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 .