RTOpPack_ROpNorm1.hpp

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00001 // @HEADER
00002 // ***********************************************************************
00003 // 
00004 // RTOp: Interfaces and Support Software for Vector Reduction Transformation
00005 //       Operations
00006 //                Copyright (2006) Sandia Corporation
00007 // 
00008 // Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
00009 // license for use of this work by or on behalf of the U.S. Government.
00010 // 
00011 // This library is free software; you can redistribute it and/or modify
00012 // it under the terms of the GNU Lesser General Public License as
00013 // published by the Free Software Foundation; either version 2.1 of the
00014 // License, or (at your option) any later version.
00015 //  
00016 // This library is distributed in the hope that it will be useful, but
00017 // WITHOUT ANY WARRANTY; without even the implied warranty of
00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00019 // Lesser General Public License for more details.
00020 //  
00021 // You should have received a copy of the GNU Lesser General Public
00022 // License along with this library; if not, write to the Free Software
00023 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00024 // USA
00025 // Questions? Contact Roscoe A. Bartlett (rabartl@sandia.gov) 
00026 // 
00027 // ***********************************************************************
00028 // @HEADER
00029 
00030 #ifndef RTOPPACK_ROP_NORM1_HPP
00031 #define RTOPPACK_ROP_NORM1_HPP
00032 
00033 #include "RTOpPack_RTOpTHelpers.hpp"
00034 
00035 namespace RTOpPack {
00036 
00039 template<class Scalar>
00040 class ROpNorm1
00041   : public ROpScalarReductionBase<Scalar,typename Teuchos::ScalarTraits<Scalar>::magnitudeType>
00042 {
00043 public:
00045   typedef   typename Teuchos::ScalarTraits<Scalar>::magnitudeType  ScalarMag;
00047   ROpNorm1() : RTOpT<Scalar>("ROpNorm1") {}
00049   ScalarMag operator()(const ReductTarget& reduct_obj ) const
00050     { return this->getRawVal(reduct_obj); }
00054   void apply_op(
00055     const int   num_vecs,       const ConstSubVectorView<Scalar>    sub_vecs[]
00056     ,const int  num_targ_vecs,  const SubVectorView<Scalar>         targ_sub_vecs[]
00057     ,ReductTarget *_reduct_obj
00058     ) const
00059     {
00060       using Teuchos::dyn_cast;
00061       ReductTargetScalar<ScalarMag>
00062         &reduct_obj = dyn_cast<ReductTargetScalar<ScalarMag> >(*_reduct_obj); 
00063       RTOP_APPLY_OP_1_0(num_vecs,sub_vecs,num_targ_vecs,targ_sub_vecs);
00064       ScalarMag norm1 = reduct_obj.get();
00065       if( v0_s == 1 ) {
00066         for( Teuchos_Index i = 0; i < subDim; ++i )
00067           norm1 += Teuchos::ScalarTraits<Scalar>::magnitude(*v0_val++);
00068       }
00069       else {
00070         for( Teuchos_Index i = 0; i < subDim; ++i, v0_val += v0_s )
00071           norm1 += Teuchos::ScalarTraits<Scalar>::magnitude(*v0_val);
00072       }
00073       reduct_obj.set(norm1);
00074     }
00076 }; // class ROpNorm1
00077 
00078 } // namespace RTOpPack
00079 
00080 #endif // RTOPPACK_ROP_NORM1_HPP

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