int old_item_num (int new_num, int affected_item_num, int mode);
* old_entry_num * set_entry_sizes * create_virtual_node * check_left * check_right * directory_part_size * get_num_ver * set_parameters * is_leaf_removable * are_leaves_removable * get_empty_nodes * get_lfree * get_rfree * is_left_neighbor_in_cache * decrement_key * get_far_parent * get_parents * can_node_be_removed * ip_check_balance * dc_check_balance_internal * dc_check_balance_leaf * dc_check_balance * check_balance * get_direct_parent * get_neighbors * fix_nodes * *