xtn

Vector Extract Narrow

XTN <Vd>.<Tb>, <Vn>.<Ta>

Reads elements, narrows them, and writes to lower half of destination.

Details

The Vector Extract Narrow instruction reads elements, narrows them, and writes to lower half of destination.

Pseudocode Operation

// Reads elements, narrows them, and writes to lower half of destination

Example

XTN v0.4s.Tb, v1.4s.Ta

Encoding

Binary Layout
0
0
001111
0
size
10001
00
Rn
Rd
 
Format SIMD Shift Imm
Opcode 0x0F001200
Extension NEON (SIMD)

Operands

  • Vd
    Destination SIMD/FP vector register
  • Vn
    First source SIMD/FP vector register