Computes the complex arc hyperbolic cosine.
#include <complex.h>
double complex cacosh (z)
double complex z;
float complex cacoshf (z)
float complex z;
long double complex cacoshl (z)
long double complex z;The cacosh, cacoshf, or cacoshl subroutine computes the complex arc hyperbolic cosine of the z parameter, with a branch cut at values less than 1 along the real axis.
| Item | Description |
|---|---|
| z | Specifies the value to be computed. |
The cacosh, cacoshf, or cacoshl subroutine returns the complex arc hyperbolic cosine value, in the range of a half-strip of non-negative values along the real axis and in the interval [-i pi , +i pi ] along the imaginary axis.