#define near asm volatile("fldcw _RoundNear")
#define down asm volatile("fldcw _RoundDown")
#define up   asm volatile("fldcw _RoundUp")
#define chop asm volatile("fldcw _RoundChop")
int _RoundNear =0x133a;
int _RoundDown =0x173a;
int _RoundUp   =0x1b3a;
int _RoundChop =0x1f3a;