Index: benchmark/edge_lookup_test.h
===================================================================
--- benchmark/edge_lookup_test.h	(revision 2239)
+++ benchmark/edge_lookup_test.h	(revision 2252)
@@ -190,90 +190,96 @@
   };
 
-//   template<class G>
-//   class EdgeLookUp4
-//   {
-//   public:
-//     GRAPH_TYPEDEFS(typename G)
-//     typedef G Graph;
-
-//   private:
-//     const Graph &_g;
-//     typename Graph::template NodeMap<Edge*> _start;
-//     typename Graph::template NodeMap<Edge*> _end;
-//     std::vector<Edge> _edges;
-    
-//     class EdgeLess {
-//       const Graph &g;
-//     public:
-//       EdgeLess(const Graph &_g) : g(_g) {}
-//       bool operator()(Edge a,Edge b) const 
-//       {
-// 	return g.target(a)<g.target(b);
-//       }
-//     };
-    
-//   public:
-    
-//     ///Constructor
-//     EdgeLookUp4(const Graph &g) :_g(g),_start(g),_end(g) {refresh();}
-    
-//   public:
-//     ///Refresh the data structure at a node.
-//     void refresh(Node n) 
-//     {
-//       const int bi = _start[n] = _edges.size();
-//       for(OutEdgeIt e(_g,n);e!=INVALID;++e) _edges.push_back(e);
-//       const typename std::vector<Edge>::iterator ei=_edges.end();
-//       _end[n]=_edges.size();
-//       std::sort(_edges.begin()+bi,ei,EdgeLess(_g));
-//     }
-//     ///Refresh the full data structure.
-//     void refresh() 
-//     {
-//       _edges.resize(countEdges(_g));
-//       int l=0;
-//       for(NodeIt n(_g);n!=INVALID;++n)
-// 	{
-// 	  int ls = l;
-// 	  _start[n]=&(_edges[l]);	
-// 	  for(OutEdgeIt e(_g,n);e!=INVALID;++e) _edges[l++]=e;
-// 	  _end[n]=&(_edges[l]);
-// 	  std::sort(_edges.begin()+ls,_edges.begin()+l,EdgeLess(_g));
-// 	}
-      
-//     }
-    
-//     ///Find an edge between two nodes.
-    
-//     ///Find an edge between two nodes.
-//     ///\param s The source node
-//     ///\param t The target node
-//     ///\return An edge from \c s to \c t if there exists,
-//     ///\ref INVALID otherwise.
-
-//     Edge operator()(Node s, Node t) 
-//     {
-//       Edge *a=_start[s];
-//       Edge *b=_end[s];
-//       while(a!=b) 
-// 	{
-// 	  Edge *m=(Edge*)(((unsigned int)a+(unsigned int)b)/2 & 0xfffffffc);
-// 	  Node tt = _g.target(*m);
-// 	  if(tt==t) return *m;
-// 	  else if(tt<t) a=m+1;
-// 	  else b=m;
-// 	}
-//       return INVALID;
-//     }
-
-//     ///Find the next edge
-      
-//       ///\warning This function is unimplemented.
-//     Edge operator()(Node s, Node t, Edge prev) 
-//     {
-//       return prev==INVALID?(*this)(s,t):INVALID;
-//     }
-      
-//   };
+  template<class G>
+  class EdgeLookUp4
+  {
+  public:
+    GRAPH_TYPEDEFS(typename G)
+    typedef G Graph;
+    
+  private:
+    const Graph &_g;
+    typename Graph::template NodeMap<Edge*> _start;
+    typename Graph::template NodeMap<Edge*> _end;
+    std::vector<Edge> _edges;
+    
+    class EdgeLess {
+      const Graph &g;
+    public:
+      EdgeLess(const Graph &_g) : g(_g) {}
+      bool operator()(Edge a,Edge b) const 
+      {
+	return g.target(a)<g.target(b);
+      }
+    };
+    
+  public:
+    
+    ///Constructor
+    EdgeLookUp4(const Graph &g) :_g(g),_start(g),_end(g) {refresh();}
+    
+  public:
+    ///Refresh the data structure at a node.
+    void refresh(Node n) 
+    {
+      const int bi = _start[n] = _edges.size();
+      for(OutEdgeIt e(_g,n);e!=INVALID;++e) _edges.push_back(e);
+      const typename std::vector<Edge>::iterator ei=_edges.end();
+      _end[n]=_edges.size();
+      std::sort(_edges.begin()+bi,ei,EdgeLess(_g));
+    }
+    ///Refresh the full data structure.
+    void refresh() 
+    {
+      _edges.resize(countEdges(_g));
+      int l=0;
+      for(NodeIt n(_g);n!=INVALID;++n)
+	{
+	  int ls = l;
+	  _start[n]=&(_edges[l]);	
+	  for(OutEdgeIt e(_g,n);e!=INVALID;++e) _edges[l++]=e;
+	  _end[n]=&(_edges[l]);
+	  std::sort(_edges.begin()+ls,_edges.begin()+l,EdgeLess(_g));
+	}
+      
+    }
+    
+    ///Find an edge between two nodes.
+    
+    ///Find an edge between two nodes.
+    ///\param s The source node
+    ///\param t The target node
+    ///\return An edge from \c s to \c t if there exists,
+    ///\ref INVALID otherwise.
+
+    Edge operator()(Node s, Node t) 
+    {
+      Edge *a=_start[s];
+      Edge *b=_end[s];
+      while(a!=b) 
+	{
+#ifdef X86
+ 	  Edge *m=(Edge*)(((unsigned int)a+(unsigned int)b)/2 & 0xfffffffc);
+#elif X86_64
+	  Edge *m=(Edge*)(((unsigned long)a+(undigned long)b)/2 & 0xfffffffc);
+#else
+ 	  Edge *m=a+((b-a)/2);
+#endif
+	  Node tt = _g.target(*m);
+	  if(tt==t) return *m;
+	  else if(tt<t) a=m+1;
+	  else b=m;
+	}
+      return INVALID;
+    }
+
+    ///Find the next edge
+      
+      ///\warning This function is unimplemented.
+    Edge operator()(Node s, Node t, Edge prev) 
+    {
+      return prev==INVALID?(*this)(s,t):INVALID;
+    }
+      
+  };
 
 }
