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| <refentry> |
| <refentryinfo> |
| <keywordset> |
| <keyword> |
| cl_khr_fp16 |
| </keyword> |
| </keywordset> |
| </refentryinfo> |
| |
| <refmeta> |
| <refentrytitle>cl_khr_fp16</refentrytitle> |
| |
| <refmiscinfo> |
| <copyright> |
| <year>2007-2009</year> |
| <holder>The Khronos Group Inc. |
| Permission is hereby granted, free of charge, to any person obtaining a |
| copy of this software and/or associated documentation files (the |
| "Materials"), to deal in the Materials without restriction, including |
| without limitation the rights to use, copy, modify, merge, publish, |
| distribute, sublicense, and/or sell copies of the Materials, and to |
| permit persons to whom the Materials are furnished to do so, subject to |
| the condition that this copyright notice and permission notice shall be included |
| in all copies or substantial portions of the Materials.</holder> |
| </copyright> |
| </refmiscinfo> |
| <manvolnum>2</manvolnum> |
| </refmeta> |
| |
| <!-- ================================ SYNOPSIS --> |
| |
| <refnamediv id="cl_khr_fp16"> |
| <refname>cl_khr_fp16</refname> |
| |
| <refpurpose> |
| Optional half floating-point support. |
| </refpurpose> |
| </refnamediv> |
| |
| <refsect2 id="synopsis"> |
| <title> |
| </title> |
| |
| <informaltable frame="none"> |
| <tgroup cols="1" align="left" colsep="0" rowsep="0"> |
| <colspec colname="col1" colnum="1" /> |
| <tbody> |
| <row> |
| <entry> |
| #pragma OPENCL EXTENSION cl_khr_fp16 : enable |
| </entry> |
| </row> |
| </tbody> |
| </tgroup> |
| </informaltable> |
| </refsect2> |
| |
| |
| <!-- ================================ DESCRIPTION --> |
| |
| <refsect1 id="description"><title>Description</title> |
| <para> |
| OpenCL 1.0 supports half as a storage format only in the core specification. This extension adds |
| support for half scalar and vector types as built-in types that can be used for arithmetic |
| operations, conversions etc. An application that wants to use <type>half</type> and <constant>halfn</constant> types will need |
| to include the directive shown above. |
| The list of built-in scalar, and vector data types defined in tables 6.1, and 6.2 are extended to |
| include the types in the table below. |
| </para> |
| |
| <para> |
| The built-in vector data types for <constant>halfn</constant> are also declared as appropriate types in the OpenCL |
| API (and header files) that can be used by an application. The following table describes the |
| built-in vector data types for <constant>halfn</constant> as defined in the OpenCL C programming language and the |
| corresponding data type available to the application: |
| |
| <informaltable frame="all"> |
| <tgroup cols="2" align="left" colsep="1" rowsep="1"> |
| <colspec colname="col1" colnum="1" /> |
| <colspec colname="col2" colnum="2" /> |
| <colspec colname="col3" colnum="3" /> |
| |
| <thead> |
| <row> |
| <entry>Type in OpenCL Language</entry> |
| <entry>Description</entry> |
| <entry>API type for application</entry> |
| </row> |
| </thead> |
| |
| <tbody> |
| <row> |
| <entry>half2</entry> |
| <entry>2-component half-precision floating-point vector</entry> |
| <entry>cl_half2</entry> |
| </row> |
| |
| <row> |
| <entry>half4</entry> |
| <entry>4-component half-precision floating-point vector</entry> |
| <entry>cl_half4</entry> |
| </row> |
| |
| <row> |
| <entry>half8</entry> |
| <entry>8-component half-precision floating-point vector</entry> |
| <entry>cl_half8</entry> |
| </row> |
| |
| <row> |
| <entry>half16</entry> |
| <entry>16-component half-precision floating-point vector</entry> |
| <entry>cl_half16</entry> |
| </row> |
| |
| </tbody> |
| </tgroup> |
| </informaltable> |
| </para> |
| </refsect1> |
| |
| |
| <!-- ================================ EXAMPLE --> |
| <!-- DO NOT DELETE IN CASE AN EXAMPLE IS ADDED IN THE FUTURE --> |
| <!-- |
| <refsect2 id="example1"> |
| <title> |
| Example |
| </title> |
| |
| <informaltable frame="none"> |
| <tgroup cols="1" align="left" colsep="0" rowsep="0"> |
| <colspec colname="col1" colnum="1" /> |
| <tbody> |
| <row> |
| <entry> |
| Example goes here - it will be set in "code" type with white space preserved. |
| </entry> |
| </row> |
| </tbody> |
| </tgroup> |
| </informaltable> |
| </refsect2> |
| --> |
| |
| |
| <!-- ================================ SPECIFICATION --> |
| <!-- Set the "uri" attribute in the <olink /> element to the "named destination" for the PDF page |
| --> |
| <refsect1 id="specification"><title>Specification</title> |
| <para> |
| <imageobject> |
| <imagedata fileref="pdficon_small1.gif" format="gif" /> |
| </imageobject> |
| |
| <olink uri="cl_khr_fp16">OpenCL Specification</olink> |
| </para> |
| </refsect1> |
| |
| |
| <!-- ================================ ALSO SEE --> |
| |
| <refsect1 id="seealso"><title>Also see</title> |
| <para> |
| <citerefentry><refentrytitle>EXTENSION</refentrytitle></citerefentry> |
| </para> |
| </refsect1> |
| |
| |
| |
| <!-- ============================== COPYRIGHT --> |
| <!-- Content included from copyright.inc.xsl --> |
| |
| <refsect3 id="Copyright"><title></title> |
| <imageobject> |
| <imagedata fileref="KhronosLogo.jpg" format="jpg" /> |
| </imageobject> |
| <para /> |
| </refsect3> |
| |
| </refentry> |
| |