pub unsafe fn _mm256_mask_cvtepi16_storeu_epi8(
    mem_addr: *mut i8,
    k: __mmask16,
    a: __m256i
🔬 This is a nightly-only experimental API. (stdsimd #48556)
Available on x86-64 and target feature avx512bw,avx512vl only.
Expand description

Convert packed 16-bit integers in a to packed 8-bit integers with truncation, and store the active results (those with their respective bit set in writemask k) to unaligned memory at base_addr.

Intel’s documentation