Function _mm512_mask_scalef_ph 

pub fn _mm512_mask_scalef_ph(
    src: __m512h,
    k: __mmask32,
    a: __m512h,
    b: __m512h,
) -> __m512h

Available on x86 and target feature avx512fp16 only.

Scale the packed half-precision (16-bit) floating-point elements in a using values from b, and store the results in dst using writemask k (elements are copied from src when the corresponding mask bit is not set).

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