# Function core::arch::x86_64::_mm_mask_cmplt_epu64_mask

source ·

    pub unsafe fn _mm_mask_cmplt_epu64_mask(
        k1: __mmask8,
        a: __m128i,
        b: __m128i
    ) -> __mmask8

🔬This is a nightly-only experimental API. (`stdarch_x86_avx512` #111137)
Available on (x86 or x86-64) and target feature `avx512f,avx512vl` and x86-64 only.
Expand description

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).

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