pub unsafe fn _mm256_mask_cmpge_epu64_mask(
    k1: __mmask8,
    a: __m256i,
    b: __m256i
) -> __mmask8
🔬This is a nightly-only experimental API. (stdarch_x86_avx512 #111137)
Available on (x86 or x86-64) and target feature avx512f,avx512vl and x86 only.
Expand description

Compare packed unsigned 64-bit integers in a and b for greater-than-or-equal, 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