Function _mm512_mask_broadcastss_ps 

pub fn _mm512_mask_broadcastss_ps(
    src: __m512,
    k: __mmask16,
    a: __m128,
) -> __m512

Available on x86 and target feature avx512f only.

Broadcast the low single-precision (32-bit) floating-point element from a to all elements of dst using writemask k (elements are copied from src when the corresponding mask bit is not set).

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