forked from dolphin-emu/dolphin
		
	x86: round(-a*c +/- b) PowerPC: -round(a*c +/- b) If the rounding mode is set to +/- infinity, the order of round/negate matters.
x86: round(-a*c +/- b) PowerPC: -round(a*c +/- b) If the rounding mode is set to +/- infinity, the order of round/negate matters.