Function core::arch::x86::_mm_permutex2var_epi64

pub unsafe fn _mm_permutex2var_epi64(
    a: __m128i, 
    idx: __m128i, 
    b: __m128i
) -> __m128i

🔬 This is a nightly-only experimental API. (stdsimd #48556)

Available on x86 and target feature avx512f,avx512vl only.

Shuffle 64-bit integers in a and b across lanes using the corresponding selector and index in idx, and store the results in dst.

Intel’s documentation