Computes the complex arc hyperbolic sine.
#include <complex.h> double complex casinh (z) double complex z; float complex casinhf (z) float complex z; long double complex casinhl (z) long double complex z;
The casinh, casinfh, and casinlh subroutines compute the complex arc hyperbolic sine of the z parameter, with branch cuts outside the interval [-i, +i] along the imaginary axis.
| z | Specifies the value to be computed. |
The casinh, casinfh, and casinlh subroutines return the complex arc hyperbolic sine 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.
The casin, casinf, or casinl Subroutine.