_mm256_cvtepi8_epi64
Classification
Header File
Instruction
VPMOVSXBQ ymm, xmm
Synopsis
_mm256_cvtepi8_epi64(__m128i a);
Description
Sign extend packed 8-bit integers in the low 8 bytes of "a" to packed 64-bit integers, and store the results in "dst".
Operation
FOR j := 0 to 3
i := 64*j
k := 8*j
dst[i+63:i] := SignExtend64(a[k+7:k])
ENDFOR
dst[MAX:256] := 0