_mm512_mask_srai_epi16
Classification
AVX-512, Shift, CPUID Test: AVX512BW
Header File
Instruction
VPSRAW zmm {k}, zmm, imm8
Synopsis
_mm512_mask_srai_epi16(__m512i src, __mmask32 k, __m512i a, unsigned int imm8);
Description
Shift packed 16-bit integers in "a" right by "imm8" while shifting in sign bits, and store the results in "dst" using writemask "k" (elements are copied from "src" when the corresponding mask bit is not set).
Operation
FOR j := 0 to 31
i := j*16
IF k[j]
IF imm8[7:0] > 15
dst[i+15:i] := (a[i+15] ? 0xFFFF : 0x0)
ELSE
dst[i+15:i] := SignExtend16(a[i+15:i] >> imm8[7:0])
FI
ELSE
dst[i+15:i] := src[i+15:i]
FI
ENDFOR
dst[MAX:512] := 0