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CCOS(3)                    Linux Programmer's Manual                   CCOS(3)



NAME
       ccos, ccosf, ccosl - complex cosine function

SYNOPSIS
       #include <&lt;complex.h>&gt;

       double complex ccos(double complex z);
       float complex ccosf(float complex z);
       long double complex ccosl(long double complex z);

       Link with -lm.

DESCRIPTION
       The complex cosine function is defined as:

           ccos(z) = (exp(i * z) + exp(-i * z)) / 2

CONFORMING TO
       C99.

SEE ALSO
       cabs(3), csin(3), ctan(3), complex(7)

COLOPHON
       This  page  is  part of release 3.05 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.



                                  2007-12-26                           CCOS(3)