GNU Info

(nasm.info)Section B.4.258

---

Next: Section B.4.259 Prev: Section B.4.257 Up: Section B.4

---

Enter node , (file) or (file)node

B.4.258. `PSUBx': Subtract Packed Integers
------------------------------------------

     PSUBB mm1,mm2/m64             ; 0F F8 /r             [PENT,MMX]
     PSUBW mm1,mm2/m64             ; 0F F9 /r             [PENT,MMX]
     PSUBD mm1,mm2/m64             ; 0F FA /r             [PENT,MMX]
     PSUBQ mm1,mm2/m64             ; 0F FB /r        [WILLAMETTE,SSE2]

     PSUBB xmm1,xmm2/m128          ; 66 0F F8 /r     [WILLAMETTE,SSE2]
     PSUBW xmm1,xmm2/m128          ; 66 0F F9 /r     [WILLAMETTE,SSE2]
     PSUBD xmm1,xmm2/m128          ; 66 0F FA /r     [WILLAMETTE,SSE2]
     PSUBQ xmm1,xmm2/m128          ; 66 0F FB /r     [WILLAMETTE,SSE2]

   `PSUBx' subtracts packed integers in the source operand from those in
the destination operand. It doesn't differentiate between signed and
unsigned integers, and doesn't set any of the flags.

   * `PSUBB' operates on byte sized elements.

   * `PSUBW' operates on word sized elements.

   * `PSUBD' operates on doubleword sized elements.

   * `PSUBQ' operates on quadword sized elements.