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    <title>clamp</title>
    <meta name="generator" content="DocBook XSL Stylesheets V1.79.1" />
    <meta name="keywords" content="clamp" />
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  <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="clamp"></a>
        <h1>clamp</h1>
        <p>
            Clamp <code xmlns="http://www.w3.org/1999/xhtml" class="varname">x</code> to range given by <code xmlns="http://www.w3.org/1999/xhtml" class="varname">minval</code>, <code xmlns="http://www.w3.org/1999/xhtml" class="varname">maxval</code>.
        </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">
                    gentype
                    <strong class="fsfunc">                   
                        clamp
                    </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">minval</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>gentype <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">maxval</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">                   
                        clamp
                    </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>sgentype <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">minval</var>, </td>
            </tr>
            <tr valign="top">
              <td> </td>
              <td>sgentype <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">maxval</var><code>)</code></td>
            </tr>
          </table>
        </div>
      </div>
      <div class="refsect1">
        <a id="description"></a>
        <h2>Description</h2>
        <p>
            <code class="function">clamp</code> returns 
            <a class="citerefentry" href="integerMax.html"><span class="citerefentry"><span class="refentrytitle">min</span></span></a>
            (<a class="citerefentry" href="integerMax.html"><span class="citerefentry"><span class="refentrytitle">min</span></span></a>(
                <code class="varname">x</code>, <code class="varname">minval</code>), <code class="varname">maxval</code>).
        </p>
        <p>
            Results are undefined if <code class="varname">minval</code> &gt; <code class="varname">maxval</code>.
        </p>
      </div>
      <div class="refsect1">
        <a id="notes"></a>
        <h2>Notes</h2>
        <p>
          General information about built-in integer functions:
           Built-in integer functions take
          scalar or vector arguments. The vector versions of the integer functions operate
          component-wise. The description is per component.
        </p>
        <p>
          We use the generic type name <span class="type">gentype</span> to indicate that the function
          can take <span class="type">char</span>, <span class="type">char{2|3|4|8|16}</span>, <span class="type">uchar</span>,
          <span class="type">uchar{2|3|4|8|16}</span>, <span class="type">short</span>, <span class="type">short{2|3|4|8|16}</span>,
          <span class="type">ushort</span>, <span class="type">ushort{2|3|4|8|16}</span>, <span class="type">int</span>,
          <span class="type">int{2|3|4|8|16}</span>, <span class="type">uint</span>, <span class="type">uint{2|3|4|8|16}</span>,
          <span class="type">long</span>, <span class="type">long{2|3|4|8|16}</span>, <span class="type">ulong</span>, or
          <span class="type">ulong{2|3|4|8|16}</span> as the type for the arguments.  We use the generic type
          name <span class="type">ugentype</span> to refer to unsigned versions of <span class="type">gentype</span>. For
          example, if <span class="type">gentype</span> is <span class="type">char4</span>, <span class="type">ugentype</span> is
          <span class="type">uchar4</span>.
        </p>
        <p>
          We also use the generic type name <span class="type">sgentype</span> to indicate that the function can
          take a scalar data type 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">long</span>, or
          <span class="type">ulong</span> as the type for the arguments.  For built-in integer functions that
          take <span class="type">gentype</span> and <span class="type">sgentype</span> arguments, the <span class="type">gentype</span>
          argument must be a vector or scalar version of the <span class="type">sgentype</span> argument. For
          example, if <span class="type">sgentype</span> is <span class="type">uchar</span>, <span class="type">gentype</span>
          must be <span class="type">uchar</span> or <span class="type">uchar{2|3|4|8|16}</span>.  For vector versions,
          <span class="type">sgentype</span> is implicitly widened to <span class="type">gentype</span> as described in section 6.3.a
          of the OpenCL specification.
        </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>
      </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=integerFunctions" target="OpenCL Spec">OpenCL Specification</a>
        </p>
      </div>
      <div class="refsect1">
        <a id="seealso"></a>
        <h2>Also see</h2>
        <p>
            <a class="citerefentry" href="integerFunctions.html"><span class="citerefentry"><span class="refentrytitle">Integer 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
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in all copies or substantial portions of the Materials.
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