Function _mm512_maskz_scalef_pd 

pub fn _mm512_maskz_scalef_pd(k: __mmask8, a: __m512d, b: __m512d) -> __m512d

Available on x86 and target feature avx512f only.

Scale the packed double-precision (64-bit) floating-point elements in a using values from b, and store the results in dst using zeromask k (elements are zeroed out when the corresponding mask bit is not set).

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