CCOS(3) Linux Programmer s Manual CCOS(3)

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.


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

COLOPHON This page is part of release 3.22 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at

2008-08-11 CCOS(3)