6.60.17.1 Paired-Single Arithmetic ¶

The table below lists the v2sf operations for which hardware support exists. a, b and c are v2sf values and x is an integral value.

C code	MIPS instruction
a + b	add.ps
a - b	sub.ps
-a	neg.ps
a * b	mul.ps
a * b + c	madd.ps
a * b - c	msub.ps
-(a * b + c)	nmadd.ps
-(a * b - c)	nmsub.ps
x ? a : b	movn.ps/movz.ps

Note that the multiply-accumulate instructions can be disabled using the command-line option -mno-fused-madd.