ccos, ccosf, ccosl - complex cosine function
double complex ccos(double complex
float complex ccosf(float complex
long double complex ccosl(long double complex
These functions calculate the complex cosine of
The complex cosine function is defined as:
ccos(z) = (exp(i * z) + exp(-i * z)) / 2
These functions first appeared in glibc in version 2.1.
C99, POSIX.1-2001, POSIX.1-2008.
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