Function _mm512_mask_cmpord_pd_mask
#[target_feature(enable = "avx512f")]
pub fn _mm512_mask_cmpord_pd_mask(k1: __mmask8, a: __m512d, b: __m512d) -> __mmask8Compare packed double-precision (64-bit) floating-point elements in a and b to see if neither is NaN, and store the results in mask vector k using zeromask k1 (elements are zeroed out when the corresponding mask bit is not set).