pub fn _mm256_maskz_extracti64x2_epi64(
    k: __mmask8,
    a: __m256i,
    const IMM8: i32,
) -> __m128iAvailable on x86 and target feature 
avx512dq and target feature avx512vl only.Expand description
Extracts 128 bits (composed of 2 packed 64-bit integers) from a, selected with IMM8, and stores the result in dst using zeromask k (elements are zeroed out if the corresponding bit is not set).