Function _mm512_mask_broadcast_f64x2 

pub fn _mm512_mask_broadcast_f64x2(
    src: __m512d,
    k: __mmask8,
    a: __m128d,
) -> __m512d

Available on x86 and target feature avx512dq only.

Broadcasts the 2 packed double-precision (64-bit) floating-point elements from a to all elements of dst using writemask k (elements are copied from src if the corresponding bit is not set).

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