IpZeroSymMatrix.hpp

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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 IPOPTLIB_EXPORT ZeroSymMatrix: public SymMatrix
{
public:
 
   ZeroSymMatrix(
      const SymMatrixSpace* owner_space
   );
 
   ~ZeroSymMatrix();
 
protected:
   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:
 
   ZeroSymMatrix();
 
   ZeroSymMatrix(
      const ZeroSymMatrix&
   );
 
   void operator=(
      const ZeroSymMatrix&
   );
};
 
class IPOPTLIB_EXPORT ZeroSymMatrixSpace: public SymMatrixSpace
{
public:
 
   ZeroSymMatrixSpace(
      Index dim
   )
      : SymMatrixSpace(dim)
   { }
 
   virtual ~ZeroSymMatrixSpace()
   { }
 
   virtual Matrix* MakeNew() const
   {
      return MakeNewZeroSymMatrix();
   }
 
   virtual SymMatrix* MakeNewSymMatrix() const
   {
      return MakeNewZeroSymMatrix();
   }
 
   ZeroSymMatrix* MakeNewZeroSymMatrix() const
   {
      return new ZeroSymMatrix(this);
   }
 
private:
 
   ZeroSymMatrixSpace();
 
   ZeroSymMatrixSpace(
      const ZeroSymMatrixSpace&
   );
 
   void operator=(
      const ZeroSymMatrixSpace&
   );
};
 
} // namespace Ipopt
#endif