__SSE_EMASK_SHIFT
mxcsr |= FE_ALL_EXCEPT << __SSE_EMASK_SHIFT;
omask = (control | mxcsr >> __SSE_EMASK_SHIFT) & FE_ALL_EXCEPT;
mxcsr &= ~(mask << __SSE_EMASK_SHIFT);
omask = (control | mxcsr >> __SSE_EMASK_SHIFT) & FE_ALL_EXCEPT;
mxcsr |= mask << __SSE_EMASK_SHIFT;