PlayaSimpleScaledOpDecl.hpp

00001 /* @HEADER@ */
00002 //   
00003 /* @HEADER@ */
00004 
00005 #ifndef PLAYA_SIMPLE_SCALED_OP_DECL_HPP
00006 #define PLAYA_SIMPLE_SCALED_OP_DECL_HPP
00007 
00008 
00009 
00010 #include "PlayaDefs.hpp"
00011 #include "PlayaLinearOpWithSpacesDecl.hpp"
00012 #include "PlayaLinearOperatorDecl.hpp"
00013 
00014 
00015 namespace Playa
00016 {
00017 using namespace Teuchos;
00018 
00019 
00020 
00021 
00025 template <class Scalar>
00026 class SimpleScaledOp : public LinearOpWithSpaces<Scalar>,
00027                        public Printable
00028 {
00029 public:
00031   SimpleScaledOp(const Scalar& alpha, const LinearOperator<Scalar>& A);
00032   
00034   void apply(Teuchos::ETransp transApplyType,
00035     const Vector<Scalar>& in,
00036     Vector<Scalar> out) const;
00037 
00038   
00040   std::string description() const ;
00041 
00043   const Scalar& alpha() const {return alpha_;}
00044 
00046   LinearOperator<Scalar> op() const {return A_;}
00047 
00049   void print(std::ostream& os) const ;
00050 
00051 private:
00052   Scalar alpha_;
00053   LinearOperator<Scalar> A_;
00054 };
00055 
00056 
00058 template <class Scalar>
00059 LinearOperator<Scalar> scaledOperator(
00060   const Scalar& scale,
00061   const LinearOperator<Scalar>& op);
00062 
00063 
00064 template <class Scalar> 
00065 LinearOperator<Scalar> operator*(const Scalar& a, const LinearOperator<Scalar>& A);
00066 
00067 }
00068 
00069 #endif
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