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+.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
+.\"
+.\" SPDX-License-Identifier: GPL-1.0-or-later
+.\"
+.TH ccosh 3 (date) "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)