_mm256_maskz_srai_epi64
Classification
AVX-512, Shift, CPUID Test: AVX512F
Header File
immintrin.h
Instruction
VPSRAQ ymm {z}, ymm, imm8
Synopsis
 _mm256_maskz_srai_epi64(__mmask8 k, __m256i a, unsigned int imm8);
Description
Shift packed 64-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 3
	i := j*64
	IF k[j]
		IF imm8[7:0] > 63
			dst[i+63:i] := (a[i+63] ? 0xFFFFFFFFFFFFFFFF : 0x0)
		ELSE
			dst[i+63:i] := SignExtend64(a[i+63:i] >> imm8[7:0])
		FI
	ELSE
		dst[i+63:i] := 0
	FI
ENDFOR
dst[MAX:256] := 0