&i)+(67108863&e);e>>=26,e+=i/67108864|0,e+=a>>>26,this.words[n]=67108863&a}return 0!==e&&(this.words[n]=e,this.length++),this},a.prototype.muln=function(t){return this.clone().imuln(t)},a.prototype.sqr=function(){return this.mul(this)},a.prototype.isqr=function(){return this.imul(this.clone())},a.prototype.pow=function(t){var e=function(t){for(var e=new Array(t.bitLength()),n=0;n<e.length;n++){var r=n/26|0,i=n%26;e[n]=(t.words[r]&1<<i)>>>i}return e}(t);if(0===e.length)return new a(1);for(var n=this,r=0;r<e.length&&0===e[r];r++,n=n.sqr());if(++r<e.length)for(var 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d=0|this.words[u];this.words[u]=l<<26-a|d>>>a,l=d&s}return c&&0!==l&&(c.words[c.length++]=l),0===this.length&&(this.words[0]=0,this.length=1),this.strip()},a.prototype.ishrn=function(t,e,n){return r(0===this.negative),this.iushrn(t,e,n)},a.prototype.shln=function(t){return this.clone().ishln(t)},a.prototype.ushln=function(t){return this.clone().iushln(t)},a.prototype.shrn=function(t){return this.clone().ishrn(t)},a.prototype.ushrn=function(t){return this.clone().iushrn(t)},a.prototype.testn=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26,i=1<<e;return!(this.length<=n)&&!!(this.words[n]&i)},a.prototype.imaskn=function(t){r("number"==typeof t&&t>=0);var e=t%26,n=(t-e)/26;if(r(0===this.negative,"imaskn works only with positive numbers"),this.length<=n)return this;if(0!==e&&n++,this.length=Math.min(n,this.length),0!==e){var i=67108863^67108863>>>e<<e;this.words[this.length-1]&=i}return this.strip()},a.prototype.maskn=function(t){return this.clone().imaskn(t)},a.prototype.iaddn=function(t){return r("number"==typeof t),r(t<67108864),t<0?this.isubn(-t):0!==this.negative?1===this.length&&(0|this.words[0])<t?(this.words[0]=t-(0|this.words[0]),this.negative=0,this):(this.negative=0,this.isubn(t),this.negative=1,this):this._iaddn(t)},a.prototype._iaddn=function(t){this.words[0]+=t;for(var e=0;e<this.length&&this.words[e]>=67108864;e++)this.words[e]-=67108864,e===this.length-1?this.words[e+1]=1:this.words[e+1]++;return this.length=Math.max(this.length,e+1),this},a.prototype.isubn=function(t){if(r("number"==typeof t),r(t<67108864),t<0)return this.iaddn(-t);if(0!==this.negative)return this.negative=0,this.iaddn(t),this.negative=1,this;if(this.words[0]-=t,1===this.length&&this.words[0]<0)this.words[0]=-this.words[0],this.negative=1;else for(var e=0;e<this.length&&this.words[e]<0;e++)this.words[e]+=67108864,this.words[e+1]-=1;return this.strip()},a.prototype.addn=function(t){return this.clone().iaddn(t)},a.prototype.subn=function(t){return this.clone().isubn(t)},a.prototype.iabs=function(){return this.negative=0,this},a.prototype.abs=function(){return this.clone().iabs()},a.prototype._ishlnsubmul=function(t,e,n){var i,a,o=t.length+n;this._expand(o);var s=0;for(i=0;i<t.length;i++){a=(0|this.words[i+n])+s;var c=(0|t.words[i])*e;s=((a-=67108863&c)>>26)-(c/67108864|0),this.words[i+n]=67108863&a}for(;i<this.length-n;i++)s=(a=(0|this.words[i+n])+s)>>26,this.words[i+n]=67108863&a;if(0===s)return this.strip();for(r(-1===s),s=0,i=0;i<this.length;i++)s=(a=-(0|this.words[i])+s)>>26,this.words[i]=67108863&a;return this.negative=1,this.strip()},a.prototype._wordDiv=function(t,e){var n=(this.length,t.length),r=this.clone(),i=t,o=0|i.words[i.length-1];0!==(n=26-this._countBits(o))&&(i=i.ushln(n),r.iushln(n),o=0|i.words[i.length-1]);var s,c=r.length-i.length;if("mod"!==e){(s=new a(null)).length=c+1,s.words=new Array(s.length);for(var u=0;u<s.length;u++)s.words[u]=0}var l=r.clone()._ishlnsubmul(i,1,c);0===l.negative&&(r=l,s&&(s.words[c]=1));for(var d=c-1;d>=0;d--){var f=67108864*(0|r.words[i.length+d])+(0|r.words[i.length+d-1]);for(f=Math.min(f/o|0,67108863),r._ishlnsubmul(i,f,d);0!==r.negative;)f--,r.negative=0,r._ishlnsubmul(i,1,d),r.isZero()||(r.negative^=1);s&&(s.words[d]=f)}return s&&s.strip(),r.strip(),"div"!==e&&0!==n&&r.iushrn(n),{div:s||null,mod:r}},a.prototype.divmod=function(t,e,n){return r(!t.isZero()),this.isZero()?{div:new a(0),mod:new a(0)}:0!==this.negative&&0===t.negative?(s=this.neg().divmod(t,e),"mod"!==e&&(i=s.div.neg()),"div"!==e&&(o=s.mod.neg(),n&&0!==o.negative&&o.iadd(t)),{div:i,mod:o}):0===this.negative&&0!==t.negative?(s=this.divmod(t.neg(),e),"mod"!==e&&(i=s.div.neg()),{div:i,mod:s.mod}):0!=(this.negative&t.negative)?(s=this.neg().divmod(t.neg(),e),"div"!==e&&(o=s.mod.neg(),n&&0!==o.negative&&o.isub(t)),{div:s.div,mod:o}):t.length>this.length||this.cmp(t)<0?{div:new 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"+this.options.dictFallbackText+"

A timestamp was disclosed by the application/web server - Unix

Manually confirm that the timestamp data is not sensitive, and that the data cannot be aggregated to disclose exploitable patterns.

344077627, which evaluates to: 1980-11-26 05:07:07

https://www.owasp.org/index.php/Top_10_2013-A6-Sensitive_Data_Exposure

http://projects.webappsec.org/w/page/13246936/Information%20Leakage

A timestamp was disclosed by the application/web server - Unix

Manually confirm that the timestamp data is not sensitive, and that the data cannot be aggregated to disclose exploitable patterns.

1594235398, which evaluates to: 2020-07-08 15:09:58

https://www.owasp.org/index.php/Top_10_2013-A6-Sensitive_Data_Exposure

http://projects.webappsec.org/w/page/13246936/Information%20Leakage

A timestamp was disclosed by the application/web server - Unix

Manually confirm that the timestamp data is not sensitive, and that the data cannot be aggregated to disclose exploitable patterns.

20012235, which evaluates to: 1970-08-20 10:57:15

https://www.owasp.org/index.php/Top_10_2013-A6-Sensitive_Data_Exposure

http://projects.webappsec.org/w/page/13246936/Information%20Leakage

A timestamp was disclosed by the application/web server - Unix

Manually confirm that the timestamp data is not sensitive, and that the data cannot be aggregated to disclose exploitable patterns.

1494877265, which evaluates to: 2017-05-15 15:41:05

https://www.owasp.org/index.php/Top_10_2013-A6-Sensitive_Data_Exposure

http://projects.webappsec.org/w/page/13246936/Information%20Leakage