Function core::arch::x86::_mm256_srli_epi64

pub unsafe fn _mm256_srli_epi64<const IMM8: i32>(a: __m256i) -> __m256i

This is supported on x86 and target feature avx2 only.

将 a 中包装的 64 位整数右移 IMM8，同时将其移入零

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