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<title>&lt;strings.h&gt;</title>
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<basefont size="3"> <a name="&lt;strings.h&gt;"></a> <a name="tag_13_52"></a><!-- &lt;strings.h&gt; -->
<!--header start-->
<center><font size="2">The Open Group Base Specifications Issue 6<br>
IEEE Std 1003.1-2001<br>
Copyright &copy; 2001 The IEEE and The Open Group, All Rights reserved.</font></center>
<!--header end-->
<hr size="2" noshade>
<h4><a name="tag_13_52_01"></a>NAME</h4>
<blockquote>strings.h - string operations</blockquote>
<h4><a name="tag_13_52_02"></a>SYNOPSIS</h4>
<blockquote class="synopsis">
<div class="box"><tt><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt=
"[Option Start]" border="0"> #include &lt;strings.h&gt; <img src="../images/opt-end.gif" alt="[Option End]" border="0"></tt></div>
</blockquote>
<h4><a name="tag_13_52_03"></a>DESCRIPTION</h4>
<blockquote>
<p>The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.</p>
<pre>
<tt>int bcmp(const void *, const void *, size_t); (</tt><b>LEGACY</b> <tt>)
void bcopy(const void *, void *, size_t); (</tt><b>LEGACY</b> <tt>)
void bzero(void *, size_t); (</tt><b>LEGACY</b> <tt>)
int ffs(int);
char *index(const char *, int); (</tt><b>LEGACY</b> <tt>)
char *rindex(const char *, int); (</tt><b>LEGACY</b> <tt>)
int strcasecmp(const char *, const char *);
int strncasecmp(const char *, const char *, size_t);
</tt>
</pre>
<p>The <b>size_t</b> type shall be defined through <b>typedef</b> as described in <a href=
"stddef.h.html"><i>&lt;stddef.h&gt;</i></a> .</p>
</blockquote>
<hr>
<div class="box"><em>The following sections are informative.</em></div>
<h4><a name="tag_13_52_04"></a>APPLICATION USAGE</h4>
<blockquote>
<p>None.</p>
</blockquote>
<h4><a name="tag_13_52_05"></a>RATIONALE</h4>
<blockquote>
<p>None.</p>
</blockquote>
<h4><a name="tag_13_52_06"></a>FUTURE DIRECTIONS</h4>
<blockquote>
<p>None.</p>
</blockquote>
<h4><a name="tag_13_52_07"></a>SEE ALSO</h4>
<blockquote>
<p><a href="stddef.h.html"><i>&lt;stddef.h&gt;</i></a> , the System Interfaces volume of IEEE&nbsp;Std&nbsp;1003.1-2001, <a href=
"../functions/ffs.html"><i>ffs</i>()</a>, <a href="../functions/strcasecmp.html"><i>strcasecmp</i>()</a>, <a href=
"../functions/strncasecmp.html"><i>strncasecmp</i>()</a></p>
</blockquote>
<h4><a name="tag_13_52_08"></a>CHANGE HISTORY</h4>
<blockquote>
<p>First released in Issue 4, Version 2.</p>
</blockquote>
<h4><a name="tag_13_52_09"></a>Issue 6</h4>
<blockquote>
<p>The Open Group Corrigendum U021/2 is applied, correcting the prototype for <a href="../functions/index.html"><i>index</i>()</a>
to be consistent with the reference page.</p>
<p>The <a href="../functions/bcmp.html"><i>bcmp</i>()</a>, <a href="../functions/bcopy.html"><i>bcopy</i>()</a>, <a href=
"../functions/bzero.html"><i>bzero</i>()</a>, <a href="../functions/index.html"><i>index</i>()</a>, and <a href=
"../functions/rindex.html"><i>rindex</i>()</a> functions are marked LEGACY.</p>
</blockquote>
<div class="box"><em>End of informative text.</em></div>
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