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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>__bitmap_shift_left</title><meta name="generator" content="DocBook XSL Stylesheets V1.76.1" /><link rel="home" href="index.html" title="The Linux Kernel API" /><link rel="up" href="kernel-lib.html#id2584202" title="Bitmap Operations" /><link rel="prev" href="API---bitmap-shift-right.html" title="__bitmap_shift_right" /><link rel="next" href="API-bitmap-scnprintf.html" title="bitmap_scnprintf" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>__bitmap_shift_left</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API---bitmap-shift-right.html">Prev</a> </td><th width="60%" align="center">Bitmap Operations</th><td width="20%" align="right"> <a accesskey="n" href="API-bitmap-scnprintf.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="__bitmap_shift_left"><a id="API---bitmap-shift-left"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>__bitmap_shift_left —
logical left shift of the bits in a bitmap
</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">void <strong>fsfunc__bitmap_shift_left </strong>(</code></td><td>unsigned long * <var class="pdparam">dst</var>, </td></tr><tr><td> </td><td>const unsigned long * <var class="pdparam">src</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">shift</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">bits</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2584488"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>dst</code></em></span></dt><dd><p>
destination bitmap
</p></dd><dt><span class="term"><em class="parameter"><code>src</code></em></span></dt><dd><p>
source bitmap
</p></dd><dt><span class="term"><em class="parameter"><code>shift</code></em></span></dt><dd><p>
shift by this many bits
</p></dd><dt><span class="term"><em class="parameter"><code>bits</code></em></span></dt><dd><p>
bitmap size, in bits
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2584563"></a><h2>Description</h2><p>
Shifting left (multiplying) means moving bits in the LS -> MS
direction. Zeros are fed into the vacated LS bit positions
and those MS bits shifted off the top are lost.
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