_X87_ROUND_MASK
return (control & _X87_ROUND_MASK);
if (round & ~_X87_ROUND_MASK)
control &= ~_X87_ROUND_MASK;
mxcsr &= ~(_X87_ROUND_MASK << _SSE_ROUND_SHIFT);
return (control & _X87_ROUND_MASK);
if (round & ~_X87_ROUND_MASK)
control &= ~_X87_ROUND_MASK;
mxcsr &= ~(_X87_ROUND_MASK << _SSE_ROUND_SHIFT);