pub unsafe fn _mm256_mask_cmpeq_epi8_mask(
    k1: __mmask32,
    a: __m256i,
    b: __m256i
) -> __mmask32
🔬This is a nightly-only experimental API. (stdsimd #48556)
Available on (x86 or x86-64) and target feature avx512bw,avx512vl and x86-64 only.
Expand description

Compare packed signed 8-bit integers in a and b for equality, 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