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#include "complex_impl.h"

// FIXME: Hull et al. "Implementing the complex arcsine and arccosine functions using exception handling" 1997

/* acos(z) = pi/2 - asin(z) */

double complex cacos(double complex z)
{
	z = casin(z);
	return CMPLX(M_PI_2 - creal(z), -cimag(z));
}

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