vfms

Vector Fused Multiply Subtract

VFMS<c>.F32 <Qd>, <Qn>, <Qm>

Computes Vd = Vd - (Vn * Vm) with single rounding.

Details

The Vector Fused Multiply Subtract instruction computes Vd = Vd - (Vn * Vm) with single rounding.

Pseudocode Operation

Qd ← Qn - Qm
// Flags affected: N, Z, C, V

Example

VFMS.F32 q0, q1, q2

Encoding

Binary Layout
11110010
0
0
10
Vn
Vd
1100
N
Q
M
1
Vm
 
Format NEON 3-Reg
Opcode 0xF2200C10
Extension VFPv4 (SIMD)

Operands

  • Qd
    Dest/Acc
  • Qn
    First source 128-bit SIMD register
  • Qm
    Second source 128-bit SIMD register