benchmark/edge_lookup.cc
author alpar
Mon, 30 Oct 2006 16:19:18 +0000
changeset 2274 432d0469a87e
parent 2272 f6b352fdc6b1
child 2391 14a343be7a5a
permissions -rw-r--r--
Turn off 32 bit only tests, cont'd.
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#include<lemon/smart_graph.h>
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#include<vector>
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#include<lemon/time_measure.h>
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#include<lemon/random.h>
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#include<lemon/graph_utils.h>
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#include<algorithm>
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using namespace lemon;
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  template<class G>
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  class EdgeLookUp2
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  {
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  public:
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    GRAPH_TYPEDEFS(typename G)
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    typedef G Graph;
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  private:
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    const Graph &_g;
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    typename Graph::template NodeMap<int> _start;
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    typename Graph::template NodeMap<int> _end;
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    std::vector<Edge> _edges;
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    class EdgeLess {
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      const Graph &g;
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    public:
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      EdgeLess(const Graph &_g) : g(_g) {}
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      bool operator()(Edge a,Edge b) const 
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      {
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	return g.target(a)<g.target(b);
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      }
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    };
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  public:
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    ///Constructor
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    EdgeLookUp2(const Graph &g) :_g(g),_start(g),_end(g) {refresh();}
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  public:
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    ///Refresh the data structure at a node.
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    void refresh(Node n) 
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    {
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      const int bi = _start[n] = _edges.size();
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      for(OutEdgeIt e(_g,n);e!=INVALID;++e) _edges.push_back(e);
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      const typename std::vector<Edge>::iterator ei=_edges.end();
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      _end[n]=_edges.size();
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      std::sort(_edges.begin()+bi,ei,EdgeLess(_g));
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    }
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    ///Refresh the full data structure.
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    void refresh() 
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    {
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      _edges.clear();
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      for(NodeIt n(_g);n!=INVALID;++n) refresh(n);
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    }
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    ///Find an edge between two nodes.
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    ///Find an edge between two nodes.
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    ///\param s The source node
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    ///\param t The target node
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    ///\return An edge from \c s to \c t if there exists,
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    ///\ref INVALID otherwise.
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    Edge operator()(Node s, Node t) 
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    {
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      int a=_start[s];
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      int b=_end[s];
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      while(a<b) 
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	{
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	  int n=(a+b)/2;
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	  Node tt = _g.target(_edges[n]);
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	  if(tt==t) return _edges[n];
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	  else if(tt<t) a=n+1;
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	  else b=n;
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	}
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      return INVALID;
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    }
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    ///Find the next edge
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      ///\warning This function is unimplemented.
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    Edge operator()(Node s, Node t, Edge prev) 
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    {
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      return prev==INVALID?(*this)(s,t):INVALID;
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    }
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  };
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  template<class G>
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  class EdgeLookUp3
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  {
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  public:
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    GRAPH_TYPEDEFS(typename G)
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    typedef G Graph;
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  private:
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    const Graph &_g;
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    typename Graph::template NodeMap<Edge*> _start;
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    typename Graph::template NodeMap<Edge*> _end;
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    std::vector<Edge> _edges;
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    class EdgeLess {
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      const Graph &g;
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    public:
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      EdgeLess(const Graph &_g) : g(_g) {}
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      bool operator()(Edge a,Edge b) const 
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      {
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	return g.target(a)<g.target(b);
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      }
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    };
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  public:
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    ///Constructor
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    EdgeLookUp3(const Graph &g) :_g(g),_start(g),_end(g) {refresh();}
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  public:
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    ///Refresh the data structure at a node.
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    void refresh(Node n) 
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    {
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      const int bi = _start[n] = _edges.size();
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      for(OutEdgeIt e(_g,n);e!=INVALID;++e) _edges.push_back(e);
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      const typename std::vector<Edge>::iterator ei=_edges.end();
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      _end[n]=_edges.size();
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      std::sort(_edges.begin()+bi,ei,EdgeLess(_g));
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    }
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    ///Refresh the full data structure.
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    void refresh() 
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    {
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      _edges.resize(countEdges(_g));
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      int l=0;
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      for(NodeIt n(_g);n!=INVALID;++n)
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	{
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	  int ls = l;
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	  _start[n]=&(_edges[l]);	
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	  for(OutEdgeIt e(_g,n);e!=INVALID;++e) _edges[l++]=e;
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	  _end[n]=&(_edges[l]);
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	  std::sort(_edges.begin()+ls,_edges.begin()+l,EdgeLess(_g));
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	}
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    }
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    ///Find an edge between two nodes.
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    ///Find an edge between two nodes.
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    ///\param s The source node
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    ///\param t The target node
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    ///\return An edge from \c s to \c t if there exists,
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    ///\ref INVALID otherwise.
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    Edge operator()(Node s, Node t) 
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    {
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      Edge *a=_start[s];
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      Edge *b=_end[s];
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      while(a!=b) 
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	{
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 	  Edge *m=a+((b-a)/2);
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	  Node tt = _g.target(*m);
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	  if(tt==t) return *m;
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	  else if(tt<t) a=m+1;
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	  else b=m;
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	}
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      return INVALID;
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    }
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    ///Find the next edge
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      ///\warning This function is unimplemented.
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    Edge operator()(Node s, Node t, Edge prev) 
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    {
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      return prev==INVALID?(*this)(s,t):INVALID;
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    }
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  };
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//   template<class G>
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//   class EdgeLookUp4
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//   {
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//   public:
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//     GRAPH_TYPEDEFS(typename G)
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//     typedef G Graph;
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//   private:
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//     const Graph &_g;
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//     typename Graph::template NodeMap<Edge*> _start;
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//     typename Graph::template NodeMap<Edge*> _end;
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//     std::vector<Edge> _edges;
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//     class EdgeLess {
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//       const Graph &g;
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//     public:
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//       EdgeLess(const Graph &_g) : g(_g) {}
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//       bool operator()(Edge a,Edge b) const 
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//       {
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// 	return g.target(a)<g.target(b);
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//       }
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//     };
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//   public:
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//     ///Constructor
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//     EdgeLookUp4(const Graph &g) :_g(g),_start(g),_end(g) {refresh();}
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//   public:
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//     ///Refresh the data structure at a node.
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//     void refresh(Node n) 
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//     {
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//       const int bi = _start[n] = _edges.size();
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//       for(OutEdgeIt e(_g,n);e!=INVALID;++e) _edges.push_back(e);
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//       const typename std::vector<Edge>::iterator ei=_edges.end();
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//       _end[n]=_edges.size();
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//       std::sort(_edges.begin()+bi,ei,EdgeLess(_g));
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//     }
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//     ///Refresh the full data structure.
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//     void refresh() 
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//     {
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//       _edges.resize(countEdges(_g));
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//       int l=0;
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//       for(NodeIt n(_g);n!=INVALID;++n)
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// 	{
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// 	  int ls = l;
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// 	  _start[n]=&(_edges[l]);	
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// 	  for(OutEdgeIt e(_g,n);e!=INVALID;++e) _edges[l++]=e;
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// 	  _end[n]=&(_edges[l]);
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// 	  std::sort(_edges.begin()+ls,_edges.begin()+l,EdgeLess(_g));
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// 	}
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//     }
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//     ///Find an edge between two nodes.
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//     ///Find an edge between two nodes.
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//     ///\param s The source node
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//     ///\param t The target node
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//     ///\return An edge from \c s to \c t if there exists,
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//     ///\ref INVALID otherwise.
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//     Edge operator()(Node s, Node t) 
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//     {
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//       Edge *a=_start[s];
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//       Edge *b=_end[s];
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//       while(a!=b) 
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// 	{
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// // #ifdef X86
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//  	  Edge *m=(Edge*)(((unsigned int)a+(unsigned int)b)/2 & 0xfffffffc);
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// // #elif X86_64
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// // 	  Edge *m=(Edge*)(((unsigned long)a+(undigned long)b)/2 & 0xfffffffc);
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// // #else
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// //  	  Edge *m=a+((b-a)/2);
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// // #endif
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// 	  Node tt = _g.target(*m);
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// 	  if(tt==t) return *m;
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// 	  else if(tt<t) a=m+1;
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// 	  else b=m;
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// 	}
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//       return INVALID;
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//     }
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//     ///Find the next edge
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//       ///\warning This function is unimplemented.
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//     Edge operator()(Node s, Node t, Edge prev) 
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//     {
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//       return prev==INVALID?(*this)(s,t):INVALID;
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//     }
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//   };
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//   template<class G>
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//   class EdgeLookUp5
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//   {
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//   public:
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//     GRAPH_TYPEDEFS(typename G)
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//     typedef G Graph;
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//   private:
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//     const Graph &_g;
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//     typename Graph::template NodeMap<Edge*> _start;
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//     typename Graph::template NodeMap<Edge*> _end;
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//     std::vector<Edge> _edges;
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//     class EdgeLess {
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//       const Graph &g;
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//     public:
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//       EdgeLess(const Graph &_g) : g(_g) {}
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//       bool operator()(Edge a,Edge b) const 
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//       {
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// 	return g.target(a)<g.target(b);
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//       }
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//     };
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//   public:
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//     ///Constructor
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//     EdgeLookUp5(const Graph &g) :_g(g),_start(g),_end(g) {refresh();}
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//   public:
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//     ///Refresh the data structure at a node.
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//     void refresh(Node n) 
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//     {
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//       const int bi = _start[n] = _edges.size();
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//       for(OutEdgeIt e(_g,n);e!=INVALID;++e) _edges.push_back(e);
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//       const typename std::vector<Edge>::iterator ei=_edges.end();
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//       _end[n]=_edges.size();
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//       std::sort(_edges.begin()+bi,ei,EdgeLess(_g));
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//     }
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//     ///Refresh the full data structure.
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//     void refresh() 
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//     {
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//       _edges.resize(countEdges(_g));
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//       int l=0;
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//       for(NodeIt n(_g);n!=INVALID;++n)
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// 	{
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// 	  int ls = l;
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// 	  _start[n]=&(_edges[l]);	
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// 	  for(OutEdgeIt e(_g,n);e!=INVALID;++e) _edges[l++]=e;
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// 	  _end[n]=&(_edges[l]);
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// 	  std::sort(_edges.begin()+ls,_edges.begin()+l,EdgeLess(_g));
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// 	}
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//     }
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//     ///Find an edge between two nodes.
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//     ///Find an edge between two nodes.
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//     ///\param s The source node
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//     ///\param t The target node
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//     ///\return An edge from \c s to \c t if there exists,
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//     ///\ref INVALID otherwise.
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//     Edge operator()(Node s, Node t) 
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//     {
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//       Edge *a=_start[s];
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//       Edge *b=_end[s];
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//       while(a!=b) 
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// 	{
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// // #ifdef X86
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//  	  Edge *m=(Edge*)((((unsigned int)a>>1)+((unsigned int)b)>>1)
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// 			  & 0xfffffffc);
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// // #elif X86_64
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// // 	  Edge *m=(Edge*)(((unsigned long)a>>1+(undigned long)b)>>1)&0xfffffffc);
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// // #else
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// //  	  Edge *m=a+((b-a)/2);
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// // #endif
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// 	  Node tt = _g.target(*m);
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// 	  if(tt==t) return *m;
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// 	  else if(tt<t) a=m+1;
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// 	  else b=m;
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// 	}
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//       return INVALID;
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//     }
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//     ///Find the next edge
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//       ///\warning This function is unimplemented.
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//     Edge operator()(Node s, Node t, Edge prev) 
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//     {
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//       return prev==INVALID?(*this)(s,t):INVALID;
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//     }
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//   };
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GRAPH_TYPEDEFS(SmartGraph)
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typedef SmartGraph Graph;
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class FE 
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{
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public:
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  Graph &_g;
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  FE(Graph &g) :_g(g) {}
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  void operator()() 
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  {
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    Edge e;
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    for(NodeIt v(_g);v!=INVALID;++v)
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      for(NodeIt u(_g);u!=INVALID;++u)
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	e=findEdge(_g,u,v);
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  }
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};
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class EL 
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{
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public:
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  Graph &_g;
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  EdgeLookUp<Graph> _el;
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  EL(Graph &g) :_g(g), _el(g) {}
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  void operator()() 
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  {
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    Edge e;
alpar@2235
   390
    
alpar@2235
   391
    for(NodeIt v(_g);v!=INVALID;++v)
alpar@2235
   392
      for(NodeIt u(_g);u!=INVALID;++u)
alpar@2235
   393
	e=_el(u,v);
alpar@2235
   394
  }
alpar@2235
   395
  
alpar@2235
   396
};
alpar@2235
   397
class EL2
alpar@2235
   398
{
alpar@2235
   399
public:
alpar@2235
   400
  Graph &_g;
alpar@2235
   401
  EdgeLookUp2<Graph> _el;
alpar@2235
   402
  EL2(Graph &g) :_g(g), _el(g) {}
alpar@2235
   403
  void operator()() 
alpar@2235
   404
  {
alpar@2235
   405
    Edge e;
alpar@2235
   406
    
alpar@2235
   407
    for(NodeIt v(_g);v!=INVALID;++v)
alpar@2235
   408
      for(NodeIt u(_g);u!=INVALID;++u)
alpar@2235
   409
	e=_el(u,v);
alpar@2235
   410
  }
alpar@2235
   411
  
alpar@2235
   412
};
alpar@2235
   413
alpar@2235
   414
class EL3
alpar@2235
   415
{
alpar@2235
   416
public:
alpar@2235
   417
  Graph &_g;
alpar@2235
   418
  EdgeLookUp3<Graph> _el;
alpar@2235
   419
  EL3(Graph &g) :_g(g), _el(g) {}
alpar@2235
   420
  void operator()() 
alpar@2235
   421
  {
alpar@2235
   422
    Edge e;
alpar@2235
   423
    
alpar@2235
   424
    for(NodeIt v(_g);v!=INVALID;++v)
alpar@2235
   425
      for(NodeIt u(_g);u!=INVALID;++u)
alpar@2235
   426
	e=_el(u,v);
alpar@2235
   427
  }
alpar@2235
   428
  
alpar@2235
   429
};
alpar@2235
   430
alpar@2274
   431
// class EL4
alpar@2274
   432
// {
alpar@2274
   433
// public:
alpar@2274
   434
//   Graph &_g;
alpar@2274
   435
//   EdgeLookUp4<Graph> _el;
alpar@2274
   436
//   EL4(Graph &g) :_g(g), _el(g) {}
alpar@2274
   437
//   void operator()() 
alpar@2274
   438
//   {
alpar@2274
   439
//     Edge e;
alpar@2235
   440
    
alpar@2274
   441
//     for(NodeIt v(_g);v!=INVALID;++v)
alpar@2274
   442
//       for(NodeIt u(_g);u!=INVALID;++u)
alpar@2274
   443
// 	e=_el(u,v);
alpar@2274
   444
//   }
alpar@2235
   445
  
alpar@2274
   446
// };
alpar@2235
   447
alpar@2274
   448
// class EL5
alpar@2274
   449
// {
alpar@2274
   450
// public:
alpar@2274
   451
//   Graph &_g;
alpar@2274
   452
//   EdgeLookUp5<Graph> _el;
alpar@2274
   453
//   EL5(Graph &g) :_g(g), _el(g) {}
alpar@2274
   454
//   void operator()() 
alpar@2274
   455
//   {
alpar@2274
   456
//     Edge e;
alpar@2271
   457
    
alpar@2274
   458
//     for(NodeIt v(_g);v!=INVALID;++v)
alpar@2274
   459
//       for(NodeIt u(_g);u!=INVALID;++u)
alpar@2274
   460
// 	e=_el(u,v);
alpar@2274
   461
//   }
alpar@2271
   462
  
alpar@2274
   463
// };
alpar@2271
   464
alpar@2238
   465
int main(int, char**argv)
alpar@2235
   466
{
alpar@2235
   467
  int N=atoi(argv[1]);
alpar@2235
   468
  int M=int(N*atof(argv[2]));
alpar@2235
   469
  
alpar@2235
   470
  Graph g;
alpar@2235
   471
  
alpar@2235
   472
  std::vector<Node> v;
alpar@2235
   473
  for(int i=0;i<N;i++) v.push_back(g.addNode());
deba@2242
   474
  for(int i=0;i<M;i++) g.addEdge(v[rnd[N]],v[rnd[N]]);
alpar@2235
   475
alpar@2235
   476
//   {
alpar@2235
   477
//     Edge e;
alpar@2235
   478
    
alpar@2235
   479
//     TimeReport t("findEdge: ");
alpar@2235
   480
//     for(NodeIt u(g);u!=INVALID;++u)
alpar@2235
   481
//       for(NodeIt v(g);v!=INVALID;++v)
alpar@2235
   482
// 	e=findEdge(g,u,v);
alpar@2235
   483
//   }
alpar@2235
   484
//   {
alpar@2235
   485
//     Edge e;
alpar@2235
   486
//     EdgeLookUp<Graph> el(g);
alpar@2235
   487
    
alpar@2235
   488
//     TimeReport t("EdgeLookUp: ");
alpar@2235
   489
//     for(NodeIt u(g);u!=INVALID;++u)
alpar@2235
   490
//       for(NodeIt v(g);v!=INVALID;++v)
alpar@2235
   491
// 	e=el(u,v);
alpar@2235
   492
//   }
alpar@2235
   493
alpar@2235
   494
alpar@2235
   495
  TimeStamp t1 = runningTimeTest(FE(g),1);
alpar@2235
   496
  TimeStamp t2 = runningTimeTest(EL(g),1);
alpar@2235
   497
  TimeStamp t3 = runningTimeTest(EL2(g),1);
alpar@2235
   498
  TimeStamp t4 = runningTimeTest(EL3(g),1);
alpar@2272
   499
//   TimeStamp t5 = runningTimeTest(EL4(g),1);
alpar@2272
   500
//   TimeStamp t6 = runningTimeTest(EL5(g),1);
alpar@2235
   501
alpar@2235
   502
  std::cout << t1.userTime()/N/N << ' ' 
alpar@2235
   503
	    << t2.userTime()/N/N << ' '
alpar@2235
   504
	    << t3.userTime()/N/N << ' '
alpar@2235
   505
	    << t4.userTime()/N/N << ' '
alpar@2272
   506
// 	    << t5.userTime()/N/N << ' '
alpar@2272
   507
//  	    << t6.userTime()/N/N
alpar@2240
   508
	    << std::endl;
alpar@2235
   509
}
alpar@2235
   510