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97 lines
3.5 KiB
HTML
97 lines
3.5 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>sinh (LIBM)</title>
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<meta name="description" content="sinh (LIBM)">
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<meta name="keywords" content="sinh (LIBM)">
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<link href="index.html#Top" rel="start" title="Top">
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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="sqrt.html#sqrt" rel="next" title="sqrt">
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<link href="sin.html#sin" rel="prev" title="sin">
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</head>
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<body lang="en">
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<a name="sinh"></a>
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<div class="header">
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<p>
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Next: <a href="sqrt.html#sqrt" accesskey="n" rel="next">sqrt</a>, Previous: <a href="sin.html#sin" accesskey="p" rel="prev">sin</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="sinh_002c-sinhf_002d_002d_002dhyperbolic-sine"></a>
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<h3 class="section">1.54 <code>sinh</code>, <code>sinhf</code>—hyperbolic sine</h3>
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<a name="index-sinh"></a>
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<a name="index-sinhf"></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 sinh(double <var>x</var>);
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float sinhf(float <var>x</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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<code>sinh</code> computes the hyperbolic sine of the argument <var>x</var>.
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Angles are specified in radians. <code>sinh</code>(<var>x</var>) is defined as
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</p><div class="smallexample">
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<pre class="smallexample"> (exp(<var>x</var>) - exp(-<var>x</var>))/2
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</pre></div>
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<p><code>sinhf</code> is identical, save that it takes and returns <code>float</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 hyperbolic sine of <var>x</var> is returned.
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</p>
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<p>When the correct result is too large to be representable (an
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overflow), <code>sinh</code> returns <code>HUGE_VAL</code> with the
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appropriate sign, and sets the global value <code>errno</code> to
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<code>ERANGE</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>sinh</code> is ANSI C.
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<code>sinhf</code> is an extension.
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</p>
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<br>
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</body>
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</html>
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