_mm256_maskz_srai_epi16
Classification
AVX-512, Shift, CPUID Test: AVX512BW
Header File
Instruction
VPSRAW ymm {z}, ymm, imm8
Synopsis
_mm256_maskz_srai_epi16(__mmask16 k, __m256i 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 zeromask "k" (elements are zeroed out when the corresponding mask bit is not set).
Operation
FOR j := 0 to 15
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] := 0
FI
ENDFOR
dst[MAX:256] := 0