Calculates the arc hyperbolic cosine of a complex number.

[Format]

#include <complex.h>

float complex cacoshf(float complex z);

double complex cacosh(double complex z);

long double complex cacoshl(long double complex z);

[Parameters]

z Complex number for which arc hyperbolic cosine is to be computed

[Return values]

Complex arc hyperbolic cosine of z

[Remarks]

The cacoshf function returns the arc hyperbolic cosine in the range [0, π].