equal
  deleted
  inserted
  replaced
  
    
    
   107     if ( dfs_test.pred(v)!=INVALID ) { | 
   107     if ( dfs_test.pred(v)!=INVALID ) { | 
   108       Edge e=dfs_test.pred(v);  | 
   108       Edge e=dfs_test.pred(v);  | 
   109       Node u=G.source(e);  | 
   109       Node u=G.source(e);  | 
   110       check(u==dfs_test.predNode(v),"Wrong tree.");  | 
   110       check(u==dfs_test.predNode(v),"Wrong tree.");  | 
   111       check(dfs_test.dist(v) - dfs_test.dist(u) == 1,  | 
   111       check(dfs_test.dist(v) - dfs_test.dist(u) == 1,  | 
   112 	    "Wrong distance." << dfs_test.dist(v) << " " <<dfs_test.dist(u) );  | 
   112 	    "Wrong distance. (" << dfs_test.dist(u) << "->"  | 
         | 
   113 	    <<dfs_test.dist(v) << ')');  | 
   113     }  | 
   114     }  | 
   114   }  | 
   115   }  | 
   115 }  | 
   116 }  | 
   116   | 
   117   |