1#include <float.h>
 2#include <fenv.h>
 3
 4int __flt_rounds()
 5{
 6	switch (fegetround()) {
 7#ifdef FE_TOWARDZERO
 8	case FE_TOWARDZERO: return 0;
 9#endif
10	case FE_TONEAREST: return 1;
11#ifdef FE_UPWARD
12	case FE_UPWARD: return 2;
13#endif
14#ifdef FE_DOWNWARD
15	case FE_DOWNWARD: return 3;
16#endif
17	}
18	return -1;
19}