ccos(3) - Linux man page

Name

ccos, ccosf, ccosl - complex cosine function

#include <complex.h>

double complex ccos(double complex z);
float complex ccosf(float complex z);
long double complex ccosl(long double complex z);

Link with -lm.

The complex cosine function is defined as:

ccos(z) = (exp(i * z) + exp(-i * z)) / 2

These functions first appeared in glibc in version 2.1.

C99.

catan(3), cos(3), cosh(3)