1 .\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
3 .\" SPDX-License-Identifier: GPL-1.0-or-later
5 .TH CTANH 3 2021-03-22 GNU "Linux Programmer's Manual"
7 ctanh, ctanhf, ctanhl \- complex hyperbolic tangent
10 .RI ( libm ", " \-lm )
13 .B #include <complex.h>
15 .BI "double complex ctanh(double complex " z );
16 .BI "float complex ctanhf(float complex " z );
17 .BI "long double complex ctanhl(long double complex " z );
20 These functions calculate the complex hyperbolic tangent of
23 The complex hyperbolic tangent function is defined
28 ctanh(z) = csinh(z) / ccosh(z)
32 These functions first appeared in glibc in version 2.1.
34 For an explanation of the terms used in this section, see
42 Interface Attribute Value
47 T} Thread safety MT-Safe
53 C99, POSIX.1-2001, POSIX.1-2008.