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// ***********************************************************************
//
// Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
// Copyright (2003) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov)
//
// ***********************************************************************
// @HEADER
#ifndef SPARSE_PTR_ELEMENT_H
#define SPARSE_PTR_ELEMENT_H
#include "AbstractLinAlgPack_Types.hpp"
namespace AbstractLinAlgPack {
/** \brief Sparse pointer element type.
*
* This class abstracts a sparse element of a templated
* type. It is ment to be used in a sparse vector. It
* has a pointer to the value of the element.
*
* The default assignment operator and copy constructor
* are allowed.
*/
template <class T_Indice, class T_Value>
class SparsePtrElement {
public:
/** @name Public Typedefs. */
//@{
/** \brief . */
typedef T_Value value_type;
/** \brief . */
typedef T_Indice indice_type;
//@}
/** @name Constructors */
//@{
/// Construct uninitialized (poiner to value set to zero) (#indice() == 0#).
SparsePtrElement() : indice_(0), pvalue_(0)
{}
/// Construct with a pointer to the value and indice set
SparsePtrElement(indice_type indice, value_type* pvalue) : indice_(indice), pvalue_(pvalue)
{}
//@}
/** @name Value and indice access */
//@{
/** \brief . */
value_type& value()
{
return *pvalue_;
}
/** \brief . */
value_type value() const
{
return *pvalue_;
}
/** \brief . */
indice_type indice() const
{
return indice_;
}
/// Change the indice
void change_indice(indice_type indice)
{
indice_ = indice;
}
/// Change the element pointer
void change_value_ptr(value_type* pvalue)
{
pvalue_ = pvalue;
}
//@}
private:
indice_type indice_;
value_type* pvalue_;
}; // end class SparsePtrElement
} // end namespace AbstractLinAlgPack
#endif // SPARSE_PTR_ELEMENT_H
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