Function _mm256_mask_set1_epi64

pub unsafe fn _mm256_mask_set1_epi64(
    src: __m256i,
    k: __mmask8,
    a: i64,
) -> __m256i

🔬This is a nightly-only experimental API. (stdarch_x86_avx512 #111137)

Available on (x86 or x86-64) and target feature avx512f,avx512vl and x86 only.

Broadcast 64-bit integer 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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