ccos(3)

NAME
ccos, ccosf, ccosl - complex cosine function

LIBRARY
Math library (libm, -lm)

SYNOPSIS
#include <complex.h>

double complex ccos(double complex z);
float complex ccosf(float complex z);
long double complex ccosl(long double complex z);

DESCRIPTION
These functions calculate the complex cosine of z.

The complex cosine function is defined as:

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

ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value
 | Thread safety | MT-Safe

STANDARDS
C11, POSIX.1-2008.

HISTORY
glibc 2.1. C99, POSIX.1-2001.

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