casinh.c\complex\src - musl - musl - an implementation of the standard library for Linux-based systems

#include "libm.h"
/* asinh(z) = -i asin(i z) */
double complex casinh(double complex z)
{
	z = casin(CMPLX(-cimag(z), creal(z)));
	return CMPLX(cimag(z), -creal(z));
}