v4fnmaddss

Fused Negative Multiply-Add Scalar Single (4-iterations)

V4FNMADDSS xmm1 {k1}, xmm2+3, m128

4-way Negative FMA for Neural Nets (Scalar).

Details

The Fused Negative Multiply-Add Scalar Single (4-iterations) instruction 4-way Negative FMA for Neural Nets (Scalar).

Pseudocode Operation

// 4-way Negative FMA for Neural Nets (Scalar)

Example

V4FNMADDSS xmm1, xmm2+3, [rbp-16]

Encoding

Binary Layout
EVEX
+0
opcode
+4
ModRM
+5
 
Format EVEX
Opcode 62 F2 ... AB
Extension AVX-512-4FMAPS

Operands

  • dest
    128-bit XMM SIMD register
  • src1
    XMM register pair (consecutive even+odd registers)
  • src2
    128-bit memory operand