sdk/2.1/docs/man/xhtml/divide.html

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    <title>half_divide, native_divide</title>
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    <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="divide"></a>
        <h1>half_divide, native_divide</h1>
        <p>
            Division functions.
        </p>
      </div>
      <div class="refsynopsisdiv">
        <h2></h2>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
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              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    gentype
                    <strong class="fsfunc">
                        half_divide
                    </strong>
                (</code>
                <td>gentype <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">x</var>, </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>gentype <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">y</var><code>)</code></td>
            </tr>
          </table>
        </div>
        <div class="funcsynopsis">
          <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
            <tr valign="bottom">
              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    gentype
                    <strong class="fsfunc">
                        native_divide
                    </strong>
                (</code>
                <td>gentype <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">x</var>, </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>gentype <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">y</var><code>)</code></td>
            </tr>
          </table>
        </div>
      </div>
      <div class="refsect1">
        <a id="description"></a>
        <h2>Description</h2>
        <p>
          <code class="function">half_divide</code> computes <code class="varname">x</code> /
          <code class="varname">y</code>.
        </p>
        <p>
          <code class="function">native_divide</code> computes <code class="varname">x</code> /
          <code class="varname">y</code> over an implementation-defined range.
          The maximum error is implementation-defined.
        </p>
        <p>
          The vector versions of the math functions operate component-wise.  The description
          is per-component.
        </p>
        <p>
          The built-in math functions are not affected by the prevailing rounding mode in the
          calling environment, and always return the same value as they would if called with
          the round to nearest even rounding mode.
        </p>
        <p>
          For any specific use of a function, the actual type has to be the same for all
          arguments and the return type, unless otherwise specified.
        </p>
        <h4><a id="id-1.5.7"></a>Half and Native forms</h4>
        <p>
        A subset of Math functions (table 6.8) are defined 
        with the <code class="code">half_</code> prefix. These 
        functions are implemented with a minimum of 
        10-bits of accuracy i.e. an ULP value ≤ 
        8192 ulp.
    </p>
        <p>
        A subset of Math functions (table 6.8) are 
        defined with the <code class="code">native_</code> prefix. These 
        functions may map to one or more native device 
        instructions and will typically have 
        better performance compared to the corresponding 
        functions (without the <code class="code">native__</code>
        prefix). The accuracy (and in some cases the 
        input range(s)) of 
        these functions is implementation-defined.
    </p>
        <p>
        For the half and native forms, we use the 
        generic type name 
        gentype to indicate that the functions 
        (table 6.9) can take 
        <span class="type">float</span>, <span class="type">float2</span>, 
        <span class="type">float3</span>, 
        <span class="type">float4</span>, <span class="type">float8</span> 
        or <span class="type">float16</span> as the type for the 
        arguments.
    </p>
        <p>
        Support for denormal values is optional for 
        <code class="code">half_</code> functions. The <code class="code">half_</code> 
        functions may return any 
        result allowed by section 7.5.3, even when 
        <code class="code">-cl-denorms-are-zero</code> (see section 5.8.4.2) is not in 
        force. Support for denormal values is 
        implementation-defined for <code class="code">native_</code> functions.
    </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=72" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="mathFunctions.html"><span class="citerefentry"><span class="refentrytitle">Math Functions</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
in all copies or substantial portions of the Materials.
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