/home/coin/SVN-release/CoinAll-1.1.0/Ipopt/src/LinAlg/TMatrices/IpSymTMatrix.hpp

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// Copyright (C) 2004, 2006 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Common Public License.
//
// $Id: IpSymTMatrix.hpp 699 2006-04-05 21:05:18Z andreasw $
//
// Authors:  Carl Laird, Andreas Waechter     IBM    2004-08-13

#ifndef __IPSYMTMATRIX_HPP__
#define __IPSYMTMATRIX_HPP__

#include "IpUtils.hpp"
#include "IpSymMatrix.hpp"

namespace Ipopt
{

  /* forward declarations */
  class SymTMatrixSpace;

  class SymTMatrix : public SymMatrix
  {
  public:


    SymTMatrix(const SymTMatrixSpace* owner_space);

    ~SymTMatrix();

    void SetValues(const Number* Values);

    Index Nonzeros() const;

    const Index* Irows() const;

    const Index* Jcols() const;

    Number* Values();
    const Number* Values() const;

    void FillStruct(ipfint* Irn, ipfint* Jcn) const;

    void FillValues(Number* Values) const;

  protected:
    virtual void MultVectorImpl(Number alpha, const Vector& x, Number beta,
                                Vector& y) const;

    virtual bool HasValidNumbersImpl() const;

    virtual void PrintImpl(const Journalist& jnlst,
                           EJournalLevel level,
                           EJournalCategory category,
                           const std::string& name,
                           Index indent,
                           const std::string& prefix) const;

  private:
    SymTMatrix();

    SymTMatrix(const SymTMatrix&);

    void operator=(const SymTMatrix&);

    const SymTMatrixSpace* owner_space_;

    Number* values_;

    bool initialized_;

  };

  class SymTMatrixSpace : public SymMatrixSpace
  {
  public:
    SymTMatrixSpace(Index dim, Index nonZeros, const Index* iRows,
                    const Index* jCols);

    ~SymTMatrixSpace();

    virtual SymMatrix* MakeNewSymMatrix() const
    {
      return MakeNewSymTMatrix();
    }

    SymTMatrix* MakeNewSymTMatrix() const
    {
      return new SymTMatrix(this);
    }

    Index Nonzeros() const
    {
      return nonZeros_;
    }

    const Index* Irows() const
    {
      return iRows_;
    }

    const Index* Jcols() const
    {
      return jCols_;
    }

  private:
    Number* AllocateInternalStorage() const;

    void FreeInternalStorage(Number* values) const;

    const Index nonZeros_;
    Index* iRows_;
    Index* jCols_;

    friend class SymTMatrix;
  };

  /* Inline Methods */
  inline
  Index SymTMatrix::Nonzeros() const
  {
    return owner_space_->Nonzeros();
  }

  inline
  const Index* SymTMatrix::Irows() const
  {
    return owner_space_->Irows();
  }

  inline
  const Index* SymTMatrix::Jcols() const
  {
    return owner_space_->Jcols();
  }


} // namespace Ipopt
#endif

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