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// Copyright (C) 2007 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// Authors: Andreas Waechter IBM 2007-04-17
#ifndef __IPTDEPENDENCYDETECTOR_HPP__
#define __IPTDEPENDENCYDETECTOR_HPP__
#include "IpAlgStrategy.hpp"
#include <list>
namespace Ipopt
{
/** Base class for all derived algorithms for detecting linearly
* dependent rows in the constraint Jacobian.
*/
class TDependencyDetector: public AlgorithmStrategyObject
{
public:
/** @name Constructor/Destructor */
///@{
TDependencyDetector()
{ }
virtual ~TDependencyDetector()
{ }
///@}
/** Has to be called to initialize and reset these objects. */
virtual bool InitializeImpl(
const OptionsList& options,
const std::string& prefix
) = 0;
/** Method determining the number of linearly dependent rows in
* the matrix and the indices of those rows.
*
* We assume that the
* matrix is available in "Triplet" format (MA28 format), and
* that the arrays given to this method can be modified
* internally, i.e., they are not used by the calling program
* anymore after this call.
*
* @return false if there was a problem with the underlying linear solver
*/
virtual bool DetermineDependentRows(
Index n_rows,
Index n_cols,
Index n_jac_nz,
Number* jac_c_vals,
Index* jac_c_iRow,
Index* jac_c_jCol,
std::list<Index>& c_deps
) = 0;
private:
/**@name Default Compiler Generated Methods
* (Hidden to avoid implicit creation/calling).
* These methods are not implemented and
* we do not want the compiler to implement
* them for us, so we declare them private
* and do not define them. This ensures that
* they will not be implicitly created/called. */
///@{
/** Copy Constructor */
TDependencyDetector(
const TDependencyDetector&
);
/** Default Assignment Operator */
void operator=(
const TDependencyDetector&
);
///@}
};
} // namespace Ipopt
#endif