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.\" Copyright, the authors of the Linux man-pages project
.\"
.\" SPDX-License-Identifier: GPL-1.0-or-later
.\"
.TH ccosh 3 2025-05-17 "Linux man-pages (unreleased)"
.SH NAME
ccosh, ccoshf, ccoshl \- complex hyperbolic cosine
.SH LIBRARY
Math library
.RI ( libm ,\~ \-lm )
.SH SYNOPSIS
.nf
.B #include <complex.h>
.P
.BI "double complex ccosh(double complex " z );
.BI "float complex ccoshf(float complex " z );
.BI "long double complex ccoshl(long double complex " z );
.fi
.SH DESCRIPTION
These functions calculate the complex hyperbolic cosine of
.IR z .
.P
The complex hyperbolic cosine function is defined as:
.P
.in +4n
.EX
ccosh(z) = (exp(z)+exp(\-z))/2
.EE
.in
.SH STANDARDS
C11, POSIX.1-2008.
.SH HISTORY
glibc 2.1.
C99, POSIX.1-2001.
.SH SEE ALSO
.BR cabs (3),
.BR cacosh (3),
.BR csinh (3),
.BR ctanh (3),
.BR complex (7)
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