Set the rounding mode bits of the MXCSR control and status register to the value in unsigned 32-bit integer
_MM_ROUND_xxxx. The rounding mode may contain any of the following flags: _MM_ROUND_NEAREST, _MM_ROUND_DOWN,
_MM_ROUND_UP, _MM_ROUND_TOWARD_ZERO.
Set the rounding mode bits of the MXCSR control and status register to the value in unsigned 32-bit integer _MM_ROUND_xxxx. The rounding mode may contain any of the following flags: _MM_ROUND_NEAREST, _MM_ROUND_DOWN, _MM_ROUND_UP, _MM_ROUND_TOWARD_ZERO.