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¶

This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.