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Name

ccos, ccosf, ccosl - complex cosine function

Synopsis

#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.

Description

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

Versions

These functions first appeared in glibc in version 2.1.

Conforming to

C99.

See Also

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

Colophon

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