Function do_copy_diff_qu4_qu4

dnn/src/naive/relayout_format/opr_impl.cpp:304–316

}

void do_copy_diff_qu4_qu4(const TensorND& dst, const TensorND& src) {
    auto isrc =
            tensor_iter_valonly<DTypeTrait<dtype::Quantized4Asymm>::ctype>(src).begin();
    auto idst =
            tensor_iter_valonly<DTypeTrait<dtype::Quantized4Asymm>::ctype>(dst).begin();
    auto src_dt_parm = src.layout.dtype.param<dtype::Quantized4Asymm>();
    auto dst_dt_parm = dst.layout.dtype.param<dtype::Quantized4Asymm>();
    for (size_t i = 0, it = dst.layout.total_nr_elems(); i < it; ++i) {
        *idst = dst_dt_parm.quantize(src_dt_parm.dequantize(uint8_t(*isrc)));
        ++idst;
        ++isrc;
    }
}

void check_layout_and_canonize(TensorLayout& src, TensorLayout& dst) {
    megdnn_assert(dst.is_non_overlapping_strong());