123 lines
3.9 KiB
HTML
123 lines
3.9 KiB
HTML
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<!-- Copyright (c) 2001 The Open Group, All Rights Reserved -->
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<title>memccpy</title>
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<basefont size="3"> <a name="memccpy"></a> <a name="tag_03_365"></a><!-- memccpy -->
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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_365_01"></a>NAME</h4>
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<blockquote>memccpy - copy bytes in memory</blockquote>
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<h4><a name="tag_03_365_02"></a>SYNOPSIS</h4>
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<blockquote class="synopsis">
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<div class="box"><code><tt><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt=
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"[Option Start]" border="0"> #include <<a href="../basedefs/string.h.html">string.h</a>><br>
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<br>
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void *memccpy(void *restrict</tt> <i>s1</i><tt>, const void *restrict</tt> <i>s2</i><tt>,<br>
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int</tt> <i>c</i><tt>, size_t</tt> <i>n</i><tt>); <img src="../images/opt-end.gif" alt=
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"[Option End]" border="0"></tt></code></div>
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<tt><br>
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</tt></blockquote>
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<h4><a name="tag_03_365_03"></a>DESCRIPTION</h4>
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<blockquote>
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<p>The <i>memccpy</i>() function shall copy bytes from memory area <i>s2</i> into <i>s1</i>, stopping after the first occurrence of
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byte <i>c</i> (converted to an <b>unsigned char</b>) is copied, or after <i>n</i> bytes are copied, whichever comes first. If
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copying takes place between objects that overlap, the behavior is undefined.</p>
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</blockquote>
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<h4><a name="tag_03_365_04"></a>RETURN VALUE</h4>
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<blockquote>
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<p>The <i>memccpy</i>() function shall return a pointer to the byte after the copy of <i>c</i> in <i>s1</i>, or a null pointer if
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<i>c</i> was not found in the first <i>n</i> bytes of <i>s2</i>.</p>
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</blockquote>
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<h4><a name="tag_03_365_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_365_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_365_07"></a>APPLICATION USAGE</h4>
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<blockquote>
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<p>The <i>memccpy</i>() function does not check for the overflow of the receiving memory area.</p>
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</blockquote>
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<h4><a name="tag_03_365_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_365_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_365_10"></a>SEE ALSO</h4>
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<blockquote>
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<p>The Base Definitions volume of IEEE Std 1003.1-2001, <a href=
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"../basedefs/string.h.html"><i><string.h></i></a></p>
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</blockquote>
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<h4><a name="tag_03_365_11"></a>CHANGE HISTORY</h4>
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<blockquote>
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<p>First released in Issue 1. Derived from Issue 1 of the SVID.</p>
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</blockquote>
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<h4><a name="tag_03_365_12"></a>Issue 6</h4>
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<blockquote>
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<p>The <b>restrict</b> keyword is added to the <i>memccpy</i>() prototype for alignment with the ISO/IEC 9899:1999
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standard.</p>
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</blockquote>
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<div class="box"><em>End of informative text.</em></div>
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