_mm_permutexvar_ph
Classification
AVX-512, Miscellaneous, CPUID Test: AVX512_FP16
Header File
Instruction
VPERMW xmm, xmm, xmm
Synopsis
_mm_permutexvar_ph(__m128i idx, __m128h a);
Description
Shuffle half-precision (16-bit) floating-point elements in "a" using the corresponding index in "idx", and store the results in "dst".
Operation
FOR j := 0 to 7
i := j*16
id := idx[i+2:i]
dst.fp16[j] := a.fp16[id]
ENDFOR
dst[MAX:128] := 0