Function _mm512_maskz_loadu_pd

#[target_feature(enable = "avx512f")]
pub const unsafe fn _mm512_maskz_loadu_pd(k: __mmask8, mem_addr: *const f64) -> __m512d

Load packed double-precision (64-bit) floating-point elements from memory into dst using zeromask k (elements are zeroed out when the corresponding mask bit is not set). mem_addr does not need to be aligned on any particular boundary.

Intel's documentation