Amesos2_MultiVecAdapter_decl.hpp

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#ifndef AMESOS2_MULTIVEC_ADAPTER_DECL_HPP
#define AMESOS2_MULTIVEC_ADAPTER_DECL_HPP

#include <Teuchos_RCP.hpp>
#include <Teuchos_Ptr.hpp>
#include <Teuchos_ArrayView.hpp>
#include <Tpetra_Map.hpp>

#include "Amesos2_TypeDecl.hpp"

namespace Amesos2 {


  template <class MV>
  struct MultiVecAdapter {};

  template <class MV>
  Teuchos::RCP<MultiVecAdapter<MV> >
  createMultiVecAdapter(Teuchos::RCP<MV> mv){
    using Teuchos::rcp;
    
    if(mv.is_null()) return Teuchos::null;
    return( rcp(new MultiVecAdapter<MV>(mv)) );
  }

  template <class MV>
  Teuchos::RCP<const MultiVecAdapter<MV> >
  createConstMultiVecAdapter(Teuchos::RCP<const MV> mv){
    using Teuchos::rcp;
    using Teuchos::rcp_const_cast;
    
    if(mv.is_null()) return Teuchos::null;
    return( rcp(new MultiVecAdapter<MV>(Teuchos::rcp_const_cast<MV,const MV>(mv))).getConst() );
  }


  // Utilities for getting and putting data from MultiVecs //
  
  namespace Util {
    
    /*
     * If the multivector scalar type and the desired scalar tpye are
     * the same, then we can do a simple straight copy.
     */
    template <typename MV>
    struct same_type_get_copy {
      static void apply(const Teuchos::Ptr<const MV>& mv,
      const Teuchos::ArrayView<typename MV::scalar_t>& v,
      const size_t ldx,
      Teuchos::Ptr<const Tpetra::Map<typename MV::local_ordinal_t, typename MV::global_ordinal_t, typename MV::node_t> > distribution_map );
    };

    /*
     * In the case where the scalar type of the multi-vector and the
     * corresponding S type are different, then we need to first get a
     * copy of the scalar values, then convert each one into the S
     * type before inserting into the vals array.
     */
    template <typename MV, typename S>
    struct diff_type_get_copy {
      static void apply(const Teuchos::Ptr<const MV>& mv,
      const Teuchos::ArrayView<S>& v,
      const size_t& ldx,
      Teuchos::Ptr<const Tpetra::Map<typename MV::local_ordinal_t, typename MV::global_ordinal_t, typename MV::node_t> > distribution_map );
    };

    template <class MV, typename S>
    struct get_1d_copy_helper {
      static void do_get(const Teuchos::Ptr<const MV>& mv,
       const Teuchos::ArrayView<S>& vals,
       const size_t ldx,
       Teuchos::Ptr<const Tpetra::Map<typename MV::local_ordinal_t, typename MV::global_ordinal_t, typename MV::node_t> > distribution_map );
      
      static void do_get(const Teuchos::Ptr<const MV>& mv,
       const Teuchos::ArrayView<S>& vals,
       const size_t ldx,
       EDistribution distribution);

      static void do_get(const Teuchos::Ptr<const MV>& mv,
       const Teuchos::ArrayView<S>& vals,
       const size_t ldx);
    };

    /*
     * If the multivector scalar type and the desired scalar tpye are
     * the same, then we can do a simple straight copy.
     */
    template <typename MV>
    struct same_type_data_put {
      static void apply(const Teuchos::Ptr<MV>& mv,
      const Teuchos::ArrayView<typename MV::scalar_t>& data,
      const size_t ldx,
      Teuchos::Ptr<const Tpetra::Map<typename MV::local_ordinal_t, typename MV::global_ordinal_t, typename MV::node_t> > distribution_map );
    };

    /*
     * In the case where the scalar type of the multi-vector and the
     * corresponding S type are different, then we need to first get a
     * copy of the scalar values, then convert each one into the S
     * type before inserting into the vals array.
     */
    template <typename MV, typename S>
    struct diff_type_data_put {
      static void apply(const Teuchos::Ptr<MV>& mv,
      const Teuchos::ArrayView<S>& data,
      const size_t& ldx,
      Teuchos::Ptr<const Tpetra::Map<typename MV::local_ordinal_t, typename MV::global_ordinal_t, typename MV::node_t> > distribution_map );
    };
  
    template <class MV, typename S>
    struct put_1d_data_helper {
      static void do_put(const Teuchos::Ptr<MV>& mv,
       const Teuchos::ArrayView<S>& data,
       const size_t ldx,
       Teuchos::Ptr<const Tpetra::Map<typename MV::local_ordinal_t, typename MV::global_ordinal_t, typename MV::node_t> > distribution_map );
      
      static void do_put(const Teuchos::Ptr<MV>& mv,
       const Teuchos::ArrayView<S>& data,
       const size_t ldx,
       EDistribution distribution);

      static void do_put(const Teuchos::Ptr<MV>& mv,
       const Teuchos::ArrayView<S>& data,
       const size_t ldx);
    };
  }
} // end namespace Amesos2

#include "Amesos2_TpetraMultiVecAdapter_decl.hpp"
#ifdef HAVE_AMESOS2_EPETRA
#  include "Amesos2_EpetraMultiVecAdapter_decl.hpp"
#endif

#endif  // AMESOS2_MULTIVEC_ADAPTER_DECL_HPP