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| <title>Vector Data Load and Store Functions</title> |
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| </head> |
| <body> |
| <div class="refentry"> |
| <a id="idm1"></a> |
| <div class="titlepage"></div> |
| <div xmlns="" class="refnamediv"> |
| <h1>Vector Data Load and Store Functions</h1> |
| <p>Click an item in the table below for details about that function.</p> |
| </div> |
| <div class="refsect1"> |
| <a id="springboard"></a> |
| <h2></h2> |
| <div class="informaltable"> |
| <table class="informaltable" border="1"> |
| <colgroup> |
| <col align="left" class="col1" /> |
| <col align="left" class="col2" /> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="vloadn.html"> |
| <span class="citerefentry"> |
| <span class="refentrytitle">vload<span class="emphasis"><em>n</em></span></span> |
| </span> |
| </a> |
| </td> |
| <td align="left"> |
| <p>Read vectors from a pointer to memory.</p> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="vstoren.html"> |
| <span class="citerefentry"> |
| <span class="refentrytitle">vstore<span class="emphasis"><em>n</em></span></span> |
| </span> |
| </a> |
| </td> |
| <td align="left"> |
| <p>Write a vector to a pointer to memory.</p> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="vload_half.html"> |
| <span class="citerefentry"> |
| <span class="refentrytitle">vload_half</span> |
| </span> |
| </a> |
| </td> |
| <td align="left"> |
| <p>Read a half float from a pointer to memory.</p> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="vload_halfn.html"> |
| <span class="citerefentry"> |
| <span class="refentrytitle">vload_half<span class="emphasis"><em>n</em></span></span> |
| </span> |
| </a> |
| </td> |
| <td align="left"> |
| <p>Read a half float vector from a pointer to memory.</p> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="vstore_half.html"> |
| <span class="citerefentry"> |
| <span class="refentrytitle">vstore_half</span> |
| </span> |
| </a> |
| </td> |
| <td align="left"> |
| <p>Convert float to half and write to a pointer to memory.</p> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="vstore_halfn.html"> |
| <span class="citerefentry"> |
| <span class="refentrytitle">vstore_half<span class="emphasis"><em>n</em></span></span> |
| </span> |
| </a> |
| </td> |
| <td align="left"> |
| <p>Convert float vector to half vector and write to a pointer to memory.</p> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="vloada_halfn.html"> |
| <span class="citerefentry"> |
| <span class="refentrytitle">vloada_half<span class="emphasis"><em>n</em></span></span> |
| </span> |
| </a> |
| </td> |
| <td align="left"> |
| <p>Read half float vector from a pointer to memory.</p> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="vstorea_halfn.html"> |
| <span class="citerefentry"> |
| <span class="refentrytitle">vstorea_half<span class="emphasis"><em>n</em></span></span> |
| </span> |
| </a> |
| </td> |
| <td align="left"> |
| <p>Convert float vector to half vector and write to a pointer to memory.</p> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="description"></a> |
| <h2>Description</h2> |
| <p> |
| Vector Data Load and Store Functions allow you to read and write vector types |
| from a pointer to memory. |
| </p> |
| <p> |
| The generic type <span class="type">gentype</span> is used to indicate the built-in data types |
| <span class="type">char</span>, <span class="type">uchar</span>, <span class="type">short</span>, <span class="type">ushort</span>, <span class="type">int</span>, <span class="type">uint</span>, <span class="type">long</span>, <span class="type">ulong</span>, or <span class="type">float</span>. |
| </p> |
| <p> |
| The generic type name <span class="type">gentype<em class="replaceable"><code>n</code></em></span> is used to indicate the built-in data types <span class="type">char{2|4|8|16}</span>, |
| <span class="type">uchar{2|4|8|16}</span>, <span class="type">short{2|4|8|16}</span>, <span class="type">ushort{2|4|8|16}</span>, |
| <span class="type">int{2|4|8|16}</span>, <span class="type">uint{2|4|8|16}</span>, <span class="type">long{2|4|8|16}</span>, <span class="type">ulong{2|4|8|16}</span>, or <span class="type">float{2|4|8|16}</span> as the type for the arguments unless otherwise stated. The suffix used in gentype<span class="emphasis"><em>n</em></span> or the function name (i.e. <code class="function">vload<span class="emphasis"><em>n</em></span></code>, <code class="function">vstore<span class="emphasis"><em>n</em></span></code>, etc.) represents the number of elements in the built-in vector type (<span class="emphasis"><em>n</em></span> = 2, 4, 8, or 16). |
| </p> |
| <p> |
| The results of vector data load and store functions are undefined if the address being read from |
| or written to is not correctly aligned. The pointer argument <code class="varname">p</code> can be a |
| pointer to <a class="citerefentry" href="global.html"><span class="citerefentry"><span class="refentrytitle">__global</span></span></a>, <a class="citerefentry" href="local.html"><span class="citerefentry"><span class="refentrytitle">__local</span></span></a>, or <a class="citerefentry" href="private.html"><span class="citerefentry"><span class="refentrytitle">__private</span></span></a> memory for store functions. The |
| pointer argument <code class="varname">p</code> can be a pointer to __global, __local, <a class="citerefentry" href="constant.html"><span class="citerefentry"><span class="refentrytitle">__constant</span></span></a> or __private memory for load functions. |
| </p> |
| <p> |
| Certain built-in vector data load and store functions are extended with <a class="citerefentry" href="cl_khr_fp64.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_fp64</span></span></a> to include appropriate versions of functions that take <span class="type">double</span>, and <span class="type">double{2|4|8|16}</span> as arguments and return values. They are also extended with with <a class="citerefentry" href="cl_khr_fp16.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_fp16</span></span></a> to include appropriate versions of functions that take <span class="type">half</span>, and <span class="type">half{2|4|8|16}</span> as arguments and return values. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="specification"></a> |
| <h2>Specification</h2> |
| <p> |
| <img src="pdficon_small1.gif" /> |
| |
| <a href="http://www.khronos.org/registry/cl/specs/opencl-1.0.pdf#page=186" target="OpenCL Spec">OpenCL Specification</a> |
| </p> |
| </div> |
| <div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2009 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. |
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