Function exec_set_mesh_indexing

dnn/src/naive/mesh_indexing/opr_impl.cpp:154–167

/* ========================= SetMeshIndexing =========================== */
template <typename T>
void exec_set_mesh_indexing(
        const TensorND& data, const TensorND& value,
        const SetMeshIndexing::IndexDesc& desc) {
    auto iter = tensor_iter<T>(value).begin();
    size_t ndim = value.layout.ndim;
    auto ptr = data.ptr<T>();
    for (size_t idx = 0; idx < value.layout.total_nr_elems(); ++idx) {
        int index[TensorShape::MAX_NDIM];
        std::copy(iter.idx(), iter.idx() + ndim, index);
        size_t data_idx = get_index(data, value, desc, index);
        ptr[data_idx] = *iter;
        ++iter;
    }
}

void SetMeshIndexingImpl::exec(
        _megdnn_tensor_inout data, _megdnn_tensor_in value, const IndexDesc& desc,