NASM 2.05 based x86 Instruction Reference[ch030]
A.5.11 ANDPD: Bitwise Logical AND For Single FP ANDPD xmm1,xmm2/mem128 ; 66 0F 54 /r [WILLAMETTE,SSE2] ANDPD performs a bitwise logical AND of the two double-precision floating point values in the source and destination operand, and stores the result in the destination register. dst[0-63] := src[0-63] AND dst[0-63], dst[64-127] := src[64-127] AND dst[64-127]. The destination is an XMM register. The source operand can be either an XMM register or a 128-bit memory location.