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| <title>Vector Data Types</title> |
| <meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /> |
| <meta name="keywords" content="Vector Data Types" /> |
| </head> |
| <body> |
| <div class="refentry"> |
| <a id="id-1"></a> |
| <div class="titlepage"></div> |
| <div xmlns="" class="refnamediv"> |
| <a xmlns="http://www.w3.org/1999/xhtml" id="VectorDataTypes"></a> |
| <h1>Vector Data Types</h1> |
| <p> |
| Built-in vector data types. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="description"></a> |
| <h2>Description</h2> |
| <p> |
| The <span class="type">char</span>, <span class="type">unsigned char</span>, <span class="type">short</span>, <span class="type">unsigned |
| short</span>, <span class="type">integer</span>, <span class="type">unsigned integer</span>, <span class="type">long</span>, |
| <span class="type">unsigned long</span>, and <span class="type">float</span> vector data types are supported. The |
| vector data type is defined with the type name i.e. <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">float</span>, <span class="type">long</span>, or <span class="type">ulong</span> followed by a literal value |
| <span class="emphasis"><em>n</em></span> that defines the number of elements in the vector. Supported |
| values of <span class="emphasis"><em>n</em></span> are 2, 3, 4, 8, and 16 for all vector data types. |
| </p> |
| <p> |
| The built-in vector data types 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 type in the OpenCL C programming language and the corresponding |
| data type available to the application: |
| </p> |
| <div class="informaltable"> |
| <table class="informaltable" border="1"> |
| <colgroup> |
| <col align="left" class="col1" /> |
| <col align="left" class="col2" /> |
| <col align="left" class="col3" /> |
| </colgroup> |
| <thead> |
| <tr> |
| <th align="left">Type in OpenCL Language</th> |
| <th align="left">Description</th> |
| <th align="left">API type for application</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td align="left"> |
| <span class="type">char<em class="replaceable"><code>n</code></em></span> |
| </td> |
| <td align="left">A vector of <em class="replaceable"><code>n</code></em> 8-bit signed two's complement integer values.</td> |
| <td align="left"> |
| <span class="type">cl_char<em class="replaceable"><code>n</code></em></span> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <span class="type">uchar<em class="replaceable"><code>n</code></em></span> |
| </td> |
| <td align="left">A vector of <em class="replaceable"><code>n</code></em> 8-bit unsigned integer values.</td> |
| <td align="left"> |
| <span class="type">cl_uchar<em class="replaceable"><code>n</code></em></span> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <span class="type">short<em class="replaceable"><code>n</code></em></span> |
| </td> |
| <td align="left">A vector of <em class="replaceable"><code>n</code></em> 16-bit signed two's complement integer values.</td> |
| <td align="left"> |
| <span class="type">cl_short<em class="replaceable"><code>n</code></em></span> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <span class="type">ushort<em class="replaceable"><code>n</code></em></span> |
| </td> |
| <td align="left">A vector of <em class="replaceable"><code>n</code></em> 16-bit unsigned integer values.</td> |
| <td align="left"> |
| <span class="type">cl_ushort<em class="replaceable"><code>n</code></em></span> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <span class="type">int<em class="replaceable"><code>n</code></em></span> |
| </td> |
| <td align="left">A vector of <em class="replaceable"><code>n</code></em> 32-bit signed two's complement integer values.</td> |
| <td align="left"> |
| <span class="type">cl_int<em class="replaceable"><code>n</code></em></span> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <span class="type">uint<em class="replaceable"><code>n</code></em></span> |
| </td> |
| <td align="left">A vector of <em class="replaceable"><code>n</code></em> 32-bit unsigned integer values.</td> |
| <td align="left"> |
| <span class="type">cl_uint<em class="replaceable"><code>n</code></em></span> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <span class="type">long<em class="replaceable"><code>n</code></em></span> |
| </td> |
| <td align="left">A vector of <em class="replaceable"><code>n</code></em> 64-bit signed two's complement integer values.</td> |
| <td align="left"> |
| <span class="type">cl_long<em class="replaceable"><code>n</code></em></span> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <span class="type">ulong<em class="replaceable"><code>n</code></em></span> |
| </td> |
| <td align="left">A vector of <em class="replaceable"><code>n</code></em> 64-bit unsigned integer values.</td> |
| <td align="left"> |
| <span class="type">cl_ulong<em class="replaceable"><code>n</code></em></span> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <span class="type">float<em class="replaceable"><code>n</code></em></span> |
| </td> |
| <td align="left">A vector of <em class="replaceable"><code>n</code></em> 32-bit floating-point values.</td> |
| <td align="left"> |
| <span class="type">cl_float<em class="replaceable"><code>n</code></em></span> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <span class="type">double<em class="replaceable"><code>n</code></em></span> |
| </td> |
| <td align="left">A vector of <em class="replaceable"><code>n</code></em> 64-bit floating-point values.</td> |
| <td align="left"> |
| <span class="type">cl_double<em class="replaceable"><code>n</code></em></span> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="notes"></a> |
| <h2>Notes</h2> |
| <p> |
| Built-in vector data types are supported by the OpenCL implementation even if the |
| underlying compute device does not support any or all of the vector data types. These |
| are to be converted by the device compiler to appropriate instructions that use |
| underlying built-in types supported natively by the compute device. |
| </p> |
| <p> |
| The <span class="type">double</span> vector type is an optional type that is supported if |
| <code class="constant">CL_DEVICE_DOUBLE_FP_CONFIG</code> for a device is not zero. See |
| <a class="citerefentry" href="clGetDeviceInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetDeviceInfo</span></span></a>. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="optional"></a> |
| <h2>Optional Half Floating Point</h2> |
| <p> |
| The <span class="type">half</span> floating-point is supported as an optional |
| extension. An application that wants to use <span class="type">half</span> |
| and <span class="type">half<em class="replaceable"><code>n</code></em></span> will need to include the |
| <a class="citerefentry" href="cl_khr_fp16.html"><span class="citerefentry"><span class="refentrytitle">#pragma OPENCL EXTENSION cl_khr_fp16 |
| : enable</span></span></a> directive. This will extended the list of |
| built-in vector and scalar data types to include the following: |
| </p> |
| <p> |
| </p> |
| <div class="informaltable"> |
| <table class="informaltable" border="1"> |
| <colgroup> |
| <col align="left" class="col1" /> |
| <col align="left" class="col2" /> |
| <col align="left" class="col3" /> |
| </colgroup> |
| <thead> |
| <tr> |
| <th align="left">Type in OpenCL Language</th> |
| <th align="left">Description</th> |
| <th align="left">API type for application</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td align="left"> |
| <span class="type">half2</span> |
| </td> |
| <td align="left">A 2-component half-precision floating-point vector.</td> |
| <td align="left"> |
| <span class="type">cl_half2</span> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <span class="type">half3</span> |
| </td> |
| <td align="left">A 3-component half-precision floating-point vector.</td> |
| <td align="left"> |
| <span class="type">cl_half3</span> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <span class="type">half4</span> |
| </td> |
| <td align="left">A 4-component half-precision floating-point vector.</td> |
| <td align="left"> |
| <span class="type">cl_half4</span> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <span class="type">half8</span> |
| </td> |
| <td align="left">An 8-component half-precision floating-point vector.</td> |
| <td align="left"> |
| <span class="type">cl_half8</span> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <span class="type">half16</span> |
| </td> |
| <td align="left">A 16-component half-precision floating-point vector.</td> |
| <td align="left"> |
| <span class="type">cl_half16</span> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <p> |
| </p> |
| <p> |
| The relational, equality, logical and logical unary operators can be used with |
| <span class="type">half</span> scalar and <span class="type">half<em class="replaceable"><code>n</code></em></span> |
| vector types and shall produce a scalar <span class="type">int</span> and vector |
| <span class="type">short<em class="replaceable"><code>n</code></em></span> result respectively. |
| </p> |
| <p> |
| The OpenCL compiler accepts an h and H suffix on floating point literals, |
| indicating the literal is typed as a <span class="type">half</span>. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="specification"></a> |
| <h2>Specification</h2> |
| <p> |
| <img src="pdficon_small1.gif" /> |
| |
| <a href="https://www.khronos.org/registry/cl/specs/opencl-2.0-openclc.pdf#namedest=vectorDataTypes" target="OpenCL Spec">OpenCL Specification</a> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="seealso"></a> |
| <h2>Also see</h2> |
| <p> |
| <a class="citerefentry" href="scalarDataTypes.html"><span class="citerefentry"><span class="refentrytitle">Scalar Data Types</span></span></a>, |
| <a class="citerefentry" href="reservedDataTypes.html"><span class="citerefentry"><span class="refentrytitle">Reserved Data Types</span></span></a>, |
| <a class="citerefentry" href="otherDataTypes.html"><span class="citerefentry"><span class="refentrytitle">Other Data Types</span></span></a>, |
| <a class="citerefentry" href="abstractDataTypes.html"><span class="citerefentry"><span class="refentrytitle">Abstract Data Types</span></span></a>, |
| <a class="citerefentry" href="enums.html"><span class="citerefentry"><span class="refentrytitle">Enumerated Data Types</span></span></a>, |
| <a class="citerefentry" href="cl_khr_fp16.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_fp16</span></span></a>, |
| <a class="citerefentry" href="cl_khr_fp64.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_fp64</span></span></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 © 2007-2015 The Khronos Group Inc. |
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| without limitation the rights to use, copy, modify, merge, publish, |
| distribute, sublicense, and/or sell copies of the Materials, and to |
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