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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.
//
// Authors: Carl Laird, Andreas Waechter IBM 2004-08-13
#ifndef __IPZEROSYMMATRIX_HPP__
#define __IPZEROSYMMATRIX_HPP__
#include "IpUtils.hpp"
#include "IpSymMatrix.hpp"
namespace Ipopt
{
/** Class for Symmetric Matrices with only zero entries. */
class IPOPTLIB_EXPORT ZeroSymMatrix: public SymMatrix
{
public:
/**@name Constructors / Destructors */
///@{
/** Constructor, taking the corresponding matrix space. */
ZeroSymMatrix(
const SymMatrixSpace* owner_space
);
/** Destructor */
~ZeroSymMatrix();
///@}
protected:
/**@name Methods overloaded from matrix */
///@{
virtual void MultVectorImpl(
Number alpha,
const Vector& x,
Number beta,
Vector& y
) const;
virtual void TransMultVectorImpl(
Number alpha,
const Vector& x,
Number beta,
Vector& y
) 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 */
ZeroSymMatrix();
/** Copy Constructor */
ZeroSymMatrix(
const ZeroSymMatrix&
);
/** Default Assignment Operator */
void operator=(
const ZeroSymMatrix&
);
///@}
};
/** Class for matrix space for ZeroSymMatrix. */
class IPOPTLIB_EXPORT ZeroSymMatrixSpace: public SymMatrixSpace
{
public:
/** @name Constructors / Destructors */
///@{
/** Constructor, given the number of row and columns. */
ZeroSymMatrixSpace(
Index dim
)
: SymMatrixSpace(dim)
{ }
/** Destructor */
virtual ~ZeroSymMatrixSpace()
{ }
///@}
virtual Matrix* MakeNew() const
{
return MakeNewZeroSymMatrix();
}
virtual SymMatrix* MakeNewSymMatrix() const
{
return MakeNewZeroSymMatrix();
}
/** Method for creating a new matrix of this specific type. */
ZeroSymMatrix* MakeNewZeroSymMatrix() const
{
return new ZeroSymMatrix(this);
}
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 */
ZeroSymMatrixSpace();
/** Copy Constructor */
ZeroSymMatrixSpace(
const ZeroSymMatrixSpace&
);
/** Default Assignment Operator */
void operator=(
const ZeroSymMatrixSpace&
);
///@}
};
} // namespace Ipopt
#endif