diff -r 61f989e3e525 -r a490938ad0aa src/work/athos/lp/lp_base.h
--- a/src/work/athos/lp/lp_base.h	Fri Mar 25 15:32:05 2005 +0000
+++ b/src/work/athos/lp/lp_base.h	Fri Mar 25 16:19:03 2005 +0000
@@ -100,6 +100,18 @@
     
   public:
 
+    ///\e
+    enum SolutionType {
+      ///\e
+      INFEASIBLE = 0,
+      ///\e
+      UNBOUNDED = 1,
+      ///\e
+      OPTIMAL = 2,
+      ///\e
+      FEASIBLE = 3,
+    };
+      
     ///The floating point type used by the solver
     typedef double Value;
     ///The infinity constant
@@ -160,8 +172,6 @@
     _FixId rows;
     _FixId cols;
 
-    //MATRIX MANIPULATING FUNCTIONS
-
     /// \e
     virtual int _addCol() = 0;
     /// \e
@@ -212,6 +222,17 @@
     virtual void _setObjCoeff(int i, Value obj_coef) = 0;
 
     ///\e
+    
+    ///\bug Wrong interface
+    ///
+    virtual SolutionType _solve() = 0;
+
+    ///\e
+
+    ///\bug Wrong interface
+    ///
+    virtual Value _getSolution(int i) = 0;
+    ///\e
 
     ///\bug unimplemented!!!!
     void clearObj() {}
@@ -221,8 +242,13 @@
     ///\e
     virtual ~LpSolverBase() {}
 
+    ///\name Building up and modification of the LP
+
+    ///@{
+
     ///Add a new empty column (i.e a new variable) to the LP
     Col addCol() { Col c; c.id=cols.insert(_addCol()); return c;}
+
     ///\brief Fill the elements of a container with newly created columns
     ///(i.e a new variables)
     ///
@@ -261,6 +287,7 @@
       return s;
     }
 #endif
+
     ///Add a new empty row (i.e a new constaint) to the LP
 
     ///This function adds a new empty row (i.e a new constaint) to the LP.
@@ -348,6 +375,27 @@
       for (Expr::iterator i=e.begin(); i!=e.end(); ++i)
 	setObjCoeff((*i).first,(*i).second);
     }
+
+    ///@}
+
+
+    ///\name Solving the LP
+
+    ///@{
+
+    ///\e
+    SolutionType solve() { return _solve(); }
+    
+    ///@}
+    
+    ///\name Obtaining the solution LP
+
+    ///@{
+
+    ///\e
+    Value solution(Col c) { return _getSolution(cols.floatingId(c.id)); }
+
+    ///@}
     
   };