X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?p=mtp.git;a=blobdiff_plain;f=mtp_graph.cc;h=e69d4d675a6bdd170e81d5819c9035ddbd0c4710;hp=6fb38779089287fd0f3fb312a50733e14e9283ff;hb=cbe26b67e99f4151dec8cb088e6bfd5561dad7eb;hpb=d61402c073c55b30b1e06f091ffd9c884acc01a0

diff --git a/mtp_graph.cc b/mtp_graph.cc
index 6fb3877..e69d4d6 100644
--- a/mtp_graph.cc
+++ b/mtp_graph.cc
@@ -457,6 +457,11 @@ void MTPGraph::compute_dp_ordering() {
   }
 
   while(already_processed < front) {
+    // Here, nodes before already_processed can be ignored, nodes
+    // before front were set to 0 predecessors during the previous
+    // iteration. During this new iteration, we have to visit the
+    // successors of these ones only, since they are the only ones
+    // which may end up with no predecessors.
     new_front = front;
     while(already_processed < front) {
       v = *(already_processed++);