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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

VERSIONS

These functions first appeared in glibc in version 2.1.

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

C99, POSIX.1-2001, POSIX.1-2008.

SEE ALSO

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

2022-10-09 Linux man-pages 6.01