Computes the complex arc hyperbolic tangent.
#include <complex.h>
double complex catanh (z)
double complex z;
float complex catanhf (z)
float complex z;
long double complex catanhl (z)
long double complex z;The catanh, catanhf, and catanhl subroutines compute the complex arc hyperbolic tangent of z, with branch cuts outside the interval [-1, +1] along the real axis.
| Item | Description |
|---|---|
| z | Specifies the value to be computed. |
The catanh, catanhf, and catanhl subroutines return the complex arc hyperbolic tangent value, in the range of a strip mathematically unbounded along the real axis and in the interval [-i pi/2, +i pi/2] along the imaginary axis.