Function _mm512_mask_compressstoreu_pd
#[target_feature(enable = "avx512f")]
pub unsafe fn _mm512_mask_compressstoreu_pd(base_addr: *mut f64, k: __mmask8, a: __m512d)Contiguously store the active double-precision (64-bit) floating-point elements in a (those with their respective bit set in writemask k) to unaligned memory at base_addr.