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// ***********************************************************************
//
// AztecOO: An Object-Oriented Aztec Linear Solver Package
// Copyright (2002) 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.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
//
// ***********************************************************************
//@HEADER
*/
#ifndef _AZTEC2PETRA_H_
#define _AZTEC2PETRA_H_
#ifndef __cplusplus
#define __cplusplus
#endif
#include "az_aztec.h"
#ifdef AZTEC_MPI
#include "Epetra_MpiComm.h"
#else
#include "Epetra_SerialComm.h"
#endif
#include "Epetra_Map.h"
#include "Epetra_Vector.h"
#include "Epetra_VbrMatrix.h"
#include "Epetra_CrsMatrix.h"
/*! \file
\brief Aztec2Petra: A function that converts an Aztec linear problem to a Petra linear problem.
Aztec2Petra takes the Aztec proc_config, Amat, az_x and az_b objects and converts them into
corresponding Petra equivalents: comm, map (layout information), A, x, and b. This function
is used by AZOO_iterate, but can be used independently by someone making a transistion from
Aztec to Trilinos/AztecOO.
*/
/*! \fn int Aztec2Petra(int * proc_config,
AZ_MATRIX * Amat, double * az_x,double * az_b,
Epetra_Comm * &comm,
Epetra_BlockMap * & map,
Epetra_RowMatrix * &A,
Epetra_Vector * & x,
Epetra_Vector * & b,
int ** global_indices)
\brief Converts from an Aztec linear problem to a Petra linear problem.
\param proc_config (In)
Aztec array containing information about the parallel machine.
\param Amat (In)
An Aztec AZ_MATRIX structure. Must be an MSR or VBR matrix at this time.
\param az_x (In)
The Aztec initial guess/solution vector. Must be of adequate length on each processor
for any ghost values (unnecessary in uniprocessor mode).
\param az_b (In)
The Aztec right hand side vector. .
\param comm (Out)
A pointer to a Epetra_Comm object. Must be deleted by the caller of this function.
\param map (Out)
A pointer to a Epetra_BlockMap object. Must be deleted by the caller of this function.
Note: This object may actually be a Epetra_Map object, but Epetra_BlockMap is a base
clase for Epetra_Map.
\param A (Out)
A pointer to a Epetra_RowMatrix object containing a \bf deep copy of the matrix in Amat, if
the user matrix is an Msr matrix. It is a \bf shallow copy of the matrix if the user matrix
is in Vbr format.
Must be deleted by the caller of this function. Note: This pointer will actually point to a
Epetra_CrsMatrix or a Epetra_VbrMatrix. We cast the pointer to a Epetra_RowMatrix
because it is the abstract base class used by AztecOO.
\param x (Out)
A pointer to a Epetra_Vector object containing a \bf shallow copy (view) of az_x.
Must be deleted by the caller of this function.
\param b (Out)
A pointer to a Epetra_Vector object containing a \bf shallow copy (view) of az_b.
Must be deleted by the caller of this function.
\param global_indices (Out)
A pointer to an internally created integer array. If the user matrix is in Vbr format,
this array contains a copy of the column index values in global mode. By using this
array, we can avoid a deep copy of the user matrix in this case. SPECIAL NOTE: This array
must be delete using the special Aztec function as follows:
if (global_indices!=0) AZ_free((void *) global_indices);
*/
int Aztec2Petra(int * proc_config,
AZ_MATRIX * Amat, double * az_x,double * az_b,
Epetra_Comm * &comm,
Epetra_BlockMap * & map,
Epetra_RowMatrix * &A,
Epetra_Vector * & x,
Epetra_Vector * & b,
int ** global_indices);
#endif /* _AZTEC2PETRA_H_ */
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