.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
.\"
.\" %%%LICENSE_START(GPL_NOVERSION_ONELINE)
.\" Distributed under GPL
.\" %%%LICENSE_END
.\"
.TH CCOSH 3 2017-09-15 "" "Linux Programmer's Manual"
.SH NAME
ccosh, ccoshf, ccoshl \- complex hyperbolic cosine
.SH SYNOPSIS
.B #include <complex.h>
.PP
.BI "double complex ccosh(double complex " z ");"
.br
.BI "float complex ccoshf(float complex " z ");"
.br
.BI "long double complex ccoshl(long double complex " z ");"
.PP
Link with \fI\-lm\fP.
.SH DESCRIPTION
These functions calculate the complex hyperbolic cosine of
.IR z .
.PP
The complex hyperbolic cosine function is defined as:
.PP
.nf
    ccosh(z) = (exp(z)+exp(\-z))/2
.fi
.SH VERSIONS
These functions first appeared in glibc in version 2.1.
.SH CONFORMING TO
C99, POSIX.1-2001, POSIX.1-2008.
.SH SEE ALSO
.BR cabs (3),
.BR cacosh (3),
.BR csinh (3),
.BR ctanh (3),
.BR complex (7)
.SH COLOPHON
This page is part of release 4.15 of the Linux
.I man-pages
project.
A description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
\%https://www.kernel.org/doc/man\-pages/.