Function _mm512_maskz_broadcast_i64x4 

pub fn _mm512_maskz_broadcast_i64x4(k: __mmask8, a: __m256i) -> __m512i

Available on x86-64 and target feature avx512f only.

Broadcast the 4 packed 64-bit integers from a to all elements of dst using zeromask k (elements are zeroed out when the corresponding mask bit is not set).

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