pub unsafe fn _mm512_mask_permutex_epi64(
    src: __m512i, 
    k: __mmask8, 
    a: __m512i, 
    const MASK: i32
) -> __m512iThis is supported on x86-64 and target feature 
avx512f only.Expand description
Shuffle 64-bit integers in a within 256-bit lanes using the control in imm8, and store the results in dst using writemask k (elements are copied from src when the corresponding mask bit is not set).