_mm512_fmsubadd_pd
Classification
AVX-512, Arithmetic, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VFMSUBADD132PD zmm, zmm, zmm
Synopsis
 _mm512_fmsubadd_pd(__m512d a, __m512d b, __m512d c);
Description
Multiply packed double-precision (64-bit) floating-point elements in "a" and "b", alternatively subtract and add packed elements in "c" from/to the intermediate result, and store the results in "dst".
Operation
FOR j := 0 to 7
	i := j*64
	IF ((j & 1) == 0)
		dst[i+63:i] := (a[i+63:i] * b[i+63:i]) + c[i+63:i]
	ELSE
		dst[i+63:i] := (a[i+63:i] * b[i+63:i]) - c[i+63:i]
	FI
ENDFOR
dst[MAX:512] := 0