ccos (3)

#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.

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

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