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fea681da 1.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
2297bf0e 2.\"
95fb8859 3.\" SPDX-License-Identifier: GPL-1.0-or-later
fea681da 4.\"
4c1c5274 5.TH ccosh 3 (date) "Linux man-pages (unreleased)"
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6.SH NAME
7ccosh, ccoshf, ccoshl \- complex hyperbolic cosine
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8.SH LIBRARY
9Math library
8fc3b2cf 10.RI ( libm ", " \-lm )
fea681da 11.SH SYNOPSIS
c7db92b9 12.nf
fea681da 13.B #include <complex.h>
68e4db0a 14.PP
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15.BI "double complex ccosh(double complex " z );
16.BI "float complex ccoshf(float complex " z );
17.BI "long double complex ccoshl(long double complex " z );
c7db92b9 18.fi
fea681da 19.SH DESCRIPTION
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20These functions calculate the complex hyperbolic cosine of
21.IR z .
847e0d88 22.PP
6b41ea97 23The complex hyperbolic cosine function is defined as:
207050fa 24.PP
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25.in +4n
26.EX
27ccosh(z) = (exp(z)+exp(\-z))/2
28.EE
29.in
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30.SH VERSIONS
31These functions first appeared in glibc in version 2.1.
3113c7f3 32.SH STANDARDS
9a74e018 33C99, POSIX.1-2001, POSIX.1-2008.
47297adb 34.SH SEE ALSO
fea681da 35.BR cabs (3),
f54fb0fa 36.BR cacosh (3),
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37.BR csinh (3),
38.BR ctanh (3),
a8bda636 39.BR complex (7)