_mm256_mask3_fmadd_pd
Classification
AVX-512, Arithmetic, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VFMADD132PD ymm {k}, ymm, ymm
Synopsis
 _mm256_mask3_fmadd_pd(__m256d a, __m256d b, __m256d c, __mmask8 k);
Description
Multiply packed double-precision (64-bit) floating-point elements in "a" and "b", add the intermediate result to packed elements in "c", and store the results in "dst" using writemask "k" (elements are copied from "c" when the corresponding mask bit is not set).
Operation
FOR j := 0 to 3
	i := j*64
	IF k[j]
		dst[i+63:i] := (a[i+63:i] * b[i+63:i]) + c[i+63:i]
	ELSE
		dst[i+63:i] := c[i+63:i]
	FI
ENDFOR
dst[MAX:256] := 0