pub unsafe fn _mm256_mask_cmp_epi8_mask(
    k1: __mmask32,
    a: __m256i,
    b: __m256i,
    const IMM8: i32
) -> __mmask32
🔬 This is a nightly-only experimental API. (stdsimd #48556)
Available on x86 and target feature avx512bw,avx512vl only.
Expand description

Compare packed signed 8-bit integers in a and b based on the comparison operand specified by imm8, and store the results in mask vector k using zeromask k1 (elements are zeroed out when the corresponding mask bit is not set).

Intel’s documentation