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ccos

Section: C Library Functions (3)
Updated: 202-0-08
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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	M-Safe

C11, POSIX.-2008.

glibc 2.1. C99, POSIX.-2001.