SW_Backward
if (partial_status & SW_Backward)
partial_status |= (SW_Exc_Mask | SW_Summary | SW_Backward);
partial_status |= (SW_Summary | SW_Backward);
~(SW_Backward | SW_Summary | SW_Stack_Fault | SW_Precision |
partial_status |= (SW_Summary | SW_Backward);
partial_status &= ~(SW_Summary | SW_Backward);
partial_status |= (SW_Summary | SW_Backward);
partial_status &= ~(SW_Summary | SW_Backward);
partial_status &= ~(SW_Summary | SW_Backward);