📄 wcstoimax.html
字号:
<!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) 2001-2004 IEEE and The Open Group, All Rights Reserved --><title>wcstoimax</title></head><body bgcolor="white"><script type="text/javascript" language="JavaScript" src="../jscript/codes.js"></script><basefont size="3"> <a name="wcstoimax"></a> <a name="tag_03_843"></a><!-- wcstoimax --> <!--header start--><center><font size="2">The Open Group Base Specifications Issue 6<br>IEEE Std 1003.1, 2004 Edition<br>Copyright © 2001-2004 The IEEE and The Open Group, All Rights reserved.</font></center><!--header end--><hr size="2" noshade><h4><a name="tag_03_843_01"></a>NAME</h4><blockquote>wcstoimax, wcstoumax - convert a wide-character string to an integer type</blockquote><h4><a name="tag_03_843_02"></a>SYNOPSIS</h4><blockquote class="synopsis"><p><code><tt>#include <<a href="../basedefs/stddef.h.html">stddef.h</a>><br> #include <<a href="../basedefs/inttypes.h.html">inttypes.h</a>><br><br> intmax_t wcstoimax(const wchar_t *restrict</tt> <i>nptr</i><tt>,<br> wchar_t **restrict</tt> <i>endptr</i><tt>, int</tt> <i>base</i><tt>);<br> uintmax_t wcstoumax(const wchar_t *restrict</tt> <i>nptr</i><tt>,<br> wchar_t **restrict</tt> <i>endptr</i><tt>, int</tt> <i>base</i><tt>);<br></tt></code></p></blockquote><h4><a name="tag_03_843_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>These functions shall be equivalent to the <a href="../functions/wcstol.html"><i>wcstol</i>()</a>, <a href="../functions/wcstoll.html"><i>wcstoll</i>()</a>, <a href="../functions/wcstoul.html"><i>wcstoul</i>()</a>, and <a href="../functions/wcstoull.html"><i>wcstoull</i>()</a> functions, respectively, except that the initial portion of the wide stringshall be converted to <b>intmax_t</b> and <b>uintmax_t</b> representation, respectively.</p></blockquote><h4><a name="tag_03_843_04"></a>RETURN VALUE</h4><blockquote><p>These functions shall return the converted value, if any.</p><p>If no conversion could be performed, zero shall be returned. If the correct value is outside the range of representable values,{INTMAX_MAX}, {INTMAX_MIN}, or {UINTMAX_MAX} shall be returned (according to the return type and sign of the value, if any), and<i>errno</i> shall be set to [ERANGE].</p></blockquote><h4><a name="tag_03_843_05"></a>ERRORS</h4><blockquote><p>These functions shall fail if:</p><dl compact><dt>[EINVAL]</dt><dd>The value of <i>base</i> is not supported.</dd><dt>[ERANGE]</dt><dd>The value to be returned is not representable.</dd></dl><p>These functions may fail if:</p><dl compact><dt>[EINVAL]</dt><dd>No conversion could be performed.</dd></dl></blockquote><hr><div class="box"><em>The following sections are informative.</em></div><h4><a name="tag_03_843_06"></a>EXAMPLES</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_843_07"></a>APPLICATION USAGE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_843_08"></a>RATIONALE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_843_09"></a>FUTURE DIRECTIONS</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_843_10"></a>SEE ALSO</h4><blockquote><p><a href="wcstol.html"><i>wcstol</i>()</a>, <a href="wcstoul.html"><i>wcstoul</i>()</a>, the Base Definitions volume ofIEEE Std 1003.1-2001, <a href="../basedefs/inttypes.h.html"><i><inttypes.h></i></a>, <a href="../basedefs/stddef.h.html"><i><stddef.h></i></a></p></blockquote><h4><a name="tag_03_843_11"></a>CHANGE HISTORY</h4><blockquote><p>First released in Issue 6. Derived from the ISO/IEC 9899:1999 standard.</p></blockquote><div class="box"><em>End of informative text.</em></div><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
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -