<?xml version="1.0" encoding="ANSI_X3.4-1968" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>memchr</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><link rel="home" href="index.html" title="The Linux Kernel API" /><link rel="up" href="ch02s02.html" title="String Manipulation" /><link rel="prev" href="API-strnstr.html" title="strnstr" /><link rel="next" href="API-memchr-inv.html" title="memchr_inv" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">memchr</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-strnstr.html">Prev</a> </td><th width="60%" align="center">String Manipulation</th><td width="20%" align="right"> <a accesskey="n" href="API-memchr-inv.html">Next</a></td></tr></table><hr /></div><div class="refentry"><a id="API-memchr"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>memchr — Find a character in an area of memory. </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void * <strong class="fsfunc">memchr </strong>(</code></td><td>const void * <var class="pdparam">s</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">c</var>, </td></tr><tr><td> </td><td>size_t <var class="pdparam">n</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a id="idm139749901872816"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>s</code></em></span></dt><dd><p> The memory area </p></dd><dt><span class="term"><em class="parameter"><code>c</code></em></span></dt><dd><p> The byte to search for </p></dd><dt><span class="term"><em class="parameter"><code>n</code></em></span></dt><dd><p> The size of the area. </p></dd></dl></div></div><div class="refsect1"><a id="idm139749901865952"></a><h2>Description</h2><p> returns the address of the first occurrence of <em class="parameter"><code>c</code></em>, or <code class="constant">NULL</code> if <em class="parameter"><code>c</code></em> is not found </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-strnstr.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch02s02.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="API-memchr-inv.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">strnstr</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span class="phrase">memchr_inv</span></td></tr></table></div></body></html>