ccos(3) Library Functions Manual ccos(3)

ccos, ccosf, ccosl - complex cosine function

Math library (libm, -lm)

#include <complex.h>
double complex ccos(double complex z);
float complex ccosf(float complex z);
long double complex ccosl(long double complex z);

These functions calculate the complex cosine of z.

The complex cosine function is defined as:

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

For an explanation of the terms used in this section, see attributes(7).

Interface Attribute Value
ccos (), ccosf (), ccosl () Thread safety MT-Safe

C11, POSIX.1-2008.

glibc 2.1. C99, POSIX.1-2001.

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

2024-05-02 Linux man-pages 6.9.1