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 6.7               2023-10-31                           ccos(3)