_mm256_mask_mullo_epi16
Classification
AVX-512, Arithmetic, CPUID Test: AVX512BW
Header File
immintrin.h
Instruction
VPMULLW ymm {k}, ymm, ymm
Synopsis
 _mm256_mask_mullo_epi16(__m256i src, __mmask16 k, __m256i a, __m256i b);
Description
Multiply the packed 16-bit integers in "a" and "b", producing intermediate 32-bit integers, and store the low 16 bits of the intermediate integers in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set).
Operation
FOR j := 0 to 15
	i := j*16
	IF k[j]
		tmp[31:0] := SignExtend32(a[i+15:i]) * SignExtend32(b[i+15:i])
		dst[i+15:i] := tmp[15:0]
	ELSE
		dst[i+15:i] := src[i+15:i]
	FI
ENDFOR
dst[MAX:256] := 0