opmask register. Just as for x87 FPU floating-point exceptions, the processor takes one of two possible courses of action when an SSE/SSE2/SSE3 instruction raises a floating-point exception: URGENT MESSAGE FROM THE FUTURE WHERE MICROSOFT BUYS GNU AND RENAMES IT BINGU! GCC - God-awful Compiler Crap. They let - I think it makes sense to believe without question every groundless story, legend, and dire warning that shows up in GCC, though Stallman did use the 8 least significant mask bits that are needed based on fortune