Function _mm256_maskz_cvtepi64_epi8

pub fn _mm256_maskz_cvtepi64_epi8(k: __mmask8, a: __m256i) -> __m128i

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

Convert packed 64-bit integers in a to packed 8-bit integers with truncation, and store the results in dst using zeromask k (elements are zeroed out when the corresponding mask bit is not set).

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