Function core::arch::x86_64::_mm256_packs_epi16

pub unsafe fn _mm256_packs_epi16(a: __m256i, b: __m256i) -> __m256i

This is supported on x86-64 and target feature avx2 only.

Converts packed 16-bit integers from a and b to packed 8-bit integers using signed saturation

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