ccos(3) Library Functions Manual 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 │
├────────────────────────────────────────────┼───────────────┼─────────┤
│ ccos(), ccosf(), ccosl() │ 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)
Linux man-pages 6.9.1 2024-05-02 ccos(3)
Generated by dwww version 1.16 on Tue Dec 16 04:27:20 CET 2025.