Zoltan2
Zoltan2_AlgNatural.hpp
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00005 //   Zoltan2: A package of combinatorial algorithms for scientific computing
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00045 #ifndef _ZOLTAN2_ALGNATURAL_HPP_
00046 #define _ZOLTAN2_ALGNATURAL_HPP_
00047 
00048 #include <Zoltan2_IdentifierModel.hpp>
00049 #include <Zoltan2_OrderingSolution.hpp>
00050 
00051 
00052 namespace Zoltan2{
00053 
00058 
00059 template <typename Adapter>
00060 class AlgNatural
00061 {
00062   public:
00063 
00064   AlgNatural()
00065   {
00066   }
00067 
00068   int order(
00069     const RCP<IdentifierModel<Adapter> > &model, 
00070     const RCP<OrderingSolution<typename Adapter::gid_t,
00071                                typename Adapter::lno_t> > &solution,
00072     const RCP<Teuchos::ParameterList> &pl,
00073     const RCP<Teuchos::Comm<int> > &comm
00074   ) 
00075   {
00076     typedef typename Adapter::lno_t lno_t;
00077 
00078     int ierr= 0;
00079 
00080     HELLO;
00081 
00082     // Local permutation only for now.
00083 
00084     // Set identity permutation.
00085     const size_t n = model->getLocalNumIdentifiers();
00086     lno_t *perm;
00087     perm = (lno_t *) (solution->getPermutationRCP().getRawPtr());
00088     if (perm){
00089       for (size_t i=0; i<n; i++){
00090         perm[i] = i;
00091       }
00092     }
00093     else
00094       // TODO: throw exception?
00095       ierr = -1;
00096 
00097     solution->setHavePerm(true);
00098     return ierr;
00099 
00100   }
00101 
00102 };
00103 }
00104 #endif