Function core::arch::x86::_mm256_sign_epi8

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

This is supported on x86 and target feature avx2 only.

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

Intel's documentation