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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta name="generator" content="HTML Tidy, see www.w3.org"><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><link type="text/css" rel="stylesheet" href="style.css"><!-- Generated by The Open Group's rhtm tool v1.2.1 --><!-- Copyright (c) 2001-2003 The Open Group, All Rights Reserved --><title>mbsinit</title></head><body bgcolor="white"><script type="text/javascript" language="JavaScript" src="../jscript/codes.js"></script><basefont size="3"> <a name="mbsinit"></a> <a name="tag_03_361"></a><!-- mbsinit --> <!--header start--><center><font size="2">The Open Group Base Specifications Issue 6<br>IEEE Std 1003.1, 2003 Edition<br>Copyright © 2001-2003 The IEEE and The Open Group, All Rights reserved.</font></center><!--header end--><hr size="2" noshade><h4><a name="tag_03_361_01"></a>NAME</h4><blockquote>mbsinit - determine conversion object status</blockquote><h4><a name="tag_03_361_02"></a>SYNOPSIS</h4><blockquote class="synopsis"><p><code><tt>#include <<a href="../basedefs/wchar.h.html">wchar.h</a>><br><br> int mbsinit(const mbstate_t *</tt><i>ps</i><tt>);<br></tt></code></p></blockquote><h4><a name="tag_03_361_03"></a>DESCRIPTION</h4><blockquote><div class="box"><sup>[<a href="javascript:open_code('CX')">CX</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]"border="0"> The functionality described on this reference page is aligned with the ISO C standard. Any conflict between therequirements described here and the ISO C standard is unintentional. This volume of IEEE Std 1003.1-2001 defers tothe ISO C standard. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></div><p>If <i>ps</i> is not a null pointer, the <i>mbsinit</i>() function shall determine whether the object pointed to by <i>ps</i>describes an initial conversion state.</p></blockquote><h4><a name="tag_03_361_04"></a>RETURN VALUE</h4><blockquote><p>The <i>mbsinit</i>() function shall return non-zero if <i>ps</i> is a null pointer, or if the pointed-to object describes aninitial conversion state; otherwise, it shall return zero.</p><p>If an <b>mbstate_t</b> object is altered by any of the functions described as "restartable", and is then used with a differentcharacter sequence, or in the other conversion direction, or with a different <i>LC_CTYPE</i> category setting than on earlierfunction calls, the behavior is undefined.</p></blockquote><h4><a name="tag_03_361_05"></a>ERRORS</h4><blockquote><p>No errors are defined.</p></blockquote><hr><div class="box"><em>The following sections are informative.</em></div><h4><a name="tag_03_361_06"></a>EXAMPLES</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_361_07"></a>APPLICATION USAGE</h4><blockquote><p>The <b>mbstate_t</b> object is used to describe the current conversion state from a particular character sequence to awide-character sequence (or <i>vice versa</i>) under the rules of a particular setting of the <i>LC_CTYPE</i> category of thecurrent locale.</p><p>The initial conversion state corresponds, for a conversion in either direction, to the beginning of a new character sequence inthe initial shift state. A zero valued <b>mbstate_t</b> object is at least one way to describe an initial conversion state. A zerovalued <b>mbstate_t</b> object can be used to initiate conversion involving any character sequence, in any <i>LC_CTYPE</i> categorysetting.</p></blockquote><h4><a name="tag_03_361_08"></a>RATIONALE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_361_09"></a>FUTURE DIRECTIONS</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_361_10"></a>SEE ALSO</h4><blockquote><p><a href="mbrlen.html"><i>mbrlen</i>()</a> , <a href="mbrtowc.html"><i>mbrtowc</i>()</a> , <a href="wcrtomb.html"><i>wcrtomb</i>()</a> , <a href="mbsrtowcs.html"><i>mbsrtowcs</i>()</a> , <a href="wcsrtombs.html"><i>wcsrtombs</i>()</a> , the Base Definitions volume of IEEE Std 1003.1-2001, <a href="../basedefs/wchar.h.html"><i><wchar.h></i></a></p></blockquote><h4><a name="tag_03_361_11"></a>CHANGE HISTORY</h4><blockquote><p>First released in Issue 5. Included for alignment with ISO/IEC 9899:1990/Amendment 1:1995 (E).</p></blockquote><div class="box"><em>End of informative text.</em></div><hr><hr size="2" noshade><center><font size="2"><!--footer start-->UNIX ® is a registered Trademark of The Open Group.<br>POSIX ® is a registered Trademark of The IEEE.<br>[ <a href="../mindex.html">Main Index</a> | <a href="../basedefs/contents.html">XBD</a> | <a href="../utilities/contents.html">XCU</a> | <a href="../functions/contents.html">XSH</a> | <a href="../xrat/contents.html">XRAT</a>]</font></center><!--footer end--><hr size="2" noshade></body></html>⌨️ 快捷键说明
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