Computes the complex arc cosine.
#include <complex.h>
double complex cacos (z)
double complex z;
float complex cacosf (z)
float complex z;
long double complex cacosl (z)
long double complex z;The cacos, cacosf, or cacosl subroutine computes the complex arc cosine of z, with branch cuts outside the interval [–1, +1] along the real axis.
| Item | Description |
|---|---|
| z | Specifies the value to be computed. |
The cacos, cacosf, or cacosl subroutine returns the complex arc cosine value, in the range of a strip mathematically unbounded along the imaginary axis and in the interval [0, pi] along the real axis.