diff -r 48f9299b390d -r 96b74270c3a1 src/lemon/lp_skeleton.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/lemon/lp_skeleton.h	Thu Apr 07 06:38:56 2005 +0000
@@ -0,0 +1,115 @@
+/* -*- C++ -*-
+ * src/lemon/lp_skeleton.h
+ * - Part of LEMON, a generic C++ optimization library
+ *
+ * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
+ * (Egervary Combinatorial Optimization Research Group, EGRES).
+ *
+ * Permission to use, modify and distribute this software is granted
+ * provided that this copyright notice appears in all copies. For
+ * precise terms see the accompanying LICENSE file.
+ *
+ * This software is provided "AS IS" with no warranty of any kind,
+ * express or implied, and with no claim as to its suitability for any
+ * purpose.
+ *
+ */
+
+#ifndef LEMON_LP_SKELETON
+#define LEMON_LP_SKELETON
+
+#include"lp_base.h"
+
+///\file
+///\brief A skeleton file to implement LP solver interfaces
+namespace lemon {
+  
+  ///A skeleton class to implement LP solver interfaces
+  class LpSkeleton :public LpSolverBase {
+    int col_num,row_num;
+    
+  protected:
+    /// \e
+    virtual int _addCol();
+    /// \e
+    virtual int _addRow();
+    /// \e
+
+    /// \warning Arrays are indexed from 1 (datum at index 0 is ignored)
+    ///
+    virtual void _setRowCoeffs(int i, 
+			       int length,
+                               int  const * indices, 
+                               Value  const * values );
+    /// \e
+
+    /// \warning Arrays are indexed from 1 (datum at index 0 is ignored)
+    ///
+    virtual void _setColCoeffs(int i, 
+			       int length,
+                               int  const * indices, 
+                               Value  const * values );
+    
+    /// \e
+
+    /// The lower bound of a variable (column) have to be given by an 
+    /// extended number of type Value, i.e. a finite number of type 
+    /// Value or -\ref INF.
+    virtual void _setColLowerBound(int i, Value value);
+    /// \e
+
+    /// The upper bound of a variable (column) have to be given by an 
+    /// extended number of type Value, i.e. a finite number of type 
+    /// Value or \ref INF.
+    virtual void _setColUpperBound(int i, Value value);
+    /// \e
+
+    /// The lower bound of a linear expression (row) have to be given by an 
+    /// extended number of type Value, i.e. a finite number of type 
+    /// Value or -\ref INF.
+    virtual void _setRowLowerBound(int i, Value value);
+    /// \e
+
+    /// The upper bound of a linear expression (row) have to be given by an 
+    /// extended number of type Value, i.e. a finite number of type 
+    /// Value or \ref INF.
+    virtual void _setRowUpperBound(int i, Value value);
+
+    /// \e
+    virtual void _setObjCoeff(int i, Value obj_coef);
+
+    ///\e
+    
+    ///\bug Wrong interface
+    ///
+    virtual SolveExitStatus _solve();
+
+    ///\e
+
+    ///\bug Wrong interface
+    ///
+    virtual Value _getPrimal(int i);
+    ///\e
+
+    ///\bug Wrong interface
+    ///
+    virtual Value _getPrimalValue();
+    ///\e
+
+    ///\bug Wrong interface
+    ///
+    virtual SolutionStatus _getPrimalStatus();
+
+    ///\e
+    virtual void _setMax();
+    ///\e
+    virtual void _setMin();
+    
+
+  public:
+    LpSkeleton() : LpSolverBase(), col_num(0), row_num(0) {}
+  };  
+
+} //namespace lemon
+
+#endif // LEMON_LP_SKELETON