.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) .\" Distributed under GPL .\" .TH CTANH 3 2002-07-28 "" "Linux Programmer's Manual" .SH NAME ctanh, ctanhf, ctanhl \- complex hyperbolic tangent .SH SYNOPSIS .B #include .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 ctanh(z) is defined mathematically as csinh(z) / ccosh(z). .SH "CONFORMING TO" C99 .SH "SEE ALSO" .BR cabs (3), .BR ccosh (3), .BR csinh (3), .BR complex (7)