1#include "libm.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
17