- if (gtnets_nodes_.find(src_node) == gtnets_nodes_.end()){
- fprintf(stderr, "node %d not found\n", src_node);
- return -1;
- }
- if (gtnets_nodes_.find(dst_node) == gtnets_nodes_.end()){
- fprintf(stderr, "node %d not found\n", dst_node);
- return -1;
- }
+ xbt_assert1(!(gtnets_nodes_.find(src_node) == gtnets_nodes_.end()), "Node %d not found", src_node);
+ xbt_assert1(!(gtnets_nodes_.find(dst_node) == gtnets_nodes_.end()), "Node %d not found", dst_node);