pub unsafe fn _mm256_madd52hi_epu64(
    a: __m256i,
    b: __m256i,
    c: __m256i
) -> __m256i
🔬 This is a nightly-only experimental API. (stdsimd #48556)
Available on x86 and target feature avx512ifma,avx512vl only.
Expand description

Multiply packed unsigned 52-bit integers in each 64-bit element of b and c to form a 104-bit intermediate result. Add the high 52-bit unsigned integer from the intermediate result with the corresponding unsigned 64-bit integer in a, and store the results in dst.

Intel’s documentation