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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><!-- Copyright 1997 The Open Group, All Rights Reserved --><title>abs</title></head><body bgcolor=white><center><font size=2>The Single UNIX ® Specification, Version 2<br>Copyright © 1997 The Open Group</font></center><hr size=2 noshade><h4><a name = "tag_000_001_059"> </a>NAME</h4><blockquote><br>abs - return an integer absolute value</blockquote><h4><a name = "tag_000_001_060"> </a>SYNOPSIS</h4><blockquote><br><pre><code>#include <<a href="stdlib.h.html">stdlib.h</a>>int abs(int <i>i</i>);</code></pre></blockquote><h4><a name = "tag_000_001_061"> </a>DESCRIPTION</h4><blockquote>The<i>abs()</i>function computes the absolute value of its integer operand,<i>i.</i>If the result cannot be represented, the behaviour is undefined.</blockquote><h4><a name = "tag_000_001_062"> </a>RETURN VALUE</h4><blockquote>The<i>abs()</i>function returns the absolute value of its integer operand.</blockquote><h4><a name = "tag_000_001_063"> </a>ERRORS</h4><blockquote>No errors are defined.</blockquote><h4><a name = "tag_000_001_064"> </a>EXAMPLES</h4><blockquote>None.</blockquote><h4><a name = "tag_000_001_065"> </a>APPLICATION USAGE</h4><blockquote>In two's-complement representation,the absolute value of the negative integer with largest magnitude{INT_MIN} might not be representable.</blockquote><h4><a name = "tag_000_001_066"> </a>FUTURE DIRECTIONS</h4><blockquote>None.</blockquote><h4><a name = "tag_000_001_067"> </a>SEE ALSO</h4><blockquote><br><i><a href="fabs.html">fabs()</a></i>,<i><a href="labs.html">labs()</a></i>,<i><a href="stdlib.h.html"><stdlib.h></a></i>.</blockquote><h4>DERIVATION</h4><blockquote>Derived from Issue 1 of the SVID.</blockquote><hr size=2 noshade><center><font size=2>UNIX ® is a registered Trademark of The Open Group.<br>Copyright © 1997 The Open Group<br> [ <a href="../index.html">Main Index</a> | <a href="../xshix.html">XSH</a> | <a href="../xcuix.html">XCU</a> | <a href="../xbdix.html">XBD</a> | <a href="../cursesix.html">XCURSES</a> | <a href="../xnsix.html">XNS</a> ]</font></center><hr size=2 noshade></body></html>⌨️ 快捷键说明
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