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RTOpPack_ROpWeightedNorm2.hpp
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00042 
00043 #ifndef RTOPPACK_ROP_WEIGHTED_NORM2_HPP
00044 #define RTOPPACK_ROP_WEIGHTED_NORM2_HPP
00045 
00046 #include "RTOpPack_RTOpTHelpers.hpp"
00047 
00048 
00049 namespace RTOpPack {
00050 
00051 
00053 template<class Scalar>
00054 class ROpWeightedNorm2EleWiseReduction
00055 {
00056 public:
00057   void operator()( const Scalar &v0, const Scalar &v1, Scalar &reduct ) const
00058     {
00059       reduct += v0 * ScalarTraits<Scalar>::conjugate(v1)*v1;
00060     }
00061 };
00062 
00063 
00067 template<class Scalar>
00068 class ROpWeightedNorm2
00069   : public ROp_2_ScalarReduction<Scalar, Scalar,
00070       ROpWeightedNorm2EleWiseReduction<Scalar> >
00071 {
00072 public:
00074   typedef Teuchos::ScalarTraits<Scalar> ST;
00076   ROpWeightedNorm2()
00077     {
00078       this->setOpNameBase("ROpWeightedNorm2");
00079     }
00081   typename ST::magnitudeType operator()(const ReductTarget& reduct_obj ) const
00082     { return ST::magnitude(ST::squareroot(this->getRawVal(reduct_obj))); }
00083 };
00084 
00085 
00086 } // namespace RTOpPack
00087 
00088 
00089 #endif // RTOPPACK_ROP_WEIGHTED_NORM2_HPP
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