Epetra_Import_Util.h

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//               Epetra: Linear Algebra Services Package
//                 Copyright 2011 Sandia Corporation
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#ifndef EPETRA_IMPORT_UTIL_H
#define EPETRA_IMPORT_UTIL_H

#include "Epetra_ConfigDefs.h"
#include "Epetra_Object.h"
#include "Epetra_CrsMatrix.h"
#include <vector>
class Epetra_Map;
class Epetra_CrsMatrix;
class Epetra_Import;


namespace Epetra_Import_Util {

//=========================================================================

int EPETRA_LIB_DLL_EXPORT PackAndPrepareWithOwningPIDs(
         const Epetra_CrsMatrix & SourceMatrix,
         int NumExportIDs,
         int * ExportLIDs,
         int & LenExports,
         char *& Exports,
         int & SizeOfPacket,
         int * Sizes,
         bool & VarSizes,
         std::vector<int>& SourcePids);

// ===================================================================

int EPETRA_LIB_DLL_EXPORT UnpackWithOwningPIDsCount(
          const Epetra_CrsMatrix& SourceMatrix,
            int NumSameIDs,
            int NumRemoteIDs,
            const int * RemoteLIDs,
            int NumPermuteIDs,
            const int *PermuteToLIDs,
            const int *PermuteFromLIDs,
            int LenImports,
            char* Imports);

// ===================================================================

int EPETRA_LIB_DLL_EXPORT UnpackAndCombineIntoCrsArrays(
          const Epetra_CrsMatrix& SourceMatrix,
          int NumSameIDs,
          int NumRemoteIDs,
          const int * RemoteLIDs,
          int NumPermuteIDs,
          const int *PermuteToLIDs,
          const int *PermuteFromLIDs,
          int LenImports,
          char* Imports,
          int TargetNumRows,
          int TargetNumNonzeros,
          int MyTargetPID,
          int * CSR_rowptr,
          int * CSR_colind,
          double * CSR_values,
          const std::vector<int> &SourcePids,
          std::vector<int> &TargetPids);
// ===================================================================

int EPETRA_LIB_DLL_EXPORT UnpackAndCombineIntoCrsArrays(
          const Epetra_CrsMatrix& SourceMatrix,
          int NumSameIDs,
          int NumRemoteIDs,
          const int * RemoteLIDs,
          int NumPermuteIDs,
          const int *PermuteToLIDs,
          const int *PermuteFromLIDs,
          int LenImports,
          char* Imports,
          int TargetNumRows,
          int TargetNumNonzeros,
          int MyTargetPID,
          int * CSR_rowptr,
          long long * CSR_colind,
          double * CSR_values,
          const std::vector<int> &SourcePids,
          std::vector<int> &TargetPids);



// ===================================================================

#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES
int LowCommunicationMakeColMapAndReindex(int N, const int *rowptr, int *colind, const Epetra_Map& domainMap,
           const int *owningPIDs, bool SortGhostsAssociatedWithEachProcessor,
           std::vector<int>& RemotePIDs, Epetra_BlockMap & NewColMap);
#endif
// ===================================================================

#ifndef EPETRA_NO_64BIT_GLOBAL_INDICES
int LowCommunicationMakeColMapAndReindex(int N, const int *rowptr, int *colind_LID, long long *colind_GID, const Epetra_Map& domainMap,
           const int *owningPIDs, bool SortGhostsAssociatedWithEachProcessor, std::vector<int>& RemotePIDs, Epetra_BlockMap & NewColMap);
#endif

} /* Epetra_Import_Util namespace */

#endif /* EPETRA_IMPORT_UTIL_H */