Function core_arch::x86_64::_mm256_sign_epi8

pub unsafe fn _mm256_sign_epi8(a: __m256i, b: __m256i) -> __m256i

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

Negates packed 8-bit integers in a when the corresponding signed 8-bit integer in b is negative, and returns the results. Results are zeroed out when the corresponding element in b is zero.

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