Function _mm512_mask3_fmsubadd_pd

#[target_feature(enable = "avx512f")]
pub const fn _mm512_mask3_fmsubadd_pd(a: __m512d, b: __m512d, c: __m512d, k: __mmask8) -> __m512d

Multiply packed double-precision (64-bit) floating-point elements in a and b, alternatively subtract and add packed elements in c from/to the intermediate result, and store the results in dst using writemask k (elements are copied from c when the corresponding mask bit is not set).

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