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
     hyperbolic 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
     hyperbolic 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 4.1                    June 5, 2013                    DragonFly 4.1