.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
.\" Distributed under GPL
.\"
.TH CTANH 3 2008-08-11 "" "Linux Programmer's Manual"
.SH NAME
ctanh, ctanhf, ctanhl \- complex hyperbolic tangent
.SH SYNOPSIS
.B #include <complex.h>
.sp
.BI "double complex ctanh(double complex " z ");"
.br
.BI "float complex ctanhf(float complex " z );
.br
.BI "long double complex ctanhl(long double complex " z ");"
.sp
Link with \fI\-lm\fP.
.SH DESCRIPTION
The complex hyperbolic tangent function is defined
mathematically as:
.nf

    ctanh(z) = csinh(z) / ccosh(z)
.fi
.SH VERSIONS
These functions first appeared in glibc in version 2.1.
.SH "CONFORMING TO"
C99.
.SH "SEE ALSO"
.BR cabs (3),
.BR ccosh (3),
.BR csinh (3),
.BR complex (7)