NASM 2.05 based x86 Instruction Reference[ch240]

A.5.216 PFMIN: Packed Single-Precision FP Minimum PFMIN mm1,mm2/m64 ; 0F 0F /r 94 [PENT,3DNOW] PFMIN returns the lower of each pair of single-precision FP values. If the lower value is zero, it is returned as positive zero.