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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>strtoimax</title></head><body bgcolor="white"><script type="text/javascript" language="JavaScript" src="../jscript/codes.js"></script><basefont size="3"> <a name="strtoimax"></a> <a name="tag_03_741"></a><!-- strtoimax --> <!--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_741_01"></a>NAME</h4><blockquote>strtoimax, strtoumax - convert string to integer type</blockquote><h4><a name="tag_03_741_02"></a>SYNOPSIS</h4><blockquote class="synopsis"><p><code><tt>#include <<a href="../basedefs/inttypes.h.html">inttypes.h</a>><br><br> intmax_t strtoimax(const char *restrict</tt> <i>nptr</i><tt>, char **restrict</tt> <i>endptr</i><tt>,<br> int</tt> <i>base</i><tt>);<br> uintmax_t strtoumax(const char *restrict</tt> <i>nptr</i><tt>, char **restrict</tt> <i>endptr</i><tt>,<br> int</tt> <i>base</i><tt>);<br></tt></code></p></blockquote><h4><a name="tag_03_741_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/strtol.html"><i>strtol</i>()</a>, <a href="../functions/strtoll.html"><i>strtoll</i>()</a>, <a href="../functions/strtoul.html"><i>strtoul</i>()</a>, and <a href="../functions/strtoull.html"><i>strtoull</i>()</a> functions, except that the initial portion of the string shall be converted to<b>intmax_t</b> and <b>uintmax_t</b> representation, respectively.</p></blockquote><h4><a name="tag_03_741_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.</p><p>If the correct value is outside the range of representable values, {INTMAX_MAX}, {INTMAX_MIN}, or {UINTMAX_MAX} shall bereturned (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_741_05"></a>ERRORS</h4><blockquote><p>These functions shall fail if:</p><dl compact><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>The value of <i>base</i> is not supported.</dd></dl></blockquote><hr><div class="box"><em>The following sections are informative.</em></div><h4><a name="tag_03_741_06"></a>EXAMPLES</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_741_07"></a>APPLICATION USAGE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_741_08"></a>RATIONALE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_741_09"></a>FUTURE DIRECTIONS</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_741_10"></a>SEE ALSO</h4><blockquote><p><a href="strtol.html"><i>strtol</i>()</a> , <a href="strtoul.html"><i>strtoul</i>()</a> , the Base Definitions volume ofIEEE Std 1003.1-2001, <a href="../basedefs/inttypes.h.html"><i><inttypes.h></i></a></p></blockquote><h4><a name="tag_03_741_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><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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