pfsub

Packed Floating-Point Subtract

PFSUB mm, mm/m64

Subtracts packed floats (3DNow!).

Details

The Packed Floating-Point Subtract instruction subtracts packed floats (3DNow!).

Pseudocode Operation

// Subtracts packed floats (3DNow!)

Example

PFSUB mm, mm/m64

Encoding

Binary Layout
0F
+0
0F
+1
ModRM
+2
9A
+3
 
Format 3DNow!
Opcode 0F 0F /r 9A
Extension 3DNow!

Operands

  • dest
    64-bit MMX register
  • src
    64-bit MMX register or Memory operand