DragonFly On-Line Manual Pages

CTANH(3)	      DragonFly Library Functions Manual	      CTANH(3)

NAME

ctanh, ctanhf, ctanhl -- complex hyperbolic tangent

SYNOPSIS

#include <complex.h> double complex ctanh(double complex z); float complex ctanhf(float complex z); long double complex ctanhl(long double complex z);

DESCRIPTION

The ctanh(), ctanhf() and ctanhl() functions compute the complex hyper- bolic tangent of z. If z = x + iy, then ctanh(z) = (sinh(2x) + i sin(2y)) / (cosh(2x) + cos(2y)).

RETURN VALUES

The ctanh(), ctanhf() and ctanhl() functions return the complex hyper- bolic tangent of z.

SEE ALSO

ccosh(3), csinh(3)

STANDARDS

The ctanh(), ctanhf() and ctanhl() functions conform to ISO/IEC 9899:1999 (``ISO C99''). DragonFly 4.3 June 5, 2013 DragonFly 4.3