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    <title>Reserved Data Types</title>
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    <div class="refentry">
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      <div class="titlepage"></div>
      <div xmlns="" class="refnamediv">
        <a xmlns="http://www.w3.org/1999/xhtml" id="ReservedDataTypes"></a>
        <h1>Reserved Data Types</h1>
        <p>
            Built-in reserved Data Types.
        </p>
      </div>
      <div class="refsect1">
        <a id="description"></a>
        <h2>Description</h2>
        <p>
            The data type names described in the table below are reserved and cannot be used
            by applications as type names. The vector data type names defined in
            <a class="citerefentry" href="vectorDataTypes.html"><span class="citerefentry"><span class="refentrytitle">Vector Data Types</span></span></a>,
            but where <code class="varname">n</code> is any value other than 2, 3, 4, 8 and 16, 
            are also reserved.
        </p>
        <p>
          </p>
        <div class="informaltable">
          <table class="informaltable" border="1">
            <colgroup>
              <col align="left" class="col1" />
              <col align="left" class="col2" />
            </colgroup>
            <thead>
              <tr>
                <th align="left">Type</th>
                <th align="left">Description</th>
              </tr>
            </thead>
            <tbody>
              <tr>
                <td align="left"> <span class="type">bool<em class="replaceable"><code>n</code></em></span> </td>
                <td align="left"> A boolean vector.</td>
              </tr>
              <tr>
                <td align="left"> <span class="type">half<em class="replaceable"><code>n</code></em></span> </td>
                <td align="left"> A 16-bit float vector.  </td>
              </tr>
              <tr>
                <td align="left"> <span class="type">quad</span>, <span class="type">quad<em class="replaceable"><code>n</code></em></span> </td>
                <td align="left"> A 128-bit floating-point number and vectors.</td>
              </tr>
              <tr>
                <td align="left">
<div class="literallayout"><p><span class="type">complex half</span>,<br />
<span class="type">complex half<em class="replaceable"><code>n</code></em></span>,<br />
<span class="type">imaginary half</span>,<br />
<span class="type">imaginary half<em class="replaceable"><code>n</code></em></span></p></div>
                        </td>
                <td align="left"> Complex and imaginary 16-bit floating-point scalar and vector.</td>
              </tr>
              <tr>
                <td align="left">
<div class="literallayout"><p><span class="type">complex float</span>,<br />
<span class="type">complex float<em class="replaceable"><code>n</code></em></span>,<br />
<span class="type">imaginary float</span>,<br />
<span class="type">imaginary float<em class="replaceable"><code>n</code></em></span></p></div>
                        </td>
                <td align="left"> Complex and imaginary 32-bit floating-point scalar and vector.</td>
              </tr>
              <tr>
                <td align="left">
<div class="literallayout"><p><span class="type">complex double</span>,<br />
<span class="type">complex double<em class="replaceable"><code>n</code></em></span>,<br />
<span class="type">imaginary double</span>,<br />
<span class="type">imaginary double<em class="replaceable"><code>n</code></em></span></p></div>
                        </td>
                <td align="left"> Complex and imaginary 64-bit floating-point scalar and vector.</td>
              </tr>
              <tr>
                <td align="left">
<div class="literallayout"><p><span class="type">complex quad</span>,<br />
<span class="type">complex quad<em class="replaceable"><code>n</code></em></span>,<br />
<span class="type">imaginary quad</span>,<br />
<span class="type">imaginary quad<em class="replaceable"><code>n</code></em></span></p></div>
                        </td>
                <td align="left"> Complex and imaginary 128-bit floating-point scalar and vector.</td>
              </tr>
              <tr>
                <td align="left">
<span class="type">float<em class="replaceable"><code>n</code></em></span>x<span class="emphasis"><em>m</em></span>
                        </td>
                <td align="left">
                            An <span class="emphasis"><em>n</em></span> x <span class="emphasis"><em>m</em></span> matrix of single precision
                            floating-point values stored in column-major order.
                        </td>
              </tr>
              <tr>
                <td align="left"> <span class="type">double<em class="replaceable"><code>n</code></em></span>x<span class="emphasis"><em>m</em></span> </td>
                <td align="left">
                            An <span class="emphasis"><em>n</em></span> x <span class="emphasis"><em>m</em></span> matrix of double precision
                            floating-point values stored in column-major order.
                        </td>
              </tr>
              <tr>
                <td align="left">
<div class="literallayout"><p><span class="type">long double</span>,<br />
<span class="type">long double<em class="replaceable"><code>n</code></em></span></p></div>
                        </td>
                <td align="left">
                            A floating-point scalar and vector type with at
                            long doublen least as much precision and range as a double
                            and no more precision and range than a quad.
                        </td>
              </tr>
              <tr>
                <td align="left">
<span class="type">long long</span>,
<span class="type">long long<em class="replaceable"><code>n</code></em></span>
                        </td>
                <td align="left"> A 128-bit signed integer scalar and vector.</td>
              </tr>
              <tr>
                <td align="left">
<span class="type">unsigned long long</span>,
<span class="type">ulong long</span>,
<span class="type">ulong long<em class="replaceable"><code>n</code></em></span>
                        </td>
                <td align="left"> A 128-bit unsigned integer scalar and vector.</td>
              </tr>
            </tbody>
          </table>
        </div>
        <p>
     </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-2.1-openclc.pdf#page=11" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="macroLimits.html"><span class="citerefentry"><span class="refentrytitle">Macros and Limits</span></span></a>,
            <a class="citerefentry" href="scalarDataTypes.html"><span class="citerefentry"><span class="refentrytitle">Scalar Data Types</span></span></a>,
            <a class="citerefentry" href="vectorDataTypes.html"><span class="citerefentry"><span class="refentrytitle">Vector 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>
        </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.
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
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