cacoshl(3) - Linux man page
Name
cacosh, cacoshf, cacoshl - complex arc hyperbolic cosineSynopsis
#include <complex.h>double complex cacosh(double complex z);
float complex cacoshf(float complex z);
long double complex cacoshl(long double complex z);
Link with -lm.
Description
The cacosh() function calculates the complex acosh(). If y = cacosh(z), then z = ccosh(y). The imaginary part of y is chosen in the interval [-pi,pi]. The real part of y is chosen nonnegative.One has cacosh(z) = (0.5)*clog((1+z)/(1-z)).
