This class does nothing, but it can serve as a skeleton when implementing an interface to new solvers. 
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| virtual int | _addCol () | 
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| virtual int | _addRow () | 
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| virtual int | _addRow (Value l, ExprIterator b, ExprIterator e, Value u) | 
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| virtual void | _eraseCol (int i) | 
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| virtual void | _eraseRow (int i) | 
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| virtual void | _getColName (int col, std::string &name) const | 
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| virtual void | _setColName (int col, const std::string &name) | 
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| virtual int | _colByName (const std::string &name) const | 
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| virtual void | _getRowName (int row, std::string &name) const | 
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| virtual void | _setRowName (int row, const std::string &name) | 
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| virtual int | _rowByName (const std::string &name) const | 
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| virtual void | _setRowCoeffs (int i, ExprIterator b, ExprIterator e) | 
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| virtual void | _getRowCoeffs (int i, InsertIterator b) const | 
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| virtual void | _setColCoeffs (int i, ExprIterator b, ExprIterator e) | 
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| virtual void | _getColCoeffs (int i, InsertIterator b) const | 
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| virtual void | _setCoeff (int row, int col, Value value) | 
|  | Set one element of the coefficient matrix. 
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| virtual Value | _getCoeff (int row, int col) const | 
|  | Get one element of the coefficient matrix. 
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| virtual void | _setColLowerBound (int i, Value value) | 
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| virtual Value | _getColLowerBound (int i) const | 
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| virtual void | _setColUpperBound (int i, Value value) | 
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| virtual Value | _getColUpperBound (int i) const | 
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| virtual void | _setRowLowerBound (int i, Value value) | 
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| virtual Value | _getRowLowerBound (int i) const | 
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| virtual void | _setRowUpperBound (int i, Value value) | 
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| virtual Value | _getRowUpperBound (int i) const | 
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| virtual void | _setObjCoeffs (ExprIterator b, ExprIterator e) | 
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| virtual void | _getObjCoeffs (InsertIterator b) const | 
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| virtual void | _setObjCoeff (int i, Value obj_coef) | 
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| virtual Value | _getObjCoeff (int i) const | 
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| virtual void | _setSense (Sense) | 
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| virtual Sense | _getSense () const | 
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| virtual void | _clear () | 
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| virtual void | _messageLevel (MessageLevel) | 
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| virtual void | _write (std::string file, std::string format) const | 
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| enum | SolveExitStatus { SOLVED = 0, 
UNSOLVED = 1
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|  | Possible outcomes of an LP solving procedure.  More... 
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| enum | Sense { MIN, 
MAX
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|  | Direction of the optimization.  More... 
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| enum | MessageLevel { MESSAGE_NOTHING, 
MESSAGE_ERROR, 
MESSAGE_WARNING, 
MESSAGE_NORMAL,
 MESSAGE_VERBOSE
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|  | Enum for messageLevel()parameter.  More...
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| typedef double | Value | 
|  | The floating point type used by the solver. 
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| virtual | ~LpBase () | 
|  | Virtual destructor. 
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| const char * | solverName () const | 
|  | Gives back the name of the solver. 
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| Col | addCol () | 
|  | Add a new empty column (i.e a new variable) to the LP. 
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| template<class T > | 
| int | addColSet (T &t) | 
|  | Adds several new columns (i.e variables) at once.  More... 
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| void | col (Col c, const DualExpr &e) | 
|  | Set a column (i.e a dual constraint) of the LP.  More... 
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| DualExpr | col (Col c) const | 
|  | Get a column (i.e a dual constraint) of the LP.  More... 
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| Col | addCol (const DualExpr &e, Value o=0) | 
|  | Add a new column to the LP.  More... 
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| Row | addRow () | 
|  | Add a new empty row (i.e a new constraint) to the LP.  More... 
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| template<class T > | 
| int | addRowSet (T &t) | 
|  | Add several new rows (i.e constraints) at once.  More... 
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| void | row (Row r, Value l, const Expr &e, Value u) | 
|  | Set a row (i.e a constraint) of the LP.  More... 
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| void | row (Row r, const Constr &c) | 
|  | Set a row (i.e a constraint) of the LP.  More... 
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| Expr | row (Row r) const | 
|  | Get a row (i.e a constraint) of the LP.  More... 
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| Row | addRow (Value l, const Expr &e, Value u) | 
|  | Add a new row (i.e a new constraint) to the LP.  More... 
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| Row | addRow (const Constr &c) | 
|  | Add a new row (i.e a new constraint) to the LP.  More... 
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| void | erase (Col c) | 
|  | Erase a column (i.e a variable) from the LP.  More... 
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| void | erase (Row r) | 
|  | Erase a row (i.e a constraint) from the LP.  More... 
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| std::string | colName (Col c) const | 
|  | Get the name of a column.  More... 
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| void | colName (Col c, const std::string &name) | 
|  | Set the name of a column.  More... 
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| Col | colByName (const std::string &name) const | 
|  | Get the column by its name.  More... 
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| std::string | rowName (Row r) const | 
|  | Get the name of a row.  More... 
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| void | rowName (Row r, const std::string &name) | 
|  | Set the name of a row.  More... 
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| Row | rowByName (const std::string &name) const | 
|  | Get the row by its name.  More... 
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| void | coeff (Row r, Col c, Value val) | 
|  | Set an element of the coefficient matrix of the LP.  More... 
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| Value | coeff (Row r, Col c) const | 
|  | Get an element of the coefficient matrix of the LP.  More... 
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| void | colLowerBound (Col c, Value value) | 
|  | Set the lower bound of a column (i.e a variable)  More... 
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| Value | colLowerBound (Col c) const | 
|  | Get the lower bound of a column (i.e a variable)  More... 
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| template<class T > | 
| void | colLowerBound (T &t, Value value) | 
|  | Set the lower bound of several columns (i.e variables) at once.  More... 
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| void | colUpperBound (Col c, Value value) | 
|  | Set the upper bound of a column (i.e a variable)  More... 
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| Value | colUpperBound (Col c) const | 
|  | Get the upper bound of a column (i.e a variable)  More... 
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| template<class T > | 
| void | colUpperBound (T &t, Value value) | 
|  | Set the upper bound of several columns (i.e variables) at once.  More... 
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| void | colBounds (Col c, Value lower, Value upper) | 
|  | Set the lower and the upper bounds of a column (i.e a variable)  More... 
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| template<class T > | 
| void | colBounds (T &t, Value lower, Value upper) | 
|  | Set the lower and the upper bound of several columns (i.e variables) at once.  More... 
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| void | rowLowerBound (Row r, Value value) | 
|  | Set the lower bound of a row (i.e a constraint)  More... 
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| Value | rowLowerBound (Row r) const | 
|  | Get the lower bound of a row (i.e a constraint)  More... 
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| void | rowUpperBound (Row r, Value value) | 
|  | Set the upper bound of a row (i.e a constraint)  More... 
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| Value | rowUpperBound (Row r) const | 
|  | Get the upper bound of a row (i.e a constraint)  More... 
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| void | objCoeff (Col c, Value v) | 
|  | Set an element of the objective function. 
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| Value | objCoeff (Col c) const | 
|  | Get an element of the objective function. 
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| void | obj (const Expr &e) | 
|  | Set the objective function.  More... 
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| Expr | obj () const | 
|  | Get the objective function.  More... 
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| void | sense (Sense sense) | 
|  | Set the direction of optimization. 
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| Sense | sense () const | 
|  | Query the direction of the optimization. 
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| void | max () | 
|  | Set the sense to maximization. 
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| void | min () | 
|  | Set the sense to maximization. 
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| void | clear () | 
|  | Clear the problem. 
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| void | messageLevel (MessageLevel level) | 
|  | Set the message level of the solver. 
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| void | write (std::string file, std::string format="MPS") const | 
|  | Write the problem to a file in the given format.  More... 
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| static int | id (const Col &col) | 
|  | Returns the ID of the column. 
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| static Col | colFromId (int id) | 
|  | Returns the column with the given ID.  More... 
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| static int | id (const Row &row) | 
|  | Returns the ID of the row. 
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| static Row | rowFromId (int id) | 
|  | Returns the row with the given ID.  More... 
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| static const Value | INF | 
|  | The infinity constant. 
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| static const Value | NaN | 
|  | The not a number constant. 
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