ccos(3) — Linux manual page

ccos(3)                  Library Functions Manual                 ccos(3)

NAME         top

       ccos, ccosf, ccosl - complex cosine function

LIBRARY         top

       Math library (libm, -lm)

SYNOPSIS         top

       #include <complex.h>

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

DESCRIPTION         top

       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         top

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌──────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                            │ Attribute     │ Value   │
       ├──────────────────────────────────────┼───────────────┼─────────┤
       │ ccos(), ccosf(), ccosl()             │ Thread safety │ MT-Safe │
       └──────────────────────────────────────┴───────────────┴─────────┘

STANDARDS         top

       C11, POSIX.1-2008.

HISTORY         top

       glibc 2.1.  C99, POSIX.1-2001.

SEE ALSO         top

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

COLOPHON         top

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Linux man-pages 6.15            2025-05-17                        ccos(3)

Pages that refer to this page: cacos(3),  catan(3),  cos(3),  cosh(3),  csin(3),  ctan(3),  complex(7)

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