NASM 2.05 based x86 Instruction Reference[ch292]
A.5.268 RCPPS: Packed Single-Precision FP Reciprocal RCPPS xmm1,xmm2/m128 ; 0F 53 /r [KATMAI,SSE] RCPPS returns an approximation of the reciprocal of the packed single- precision FP values from xmm2/m128. The maximum error for this approximation is: |Error| <= 1.5 x 2^-12