128 lines
4.5 KiB
HTML
128 lines
4.5 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<!-- Copyright (c) 2001 The Open Group, All Rights Reserved -->
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<title>wmemcmp</title>
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<script type="text/javascript" language="JavaScript" src="../jscript/codes.js">
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<basefont size="3"> <a name="wmemcmp"></a> <a name="tag_03_860"></a><!-- wmemcmp -->
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<!--header start-->
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<center><font size="2">The Open Group Base Specifications Issue 6<br>
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IEEE Std 1003.1-2001<br>
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Copyright © 2001 The IEEE and The Open Group, All Rights reserved.</font></center>
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<!--header end-->
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<hr size="2" noshade>
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<h4><a name="tag_03_860_01"></a>NAME</h4>
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<blockquote>wmemcmp - compare wide characters in memory</blockquote>
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<h4><a name="tag_03_860_02"></a>SYNOPSIS</h4>
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<blockquote class="synopsis">
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<p><code><tt>#include <<a href="../basedefs/wchar.h.html">wchar.h</a>><br>
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<br>
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int wmemcmp(const wchar_t *</tt><i>ws1</i><tt>, const wchar_t *</tt><i>ws2</i><tt>, size_t</tt> <i>n</i><tt>);<br>
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</tt></code></p>
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</blockquote>
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<h4><a name="tag_03_860_03"></a>DESCRIPTION</h4>
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<blockquote>
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<div class="box"><sup>[<a href="javascript:open_code('CX')">CX</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]"
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border="0"> The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the
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requirements described here and the ISO C standard is unintentional. This volume of IEEE Std 1003.1-2001 defers to
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the ISO C standard. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></div>
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<p>The <i>wmemcmp</i>() function shall compare the first <i>n</i> wide characters of the object pointed to by <i>ws1</i> to the
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first <i>n</i> wide characters of the object pointed to by <i>ws2</i>. This function shall not be affected by locale and all
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<b>wchar_t</b> values shall be treated identically. The null wide character and <b>wchar_t</b> values not corresponding to valid
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characters shall not be treated specially.</p>
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<p>If <i>n</i> is zero, the application shall ensure that <i>ws1</i> and <i>ws2</i> are valid pointers, and the function shall
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behave as if the two objects compare equal.</p>
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</blockquote>
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<h4><a name="tag_03_860_04"></a>RETURN VALUE</h4>
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<blockquote>
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<p>The <i>wmemcmp</i>() function shall return an integer greater than, equal to, or less than zero, respectively, as the object
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pointed to by <i>ws1</i> is greater than, equal to, or less than the object pointed to by <i>ws2</i>.</p>
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</blockquote>
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<h4><a name="tag_03_860_05"></a>ERRORS</h4>
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<blockquote>
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<p>No errors are defined.</p>
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</blockquote>
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<hr>
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<div class="box"><em>The following sections are informative.</em></div>
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<h4><a name="tag_03_860_06"></a>EXAMPLES</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_860_07"></a>APPLICATION USAGE</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_860_08"></a>RATIONALE</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_860_09"></a>FUTURE DIRECTIONS</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_860_10"></a>SEE ALSO</h4>
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<blockquote>
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<p><a href="wmemchr.html"><i>wmemchr</i>()</a> , <a href="wmemcpy.html"><i>wmemcpy</i>()</a> , <a href=
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"wmemmove.html"><i>wmemmove</i>()</a> , <a href="wmemset.html"><i>wmemset</i>()</a> , the Base Definitions volume of
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IEEE Std 1003.1-2001, <a href="../basedefs/wchar.h.html"><i><wchar.h></i></a></p>
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</blockquote>
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<h4><a name="tag_03_860_11"></a>CHANGE HISTORY</h4>
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<blockquote>
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<p>First released in Issue 5. Included for alignment with ISO/IEC 9899:1990/Amendment 1:1995 (E).</p>
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</blockquote>
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<h4><a name="tag_03_860_12"></a>Issue 6</h4>
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<blockquote>
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<p>The DESCRIPTION is updated to avoid use of the term "must" for application requirements.</p>
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</blockquote>
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<div class="box"><em>End of informative text.</em></div>
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