SUBSD
Usage: SUBSD dest,src Modifies flags: None
Subtracts the low double-precision floating-point value in the 'src' (second operand) from the low double-precision floating-point value in the 'dest' (first operand), and stores the double-precision floating-point result in the 'dest' operand.
Scalar Single-FP Subtract
SUBSD xmm1,xmm2/m128 ; F2 0F 5C /r [WILLAMETTE,SSE2]
SUBSD subtracts the low-order double-precision FP value of the source operand from that of the destination operand, and stores the result in the destination operation. The high quadword is unchanged.
The 'src' operand can be an XMM register or a 64-bit memory location. The 'dest' is an XMM register.
EXAMPLE:
subsd xmm1 xmm2