_mm_maskz_sra_epi16
Classification
AVX-512, Shift, CPUID Test: AVX512BW
Header File
Instruction
VPSRAW xmm {z}, xmm, xmm
Synopsis
_mm_maskz_sra_epi16(__mmask8 k, __m128i a, __m128i count);
Description
Shift packed 16-bit integers in "a" right by "count" 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 7
i := j*16
IF k[j]
IF count[63:0] > 15
dst[i+15:i] := (a[i+15] ? 0xFFFF : 0x0)
ELSE
dst[i+15:i] := SignExtend16(a[i+15:i] >> count[63:0])
FI
ELSE
dst[i+15:i] := 0
FI
ENDFOR
dst[MAX:128] := 0