EpetraLinearOpTestHelpers.hpp

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//    Thyra: Interfaces and Support for Abstract Numerical Algorithms
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#include "EpetraThyraAdaptersTestHelpers.hpp"
 
 
namespace {
 
 
RCP<Epetra_CrsMatrix> getEpetraMatrix(int numRows, int numCols, double shift=0.0) 
{
 
  const RCP<const Epetra_Comm> comm = getEpetraComm();
 
  const Epetra_Map rowMap(numRows, 0, *comm);
  const Epetra_Map domainMap(numCols, numCols, 0, *comm);
 
  const RCP<Epetra_CrsMatrix> epetraCrsM =
    rcp(new Epetra_CrsMatrix(Copy, rowMap, numCols));
 
  Array<double> rowEntries(numCols);
  Array<int> columnIndices(numCols);
  for (int j = 0; j < numCols; ++j) {
    columnIndices[j] = j;
  }
 
  const int numLocalRows = rowMap.NumMyElements();
 
  for (int i = 0; i < numLocalRows; ++i) {
    
    for (int j = 0; j < numCols; ++j) {
      rowEntries[j] = as<double>(i+1) + as<double>(j+1) / 10 + shift;
    }
 
    epetraCrsM->InsertMyValues( i, numCols, &rowEntries[0], &columnIndices[0] );
 
  }
 
  epetraCrsM->FillComplete(domainMap, rowMap);
 
  return epetraCrsM;
}
 
 
} // namespace