EpetraExt_Scale_LinearProblem.h

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#ifndef EpetraExt_LINEARPROBLEM_SCALE_H
#define EpetraExt_LINEARPROBLEM_SCALE_H
 
#include <vector>
 
#include <EpetraExt_Transform.h>
 
class Epetra_LinearProblem;
class Epetra_Vector;
 
namespace EpetraExt {
 
 
class LinearProblem_Scale : public InPlaceTransform<Epetra_LinearProblem>
{
 public:
 
  enum ScaleType{ Sum, Max, Diag, None };
 
 
  ~LinearProblem_Scale();
 
 
  LinearProblem_Scale( ScaleType left = Sum,
                       ScaleType right = Sum,
                       double exp_fac = 1.0,
                       int iterations = 1 )
  : lScale_(left),
    rScale_(right),
    expFac_(exp_fac),
    iters_(iterations),
    scaled_(false)
  {}
 
 
  bool fwd();
 
 
  bool rvs();
 
 private:
 
  const ScaleType lScale_;
  const ScaleType rScale_;
 
  const double expFac_;
 
  const int iters_;
 
  bool scaled_;
 
  std::vector<Epetra_Vector*> lScaleVecs_;
  std::vector<Epetra_Vector*> rScaleVecs_;
};
 
} //namespace EpetraExt
 
#endif //EpetraExt_LINEARPROBLEM_SCALE_H