C programming/complex.h/ccos

Prototypes double complex cacos(double complex z); float complex cacosf(float complex z); long double complex cacosl(long double complex z); Description The C library provides with the ccos function which gives the cosine of a complex number.It is included in the header file complex.h. This function returns a double-precision floating point number. The ccos function can be expressed as: ccosz = (exp (i * z) + exp (-i * z))/2"ccos(3) - Linux man page". die.net. Retrieved 20 September 2011. References deep