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EpetraExt_Reindex_LinearProblem.cpp
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4// EpetraExt: Epetra Extended - Linear Algebra Services Package
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41
43
46
48#include <Epetra_CrsMatrix.h>
49#include <Epetra_MultiVector.h>
50#include <Epetra_Map.h>
51
52namespace EpetraExt {
53
56{
57 if( newObj_ ) delete newObj_;
58
59 if( MatTrans_ ) delete MatTrans_;
60 if( LHSTrans_ ) delete LHSTrans_;
61 if( RHSTrans_ ) delete RHSTrans_;
62
63 if( NewRowMapOwned_ ) delete NewRowMap_;
64}
65
68operator()( OriginalTypeRef orig )
69{
70 Epetra_CrsMatrix * OldMatrix = dynamic_cast<Epetra_CrsMatrix*>( orig.GetMatrix() );
71 Epetra_MultiVector * OldRHS = orig.GetRHS();
72 Epetra_MultiVector * OldLHS = orig.GetLHS();
73 const Epetra_BlockMap & OldRowMap = OldMatrix->Map();
74
75 //If new map not passed in create one with lex ordering
76 if( !NewRowMap_ )
77 {
78 int NumMyElements = OldRowMap.NumMyElements();
79
80#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES
81 if(OldRowMap.GlobalIndicesInt()) {
82 int NumGlobalElements = OldRowMap.NumGlobalElements();
83 NewRowMap_ = new Epetra_Map( NumGlobalElements, NumMyElements, 0, OldRowMap.Comm() );
84 }
85 else
86#endif
87#ifndef EPETRA_NO_64BIT_GLOBAL_INDICES
88 if(OldRowMap.GlobalIndicesLongLong()) {
89 long long NumGlobalElements = OldRowMap.NumGlobalElements64();
90 NewRowMap_ = new Epetra_Map( NumGlobalElements, NumMyElements, 0LL, OldRowMap.Comm() );
91 }
92 else
93#endif
94 throw "LinearProblem_Reindex::operator(): GlobalIndices type unknown for OldRowMap";
95
96 NewRowMapOwned_ = true;
97 }
98
102
103 Epetra_CrsMatrix * NewMatrix = &((*MatTrans_)( *OldMatrix ));
104 Epetra_MultiVector * NewLHS = &((*LHSTrans_)( *OldLHS ));
105 Epetra_MultiVector * NewRHS = &((*RHSTrans_)( *OldRHS ));
106
107 newObj_ = new Epetra_LinearProblem( NewMatrix, NewLHS, NewRHS );
108
109 return *newObj_;
110}
111
112} //namespace EpetraExt
113
Given an Epetra_CrsMatrix, a "reindexed" version is returned based on the new row map.
NewTypeRef operator()(OriginalTypeRef orig)
Constructs a new view the original LP, "reindexed" using the given NewRowMap.
Given an input Epetra_MultiVector, a "reindexed" view is returned.
long long NumGlobalElements64() const
bool GlobalIndicesInt() const
int NumGlobalElements() const
const Epetra_Comm & Comm() const
int NumMyElements() const
bool GlobalIndicesLongLong() const
const Epetra_BlockMap & Map() const
EpetraExt::BlockCrsMatrix: A class for constructing a distributed block matrix.