BelosOperator.hpp

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//
//                 Belos: Block Linear Solvers Package
//                 Copyright (2004) 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.
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// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
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#ifndef BELOS_OPERATOR_HPP
#define BELOS_OPERATOR_HPP

#include "BelosOperatorTraits.hpp"
#include "BelosMultiVec.hpp"
#include "BelosTypes.hpp"
#include "BelosConfigDefs.hpp"

namespace Belos {
  
  template <class ScalarType>
  class Operator {
  public:
    

    
    Operator() {};
    
    virtual ~Operator() {};
    

    
    virtual ReturnType Apply ( const MultiVec<ScalarType>& x, 
             MultiVec<ScalarType>& y, ETrans trans=NOTRANS ) const = 0;
  };
  
  //
  // Implementation of the Belos::OperatorTraits for Belos::Operator 
  //                                               and Belos::MultiVec.
  //
  
  template <class ScalarType> 
  class OperatorTraits < ScalarType, MultiVec<ScalarType>, Operator<ScalarType> > 
  {
  public:
    
    static ReturnType Apply ( const Operator<ScalarType>& Op, 
            const MultiVec<ScalarType>& x, 
            MultiVec<ScalarType>& y,
            ETrans trans=NOTRANS )
    { return Op.Apply( x, y, trans ); }
    
  };
  
} // end Belos namespace

#endif

// end of file BelosOperator.hpp

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