ccos, ccosf, ccosl - complex cosine function

#include <complex.h> I double complex ccos(double complex z );
I float complex ccosf(float complex z );
I long double complex ccosl(long double complex z ); Link with -lm.

The complex cosine function ccos(z) is defined as (exp(i*z)+exp(-i*z))/2.

C99

cabs(3), csin(3), ctan(3), complex(7)