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diff --git a/src/intersim2/networks/tree4.hpp b/src/intersim2/networks/tree4.hpp
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+// $Id: tree4.hpp 5188 2012-08-30 00:31:31Z dub $
+
+/*
+ Copyright (c) 2007-2012, Trustees of The Leland Stanford Junior University
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+
+ Redistributions of source code must retain the above copyright notice, this 
+ list of conditions and the following disclaimer.
+ Redistributions in binary form must reproduce the above copyright notice, this
+ list of conditions and the following disclaimer in the documentation and/or
+ other materials provided with the distribution.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
+ DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+////////////////////////////////////////////////////////////////////////
+//
+// Tree4: Network with 64 Terminal Nodes arranged in a tree topology
+//        with 4 routers at the root of the tree
+//
+////////////////////////////////////////////////////////////////////////
+//
+// RCS Information:
+//  $Author: jbalfour $
+//  $Date: 2007/06/26 22:49:23 $
+//  $Id: tree4.hpp 5188 2012-08-30 00:31:31Z dub $
+// 
+////////////////////////////////////////////////////////////////////////
+
+#ifndef _TREE4_HPP_
+#define _TREE4_HPP_
+#include <cassert>
+#include "network.hpp"
+
+class Tree4 : public Network {
+
+  int _k;
+  int _n;
+
+  int _channelWidth;
+
+  void _ComputeSize( const Configuration& config );
+  void _BuildNet( const Configuration& config );
+
+
+  Router*& _Router( int height, int pos );
+
+  int _WireLatency( int height1, int pos1, int height2, int pos2 );
+
+public:
+
+  Tree4( const Configuration& config, const string & name );
+  static void RegisterRoutingFunctions() ;
+  
+  static int HeightFromID( int id );
+  static int PosFromID( int id );
+  static int SpeedUp( int height );
+};
+
+#endif