pub unsafe fn _mm_mask_permutexvar_epi8(
    src: __m128i,
    k: u16,
    idx: __m128i,
    a: __m128i
) -> __m128i
🔬This is a nightly-only experimental API. (stdsimd)
Available on x86-64 only.
Expand description

Shuffle 8-bit integers in a across lanes using the corresponding index in idx, and store the results in dst using writemask k (elements are copied from src when the corresponding mask bit is not set).

Intel’s documentation