The code snippets appear to be full of mistakes. E. g. filter_vec_avx2 doesn't declare the loop variable i and stores input elements into the output instead of

The code snippets appear to be full of mistakes. E. g. filter_vec_avx2 doesn't declare the loop variable i and stores input elements into the output instead of their indices. Or from_u32x8 has a DataType instead of __m256i and [u32; __m256i] instead of [u32; 8].