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<?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" pref:renderer="mathplayer-dl"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><link rel="stylesheet" type="text/css" href="opengl-man.css" /><title>bitfieldInsert - OpenGL Shading Language (GLSL)</title><meta name="generator" content="DocBook XSL Stylesheets V1.69.1" /></head><body><div class="refentry" lang="en" xml:lang="en"><a id="bitfieldInsert"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>bitfieldInsert — insert a range of bits into an integer</p></div><div class="refsynopsisdiv"><h2>Declaration</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" style="padding-bottom: 1em"><tr><td><code class="funcdef">genIType <b class="fsfunc">bitfieldInsert</b>(</code></td><td>genIType  </td><td><var class="pdparam">base</var>, </td></tr><tr><td> </td><td>genIType  </td><td><var class="pdparam">insert</var>, </td></tr><tr><td> </td><td>int  </td><td><var class="pdparam">offset</var>, </td></tr><tr><td> </td><td>int  </td><td><var class="pdparam">bits</var><code>)</code>;</td></tr></table><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">genUType <b class="fsfunc">bitfieldInsert</b>(</code></td><td>genUType  </td><td><var class="pdparam">base</var>, </td></tr><tr><td> </td><td>genUType  </td><td><var class="pdparam">insert</var>, </td></tr><tr><td> </td><td>int  </td><td><var class="pdparam">offset</var>, </td></tr><tr><td> </td><td>int  </td><td><var class="pdparam">bits</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>base</code></em></span></dt><dd><p>
                    Specifies the integer into which to insert <em class="parameter"><code>insert</code></em>.
                </p></dd><dt><span class="term"><em class="parameter"><code>insert</code></em></span></dt><dd><p>
                    Specifies the the value of the bits to insert.
                </p></dd><dt><span class="term"><em class="parameter"><code>offset</code></em></span></dt><dd><p>
                    Specifies the index of the first bit to insert.
                </p></dd><dt><span class="term"><em class="parameter"><code>bits</code></em></span></dt><dd><p>
                    Specifies the number of bits to insert.
                </p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p>
            <code class="function">bitfieldInsert</code> inserts the <em class="parameter"><code>bits</code></em> least significant bits of <em class="parameter"><code>insert</code></em>
            into <em class="parameter"><code>base</code></em> at offset <em class="parameter"><code>offset</code></em>. The returned value will have bits
            [<em class="parameter"><code>offset</code></em>, <em class="parameter"><code>offset</code></em> + <em class="parameter"><code>bits</code></em> + 1] taken from [0, <em class="parameter"><code>bits</code></em> - 1]
            of <em class="parameter"><code>insert</code></em> and all other bits taken directly from the corresponding bits of <em class="parameter"><code>base</code></em>. If
            <em class="parameter"><code>bits</code></em> is zero, the result will simply be the original value of <em class="parameter"><code>base</code></em>. The result will
            be undefined if <em class="parameter"><code>offset</code></em> or <em class="parameter"><code>bits</code></em> is negative, or if the sum of <em class="parameter"><code>offset</code></em>
            and <em class="parameter"><code>bits</code></em> is greater than the number of bits used to store the operand.
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="versions"></a><h2>Version Support</h2><div class="informaltable"><table border="1"><colgroup><col align="left" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /></colgroup><thead><tr><th align="left"><span class="bold"><strong>Function</strong></span></th><th align="left"><span class="bold"><strong>Version 1.10</strong></span></th><th align="left"><span class="bold"><strong>Version 1.20</strong></span></th><th align="left"><span class="bold"><strong>Version 1.30</strong></span></th><th align="left"><span class="bold"><strong>Version 1.40</strong></span></th><th align="left"><span class="bold"><strong>Version 1.50</strong></span></th><th align="left"><span class="bold"><strong>Version 3.30</strong></span></th><th align="left"><span class="bold"><strong>Version 4.00</strong></span></th><th align="left"><span class="bold"><strong>Version 4.10</strong></span></th><th align="left"><span class="bold"><strong>Version 4.20</strong></span></th><th align="center"><span class="bold"><strong>Version 4.30</strong></span></th></tr><tr><th align="left">bitfieldInsert</th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>Y</em></span></th><th align="center"><span class="emphasis"><em>Y</em></span></th><th align="center"><span class="emphasis"><em>Y</em></span></th><th align="center"><span class="emphasis"><em>Y</em></span></th></tr></thead></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p>
            <a href="bitfieldExtract.xml"><span class="citerefentry"><span class="refentrytitle">bitfieldExtract</span></span></a>
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p>
            Copyright <span class="trademark"></span>© 2011 Khronos Group. 
            This material may be distributed subject to the terms and conditions set forth in 
            the Open Publication License, v 1.0, 8 June 1999.
            <a href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
        </p></div></div></body></html>
