GslBlockMatrix.h

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//-----------------------------------------------------------------------bl-
//--------------------------------------------------------------------------
//
// QUESO - a library to support the Quantification of Uncertainty
// for Estimation, Simulation and Optimization
//
// Copyright (C) 2008-2017 The PECOS Development Team
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the Version 2.1 GNU Lesser General
// Public License as published by the Free Software Foundation.
//
// 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. 51 Franklin Street, Fifth Floor,
// Boston, MA  02110-1301  USA
//
//-----------------------------------------------------------------------el-

#ifndef UQ_GSL_BLOCK_MATRIX_H
#define UQ_GSL_BLOCK_MATRIX_H

#include <vector>
#include <queso/Environment.h>
#include <queso/Matrix.h>
#include <queso/GslVector.h>
#include <queso/GslMatrix.h>
#include <queso/VectorSpace.h>

namespace QUESO {

class GslBlockMatrix : Matrix
{
public:


  GslBlockMatrix(const std::vector<unsigned int> & blockSizes,
      const GslVector & v, double diagValue);

  ~GslBlockMatrix();

  virtual unsigned int numRowsLocal() const;

  virtual unsigned int numRowsGlobal() const;

  virtual unsigned int numCols() const;

  virtual int chol();

  virtual void zeroLower(bool includeDiagonal=false);

  virtual void zeroUpper(bool includeDiagonal=false);

  GslMatrix & getBlock(unsigned int i) const;

  unsigned int numBlocks() const;


  void invertMultiply(const GslVector & b, GslVector & x) const;


  virtual void print (std::ostream & os) const;

private:
  std::vector<VectorSpace<GslVector, GslMatrix> *> m_vectorSpaces;
  std::vector<GslMatrix *> m_blocks;
};

std::ostream & operator<<(std::ostream & os, const GslBlockMatrix & obj);

}  // End namespace QUESO

#endif // UQ_GSL_BLOCK_MATRIX_H