pmullw

Packed Multiply Low Word

PMULLW xmm1, xmm2/m128

Multiplies 16-bit words and stores low 16-bit result.

Details

The Packed Multiply Low Word instruction multiplies 16-bit words and stores low 16-bit result.

Pseudocode Operation

// Multiplies 16-bit words and stores low 16-bit result

Example

PMULLW xmm1, xmm2/m128

Encoding

Binary Layout
66
+0
0F
+1
D5
+2
 
Format SSE2
Opcode 66 0F D5
Extension SSE2

Operands

  • dest
    128-bit XMM SIMD register
  • src
    128-bit XMM SIMD register or Memory operand