Complex power function
#include <complex.h> double complex cpow(double complex x, complex double z); float complex cpowf(float complex x, complex float z); long double complex cpowl(long double complex x, complex long double z); Link with -lm.
The function calculates x raised to the power z. (With a branch cut for x along the negative real axis.)
These functions first appeared in glibc in version 2.1.
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