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89 lines
3.2 KiB
HTML
89 lines
3.2 KiB
HTML
4 years ago
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<title>fabs (LIBM)</title>
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<meta name="description" content="fabs (LIBM)">
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<link href="Document-Index.html#Document-Index" rel="index" title="Document Index">
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<link href="Document-Index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Math.html#Math" rel="up" title="Math">
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<link href="fdim.html#fdim" rel="next" title="fdim">
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<body lang="en">
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<a name="fabs"></a>
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<div class="header">
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<p>
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Next: <a href="fdim.html#fdim" accesskey="n" rel="next">fdim</a>, Previous: <a href="expm1.html#expm1" accesskey="p" rel="prev">expm1</a>, Up: <a href="Math.html#Math" accesskey="u" rel="up">Math</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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</div>
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<hr>
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<a name="fabs_002c-fabsf_002d_002d_002dabsolute-value-_0028magnitude_0029"></a>
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<h3 class="section">1.19 <code>fabs</code>, <code>fabsf</code>—absolute value (magnitude)</h3>
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<a name="index-fabs"></a>
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<a name="index-fabsf"></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 <math.h>
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double fabs(double <var>x</var>);
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float fabsf(float <var>x</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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<code>fabs</code> and <code>fabsf</code> calculate
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the absolute value (magnitude) of the argument <var>x</var>, by direct
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manipulation of the bit representation of <var>x</var>.
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</p>
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<br>
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<p><strong>Returns</strong><br>
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The calculated value is returned. No errors are detected.
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</p>
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<br>
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<p><strong>Portability</strong><br>
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<code>fabs</code> is ANSI.
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<code>fabsf</code> is an extension.
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</p>
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<br>
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</body>
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