SYNOPSIS
#include <complex.h> "double complex ccos(double complex "z");"
"float complex ccos(float complex "z");"
"long double complex ccos(long double complex "z");"
DESCRIPTION
The complex cosine function ccos(z) is defined as (exp(i*z)+exp(-i*z))/2.
"CONFORMING TO"
C99
"SEE ALSO"
cabs(3), ctan(3), csin(3
