/usr/include/trilinos/Galeri_Diag.h is in libtrilinos-galeri-dev 12.10.1-3.
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// ************************************************************************
//
// Galeri: Finite Element and Matrix Generation Package
// Copyright (2006) ETHZ/Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
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// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
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//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
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// @HEADER
#ifndef GALERI_DIAGMATRIX_H
#define GALERI_DIAGMATRIX_H
#include "Galeri_Exception.h"
#include "Epetra_Comm.h"
#include "Epetra_BlockMap.h"
#include "Epetra_Vector.h"
#include "Epetra_CrsMatrix.h"
namespace Galeri {
namespace Matrices {
inline
Epetra_CrsMatrix* Diag(const Epetra_Map* Map, double Value)
{
Epetra_CrsMatrix* Matrix = new Epetra_CrsMatrix(Copy, *Map, 1);
int NumMyElements = Map->NumMyElements();
#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES
if(Map->GlobalIndicesInt()) {
int* MyGlobalElements = Map->MyGlobalElements();
for (int i = 0 ; i < NumMyElements ; ++i)
{
int Indices = MyGlobalElements[i];
Matrix->InsertGlobalValues(MyGlobalElements[i], 1, &Value, &Indices);
}
}
else
#endif
#ifndef EPETRA_NO_64BIT_GLOBAL_INDICES
if(Map->GlobalIndicesLongLong()) {
long long* MyGlobalElements = Map->MyGlobalElements64();
for (int i = 0 ; i < NumMyElements ; ++i)
{
long long Indices = MyGlobalElements[i];
Matrix->InsertGlobalValues(MyGlobalElements[i], 1, &Value, &Indices);
}
}
else
#endif
throw "Galeri::Matrices::Diag: GlobalIndices type unknown";
Matrix->FillComplete();
Matrix->OptimizeStorage();
return(Matrix);
}
Epetra_CrsMatrix* Diag(const Epetra_Map* Map, Epetra_Vector& Vector)
{
Epetra_CrsMatrix* Matrix = new Epetra_CrsMatrix(Copy, *Map, 1);
if (!Map->SameAs(Vector.Map()))
throw(Exception(__FILE__, __LINE__,
"Vector.Map() is not equivalent to input Map"));
int NumMyElements = Map->NumMyElements();
#ifndef EPETRA_NO_32BIT_GLOBAL_INDICES
if(Map->GlobalIndicesInt()) {
int* MyGlobalElements = Map->MyGlobalElements();
for (int i = 0 ; i < NumMyElements ; ++i)
{
int Indices = MyGlobalElements[i];
double Value = Vector[i];
Matrix->InsertGlobalValues(MyGlobalElements[i], 1, &Value, &Indices);
}
}
else
#endif
#ifndef EPETRA_NO_64BIT_GLOBAL_INDICES
if(Map->GlobalIndicesLongLong()) {
long long* MyGlobalElements = Map->MyGlobalElements64();
for (int i = 0 ; i < NumMyElements ; ++i)
{
long long Indices = MyGlobalElements[i];
double Value = Vector[i];
Matrix->InsertGlobalValues(MyGlobalElements[i], 1, &Value, &Indices);
}
}
else
#endif
throw "Galeri::Matrices::Diag: GlobalIndices type unknown";
Matrix->FillComplete();
Matrix->OptimizeStorage();
return(Matrix);
}
} // namespace Matrices
} // namespace Galeri
#endif
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