AbstractLinAlgPack_MatrixSymIdent.hpp

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// Moocho: Multi-functional Object-Oriented arCHitecture for Optimization
//                  Copyright (2003) Sandia Corporation
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#ifndef ALAP_MATRIX_SYM_IDENTITY_H
#define ALAP_MATRIX_SYM_IDENTITY_H

#include "AbstractLinAlgPack_MatrixSymOpNonsing.hpp"
#include "AbstractLinAlgPack_VectorSpace.hpp"

namespace AbstractLinAlgPack {

class MatrixSymIdent : virtual public MatrixSymOpNonsing {
public:
  

  MatrixSymIdent(
    const VectorSpace::space_ptr_t&          vec_space = Teuchos::null
    ,const value_type                        scale     = 1.0
    );

  void initialize(
    const VectorSpace::space_ptr_t&          vec_space
    ,const value_type                        scale       = 1.0
  );



  value_type scale() const;



  size_type rows() const;
  size_type nz() const;



  const VectorSpace& space_cols() const;
  std::ostream& output(std::ostream& out) const;
  void Vp_StMtV(
    VectorMutable* v_lhs, value_type alpha, BLAS_Cpp::Transp trans_rhs1
    ,const Vector& v_rhs2, value_type beta ) const;



  void V_InvMtV(
    VectorMutable* v_lhs, BLAS_Cpp::Transp trans_rhs1
    ,const Vector& v_rhs2 ) const;


private:

  VectorSpace::space_ptr_t  vec_space_;
  value_type                scale_;
  
}; // end class MatrixSymIdent

// ///////////////////////////////////////////
// Inline members

inline
value_type MatrixSymIdent::scale() const
{
  return scale_;
}

} // end namespace AbstractLinAlgPack

#endif // ALAP_MATRIX_SYM_IDENTITY_H