src/complex/casinf.c


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#include "libm.h"

// FIXME

float complex casinf(float complex z)
{
	float complex w;
	float x, y;

	x = crealf(z);
	y = cimagf(z);
	w = CMPLXF(1.0 - (x - y)*(x + y), -2.0*x*y);
	float complex r = clogf(CMPLXF(-y, x) + csqrtf(w));
	return CMPLXF(cimagf(r), -crealf(r));
}