_mm512_madd_epi16
Classification
AVX-512, Arithmetic, CPUID Test: AVX512BW
Header File
immintrin.h
Instruction
VPMADDWD zmm, zmm, zmm
Synopsis
 _mm512_madd_epi16(__m512i a, __m512i b);
Description
Multiply packed signed 16-bit integers in "a" and "b", producing intermediate signed 32-bit integers. Horizontally add adjacent pairs of intermediate 32-bit integers, and pack the results in "dst".
Operation
FOR j := 0 to 15
	i := j*32
	dst[i+31:i] := SignExtend32(a[i+31:i+16]*b[i+31:i+16]) + SignExtend32(a[i+15:i]*b[i+15:i])
ENDFOR
dst[MAX:512] := 0