_mm_maskz_srl_epi64
Classification
AVX-512, Shift, CPUID Test: AVX512F
Header File
Instruction
VPSRLQ xmm {z}, xmm, xmm
Synopsis
_mm_maskz_srl_epi64(__mmask8 k, __m128i a, __m128i count);
Description
Shift packed 64-bit integers in "a" right by "count" while shifting in zeros, 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 1
i := j*64
IF k[j]
IF count[63:0] > 63
dst[i+63:i] := 0
ELSE
dst[i+63:i] := ZeroExtend64(a[i+63:i] >> count[63:0])
FI
ELSE
dst[i+63:i] := 0
FI
ENDFOR
dst[MAX:128] := 0