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Next: <a href="assert.html#assert" accesskey="n" rel="next">assert</a>, Previous: <a href="abort.html#abort" accesskey="p" rel="prev">abort</a>, Up: <a href="Stdlib.html#Stdlib" accesskey="u" rel="up">Stdlib</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
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<a name="abs_002d_002d_002dinteger-absolute-value-_0028magnitude_0029"></a>
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<h3 class="section">2.4 <code>abs</code>—integer absolute value (magnitude)</h3>
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<a name="index-abs"></a>
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<p><strong>Synopsis</strong>
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</p><div class="example">
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<pre class="example">#include <stdlib.h>
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int abs(int <var>i</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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<code>abs</code> returns
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the absolute value of <var>i</var> (also called the magnitude
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of <var>i</var>). That is, if <var>i</var> is negative, the result is the opposite
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of <var>i</var>, but if <var>i</var> is nonnegative the result is <var>i</var>.
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</p>
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<p>The similar function <code>labs</code> uses and returns <code>long</code> rather than <code>int</code> values.
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</p>
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<br>
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<p><strong>Returns</strong><br>
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The result is a nonnegative integer.
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</p>
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<br>
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<p><strong>Portability</strong><br>
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<code>abs</code> is ANSI.
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</p>
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<p>No supporting OS subroutines are required.
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