# SUBPD
# Subtract Packed Double-Precision Floating-Point Values
| Opcode | Mnemonic | Description |
|---|---|---|
| 66 0F 5C /r | SUBPD xmm1, xmm2/m128 Subtract packed double-precision floating-point values in xmm2/m128 from xmm1. |
# Description
Performs an SIMD subtract of the two packed double-precision floating-point values in the source operand (second operand) from the two packed double-precision floating-point values in the destination operand (first operand), and stores the packed double-precision floating-point results in the destination operand. The source operand can be an XMM register or a 128-bit memory location. The destination operand is an XMM register. See Figure 11-3 in the IA-32 Intel Architecture Software Developer's Manual, Volume 1 for an illustration of an SIMD double-precision floating-point operation.
# Operation
Destination[0..63] = Destination[0..63] - Source[0..63];
Destination[64..127] = Destination[64..127] - Source[64..127];
1
2
3
2
3
| Instruction | Latency | Throughput | Execution Unit |
|---|---|---|---|
| CPUID | 0F3n/0F2n/069n | 0F3n/0F2n/069n | 0F2n |
| SUBPD xmm, xmm | 5/4/4 | 2/2/2 | FP_ADD |