# Function core::arch::x86_64::_mm512_mask_cmplt_epu64_mask[−][src]

    pub unsafe fn _mm512_mask_cmplt_epu64_mask(
        k1: __mmask8,
        a: __m512i,
        b: __m512i
    ) -> __mmask8

🔬 This is a nightly-only experimental API. (`stdsimd` #48556)
This is supported on x86-64 and target feature `avx512f` only.

Compare packed unsigned 64-bit integers in a and b for less-than, 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