VNSRA.WX

Vector Narrowing Shift Right Arithmetic

VNSRA.WX vd, vs2, rs1, vm

Arithmetically shifts 2*N-bit elements right and narrows to N-bits.

Details

Performs a narrowing operation, halving the result element width relative to the source. Optionally saturates the result. Active elements are determined by vl; masking by vm.

Pseudocode Operation

foreach(i < vl): vd[i] = (vs2[i] >>s rs1) & Mask(SEW);

Example

VNSRA.WX v1, v4, a0, v0.t

Encoding

Binary Layout
101101
31:26
vm
25
vs2
24:20
rs1
19:15
100
14:12
vd
11:7
1010111
6:0
 
Format OPIVX
Opcode 0x57
Extension V

Operands

  • vd
    Dest (SEW)
  • vs2
    Src Vector (2*SEW)
  • rs1
    Shift Amount