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92 lines
3.5 KiB
HTML
92 lines
3.5 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>fmod (LIBM)</title>
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<meta name="description" content="fmod (LIBM)">
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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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<body lang="en">
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<a name="fmod"></a>
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<div class="header">
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<p>
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Next: <a href="frexp.html#frexp" accesskey="n" rel="next">frexp</a>, Previous: <a href="fmin.html#fmin" accesskey="p" rel="prev">fmin</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="fmod_002c-fmodf_002d_002d_002dfloating_002dpoint-remainder-_0028modulo_0029"></a>
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<h3 class="section">1.25 <code>fmod</code>, <code>fmodf</code>—floating-point remainder (modulo)</h3>
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<a name="index-fmod"></a>
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<a name="index-fmodf"></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 fmod(double <var>x</var>, double <var>y</var>);
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float fmodf(float <var>x</var>, float <var>y</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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The <code>fmod</code> and <code>fmodf</code> functions compute the floating-point
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remainder of <var>x</var>/<var>y</var> (<var>x</var> modulo <var>y</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 <code>fmod</code> function returns the value
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<var>x</var>-<var>i</var>*<var>y</var>,
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for the largest integer <var>i</var> such that, if <var>y</var> is nonzero, the
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result has the same sign as <var>x</var> and magnitude less than the
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magnitude of <var>y</var>.
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</p>
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<p><code>fmod(<var>x</var>,0)</code> returns NaN, and sets <code>errno</code> to <code>EDOM</code>.
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</p>
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<br>
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<p><strong>Portability</strong><br>
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<code>fmod</code> is ANSI C. <code>fmodf</code> is an extension.
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</p>
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