_mm256_permutexvar_pd
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512F
Header File
Instruction
VPERMPD ymm, ymm, ymm
Synopsis
_mm256_permutexvar_pd(__m256i idx, __m256d a);
Description
Shuffle double-precision (64-bit) floating-point elements in "a" across lanes using the corresponding index in "idx", and store the results in "dst".
Operation
FOR j := 0 to 3
i := j*64
id := idx[i+1:i]*64
dst[i+63:i] := a[id+63:id]
ENDFOR
dst[MAX:256] := 0