Cosmetics.

diff --git a/mtp_graph.h b/mtp_graph.h
index b07e461..9b34248 100644 (file)
--- a/mtp_graph.h
+++ b/mtp_graph.h
@@ -37,18 +37,26 @@ class Vertex;
 class Edge;
 
 class MTPGraph {
+  // Uses the estimated vertex distances to the source to make all the
+  // edge lengths positive, resulting in an identical added value to
+  // the total length of any path from source to a certain node (in
+  // particular the sink)
   void update_positivized_lengths();
+
   // It may happen that numerical errors in update_positivized_lengths
   // make the resulting lengths negative, albeit very small. The
-  // following method force such length to zero, and print the
-  // correction when compiled in VERBOSE mode.
+  // following method forces all negative lengths to zero, and prints
+  // the total correction when compiled in VERBOSE mode.
   void force_positivized_lengths();
+
   // Set the edge pred_edge_toward_source correspondingly to the path
   // of shortest length. The current implementation is not Dijkstra's!
   void find_shortest_path();
+
   // Follows the path starting on edge e and returns its length. If
   // nodes is non-null, stores in it the nodes met along the path.
   int retrieve_one_path(Edge *e, Path *path);
+
   // Returns if the graph is a DAG
   int is_dag();