frsqrts

Vector Floating-Point Reciprocal Sqrt Step

FRSQRTS <Vd>.<T>, <Vn>.<T>, <Vm>.<T>

Newton-Raphson step for reciprocal square root refinement.

Details

The Vector Floating-Point Reciprocal Sqrt Step instruction newton-Raphson step for reciprocal square root refinement.

Pseudocode Operation

// Newton-Raphson step for reciprocal square root refinement

Example

FRSQRTS v0.4s.T, v1.4s.T, v2.4s.T

Encoding

Binary Layout
0
Q
001110
1
sz
1
Rm
1111
1
Rn
Rd
 
Format SIMD Three Register
Opcode 0x0EA0FC00
Extension NEON (SIMD)

Operands

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