Function core_arch::x86::_mm256_cvtepu8_epi64

pub unsafe fn _mm256_cvtepu8_epi64(a: __m128i) -> __m256i

This is supported on x86 and target feature avx2 only.

Zero-extend the lower four unsigned 8-bit integers in a to 64-bit integers. The upper twelve elements of a are unused.

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