1 .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
3 .\" SPDX-License-Identifier: GPL-1.0-or-later
5 .TH ccosh 3 (date) "Linux man-pages (unreleased)"
7 ccosh, ccoshf, ccoshl \- complex hyperbolic cosine
10 .RI ( libm ", " \-lm )
13 .B #include <complex.h>
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 );
20 These functions calculate the complex hyperbolic cosine of
23 The complex hyperbolic cosine function is defined as:
27 ccosh(z) = (exp(z)+exp(\-z))/2
31 These functions were added in glibc 2.1.
33 C99, POSIX.1-2001, POSIX.1-2008.