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Diffstat (limited to 'build/Bonmin/include/coin/ClpLinearObjective.hpp')
-rw-r--r-- | build/Bonmin/include/coin/ClpLinearObjective.hpp | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/build/Bonmin/include/coin/ClpLinearObjective.hpp b/build/Bonmin/include/coin/ClpLinearObjective.hpp new file mode 100644 index 0000000..ff035d4 --- /dev/null +++ b/build/Bonmin/include/coin/ClpLinearObjective.hpp @@ -0,0 +1,103 @@ +/* $Id: ClpLinearObjective.hpp 1665 2011-01-04 17:55:54Z lou $ */ +// Copyright (C) 2003, International Business Machines +// Corporation and others. All Rights Reserved. +// This code is licensed under the terms of the Eclipse Public License (EPL). + +#ifndef ClpLinearObjective_H +#define ClpLinearObjective_H + +#include "ClpObjective.hpp" + +//############################################################################# + +/** Linear Objective Class + +*/ + +class ClpLinearObjective : public ClpObjective { + +public: + + ///@name Stuff + //@{ + + /** Returns objective coefficients. + + Offset is always set to 0.0. All other parameters unused. + */ + virtual double * gradient(const ClpSimplex * model, + const double * solution, double & offset, bool refresh, + int includeLinear = 2); + /** Returns reduced gradient.Returns an offset (to be added to current one). + */ + virtual double reducedGradient(ClpSimplex * model, double * region, + bool useFeasibleCosts); + /** Returns step length which gives minimum of objective for + solution + theta * change vector up to maximum theta. + + arrays are numberColumns+numberRows + Also sets current objective, predicted and at maximumTheta + */ + virtual double stepLength(ClpSimplex * model, + const double * solution, + const double * change, + double maximumTheta, + double & currentObj, + double & predictedObj, + double & thetaObj); + /// Return objective value (without any ClpModel offset) (model may be NULL) + virtual double objectiveValue(const ClpSimplex * model, const double * solution) const ; + /// Resize objective + virtual void resize(int newNumberColumns) ; + /// Delete columns in objective + virtual void deleteSome(int numberToDelete, const int * which) ; + /// Scale objective + virtual void reallyScale(const double * columnScale) ; + + //@} + + + ///@name Constructors and destructors + //@{ + /// Default Constructor + ClpLinearObjective(); + + /// Constructor from objective + ClpLinearObjective(const double * objective, int numberColumns); + + /// Copy constructor + ClpLinearObjective(const ClpLinearObjective &); + /** Subset constructor. Duplicates are allowed + and order is as given. + */ + ClpLinearObjective (const ClpLinearObjective &rhs, int numberColumns, + const int * whichColumns) ; + + /// Assignment operator + ClpLinearObjective & operator=(const ClpLinearObjective& rhs); + + /// Destructor + virtual ~ClpLinearObjective (); + + /// Clone + virtual ClpObjective * clone() const; + /** Subset clone. Duplicates are allowed + and order is as given. + */ + virtual ClpObjective * subsetClone (int numberColumns, + const int * whichColumns) const; + + //@} + + //--------------------------------------------------------------------------- + +private: + ///@name Private member data + /// Objective + double * objective_; + /// number of columns + int numberColumns_; + //@} +}; + +#endif |