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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>cacosh (LIBM)</title>
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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="Complex.html#Complex" rel="up" title="Complex">
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</head>
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<body lang="en">
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<a name="cacosh"></a>
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<div class="header">
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<p>
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Next: <a href="carg.html#carg" accesskey="n" rel="next">carg</a>, Previous: <a href="cacos.html#cacos" accesskey="p" rel="prev">cacos</a>, Up: <a href="Complex.html#Complex" accesskey="u" rel="up">Complex</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="cacosh_002c-cacoshf_002d_002d_002dcomplex-arc-hyperbolic-cosine"></a>
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<h3 class="section">2.3 <code>cacosh</code>, <code>cacoshf</code>—complex arc hyperbolic cosine</h3>
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<a name="index-cacosh"></a>
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<a name="index-cacoshf"></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 <complex.h>
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double complex cacosh(double complex <var>z</var>);
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float complex cacoshf(float complex <var>z</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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These functions compute the complex arc hyperbolic cosine of <var>z</var>,
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with a branch cut at values less than 1 along the real axis.
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</p>
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<p><code>cacoshf</code> is identical to <code>cacosh</code>, except that it performs
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its calculations on <code>floats complex</code>.
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</p>
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<br>
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<p><strong>Returns</strong><br>
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These functions return the complex arc hyperbolic cosine value,
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in the range of a half-strip of non-negative values along the
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real axis and in the interval [-i * pi, +i * pi] along the
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imaginary axis.
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</p>
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<br>
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<p><strong>Portability</strong><br>
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<code>cacosh</code> and <code>cacoshf</code> are ISO C99
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</p>
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<br>
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