1.1 --- a/lemon/lp_base.h	Mon May 23 04:48:14 2005 +0000
     1.2 +++ b/lemon/lp_base.h	Thu May 26 12:16:16 2005 +0000
     1.3 @@ -417,7 +417,14 @@
     1.4  
     1.5      //Abstract virtual functions
     1.6      virtual LpSolverBase &_newLp() = 0;
     1.7 -    virtual LpSolverBase &_copyLp() = 0;
     1.8 +    virtual LpSolverBase &_copyLp(){
     1.9 +      ///\todo This should be implemented here, too,  when we have problem retrieving routines. It can be overriden.
    1.10 +
    1.11 +      //Starting:
    1.12 +      LpSolverBase & newlp(_newLp());
    1.13 +      return newlp;
    1.14 +      //return *(LpSolverBase*)0;
    1.15 +    };
    1.16  
    1.17      virtual int _addCol() = 0;
    1.18      virtual int _addRow() = 0;
    1.19 @@ -608,6 +615,15 @@
    1.20        return r;
    1.21      }
    1.22  
    1.23 +    ///Set an element of the coefficient matrix of the LP
    1.24 +
    1.25 +    ///\param r is the row of the element to be modified
    1.26 +    ///\param c is the coloumn of the element to be modified
    1.27 +    ///\param val is the new value of the coefficient
    1.28 +    void setCoeff(Row r, Col c, Value val){
    1.29 +      _setCoeff(rows.floatingId(r.id),cols.floatingId(c.id), val);
    1.30 +    }
    1.31 +
    1.32      /// Set the lower bound of a column (i.e a variable)
    1.33  
    1.34      /// The upper bound of a variable (column) has to be given by an