ccos, ccosf, ccosl - complex cosine function

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

       These functions calculate the complex cosine of z.

       The complex cosine function is defined as:

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

       glibc 2.1.  C99, POSIX.1-2001.

       Math library (libm, -lm)

       ccos, ccosf, ccosl - complex cosine function

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

Linux man-pages 6.9.1                              2024-05-02                                            ccos(3)

       C11, POSIX.1-2008.

#include<complex.h>doublecomplexccos(doublecomplexz);floatcomplexccosf(floatcomplexz);longdoublecomplexccosl(longdoublecomplexz);