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    <title>distance</title>
    <meta name="generator" content="DocBook XSL Stylesheets V1.78.1" />
    <meta name="keywords" content="distance" />
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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="distance"></a>
        <h1>distance</h1>
        <p>
            Vector distance.
        </p>
      </div>
      <div class="refsynopsisdiv">
        <h2></h2>
        <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">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">float</a>
                    <strong class="fsfunc">
                        distance
                    </strong>
                (</code>
                <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">float<em class="replaceable"><code>n</code></em></a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">p0</var>, </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">float<em class="replaceable"><code>n</code></em></a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">p1</var><code>)</code></td>
            </tr>
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              <td>
                <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
                    <a class="link" href="scalarDataTypes.html" target="pagedisplay">double</a>
                    <strong class="fsfunc">
                        distance
                    </strong>
                (</code>
                <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">double<em class="replaceable"><code>n</code></em></a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">p0</var>, </td>
              </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="vectorDataTypes.html" target="pagedisplay">double<em class="replaceable"><code>n</code></em></a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">p1</var><code>)</code></td>
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      <div class="refsect2">
        <a id="double"></a>
        <h3></h3>
        <div class="informaltable">
          <table border="0">
            <colgroup>
              <col align="left" class="col1" />
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                <td align="left">
<span class="type"><a class="link" href="scalarDataTypes.html" target="pagedisplay">half</a></span> <code class="function">distance</code> (<span class="type">gentype</span> <code class="varname">p0</code>,
             <span class="type">gentype</span> <code class="varname">p1</code>)     // if half extension enabled
</td>
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      </div>
      <div class="refsect1">
        <a id="description"></a>
        <h2>Description</h2>
        <p>
          Returns the distance between <code class="varname">p0</code>
          and <code class="varname">p1</code>. This is calculated as
          <a class="citerefentry" href="length.html"><span class="citerefentry"><span class="refentrytitle">length</span></span></a>(<code class="varname">p0</code>
          - <code class="varname">p1</code>).
        </p>
      </div>
      <div class="refsect1">
        <a id="notes"></a>
        <h2>Notes</h2>
        <p>
      General information about built-in geometric functions:
      Built-in geometric functions operate component-wise. The description
      is per-component. <span class="type">float<em class="replaceable"><code>n</code></em></span> is
      <span class="type">float</span>, <span class="type">float2</span>, <span class="type">float3</span>, or <span class="type">float4</span> and
      <span class="type">double<em class="replaceable"><code>n</code></em></span> is <span class="type">double</span>, <span class="type">double2</span>,
      <span class="type">double3</span>, or <span class="type">double4</span>. The built-in geometric functions are
      implemented using the round to nearest even rounding mode.
    </p>
        <p>
        The geometric functions can be implemented using contractions such
        as <a class="citerefentry" href="mad.html"><span class="citerefentry"><span class="refentrytitle">mad</span></span></a> or
        <a class="citerefentry" href="fma.html"><span class="citerefentry"><span class="refentrytitle">fma</span></span></a>.
    </p>
        <p>
            If extended with
            <a class="citerefentry" href="cl_khr_fp16.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_fp16</span></span></a>, generic type name
            <span class="type">gentype</span> may indicate <span class="type">half</span> and <span class="type">half{2|3|4}</span> as
            arguments.
        </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=88" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="geometricFunctions.html"><span class="citerefentry"><span class="refentrytitle">Geometric 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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