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// Copyright (C) 2004, 2008 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// $Id: IpSumSymMatrix.hpp 2269 2013-05-05 11:32:40Z stefan $
//
// Authors: Carl Laird, Andreas Waechter IBM 2004-08-13
#ifndef __IPSUMSYMMATRIX_HPP__
#define __IPSUMSYMMATRIX_HPP__
#include "IpUtils.hpp"
#include "IpSymMatrix.hpp"
namespace Ipopt
{
/* forward declarations */
class SumSymMatrixSpace;
/** Class for Matrices which are sum of symmetric matrices.
* For each term in the we store the matrix and a factor.
*/
class SumSymMatrix : public SymMatrix
{
public:
/**@name Constructors / Destructors */
//@{
/** Constructor, initializing with dimensions of the matrix and
* the number of terms in the sum.
*/
SumSymMatrix(const SumSymMatrixSpace* owner_space);
/** Destructor */
~SumSymMatrix();
//@}
/** Method for setting term iterm for the sum. Note that counting
* of terms starts at 0. */
void SetTerm(Index iterm, Number factor, const SymMatrix& matrix);
/** Method for getting term iterm for the sum. Note that counting
* of terms starts at 0. */
void GetTerm(Index iterm, Number& factor, SmartPtr<const SymMatrix>& matrix) const;
/** Return the number of terms */
Index NTerms() const;
protected:
/**@name Methods overloaded from matrix */
//@{
virtual void MultVectorImpl(Number alpha, const Vector& x,
Number beta, Vector& y) const;
/** Method for determining if all stored numbers are valid (i.e.,
* no Inf or Nan). */
virtual bool HasValidNumbersImpl() const;
virtual void ComputeRowAMaxImpl(Vector& rows_norms, bool init) const;
virtual void ComputeColAMaxImpl(Vector& cols_norms, bool init) const;
virtual void PrintImpl(const Journalist& jnlst,
EJournalLevel level,
EJournalCategory category,
const std::string& name,
Index indent,
const std::string& prefix) const;
//@}
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. */
//@{
/** Default Constructor */
SumSymMatrix();
/** Copy Constructor */
SumSymMatrix(const SumSymMatrix&);
/** Overloaded Equals Operator */
void operator=(const SumSymMatrix&);
//@}
/** std::vector storing the factors for each term. */
std::vector<Number> factors_;
/** std::vector storing the matrices for each term. */
std::vector<SmartPtr<const SymMatrix> > matrices_;
/** Copy of the owner_space as a SumSymMatrixSpace */
const SumSymMatrixSpace* owner_space_;
};
/** Class for matrix space for SumSymMatrix */
class SumSymMatrixSpace : public SymMatrixSpace
{
public:
/** @name Constructors / Destructors */
//@{
/** Constructor, given the dimension of the matrix and the number
* of terms in the sum. */
SumSymMatrixSpace(Index ndim, Index nterms)
:
SymMatrixSpace(ndim),
nterms_(nterms)
{}
/** Destructor */
~SumSymMatrixSpace()
{}
//@}
/** @name Accessor functions */
//@{
/** Number of terms in the sum. */
Index NTerms() const
{
return nterms_;
}
//@}
/** Use this method to set the matrix spaces for the various terms.
* You will not be able to create a matrix until all these spaces
* are set. */
void SetTermSpace(Index term_idx, const SymMatrixSpace& space);
/** Get the matix space for a particular term */
SmartPtr<const SymMatrixSpace> GetTermSpace(Index term_idx) const;
/** Method for creating a new matrix of this specific type. */
SumSymMatrix* MakeNewSumSymMatrix() const;
/** Overloaded MakeNew method for the SymMatrixSpace base class.
*/
virtual SymMatrix* MakeNewSymMatrix() const;
private:
Index nterms_;
std::vector< SmartPtr<const SymMatrixSpace> > term_spaces_;
};
} // namespace Ipopt
#endif
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