A.5.214 PFCMPxx: Packed Single-Precision FP Compare
PFCMPEQ mm1,mm2/m64 ; 0F 0F /r B0 [PENT,3DNOW]
PFCMPGE mm1,mm2/m64 ; 0F 0F /r 90 [PENT,3DNOW]
PFCMPGT mm1,mm2/m64 ; 0F 0F /r A0 [PENT,3DNOW]
The PFCMPxx instructions compare the packed single-point FP values in
the source and destination operands, and set the destination according
to the result. If the condition is true, the destination is set to all
1s, otherwise it's set to all 0s.
- PFCMPEQ tests whether dst == src;
- PFCMPGE tests whether dst >= src;
- PFCMPGT tests whether dst > src.