1#include "complex_impl.h"
 2
 3#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
 4long double complex cacosl(long double complex z)
 5{
 6	return cacos(z);
 7}
 8#else
 9// FIXME
10#define PI_2 1.57079632679489661923132169163975144L
11long double complex cacosl(long double complex z)
12{
13	z = casinl(z);
14	return CMPLXL(PI_2 - creall(z), -cimagl(z));
15}
16#endif