Eigen/src/Core/IO.h

// This file is part of Eigen, a lightweight C++ template library
// for linear algebra. Eigen itself is part of the KDE project.
//
// Copyright (C) 2006-2008 Benoit Jacob <jacob@math.jussieu.fr>
//
// Eigen 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 3 of the License, or (at your option) any later version.
//
// Alternatively, you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of 
// the License, or (at your option) any later version.
//
// Eigen 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 or the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public 
// License and a copy of the GNU General Public License along with
// Eigen. If not, see <http://www.gnu.org/licenses/>.

#ifndef EIGEN_IO_H
#define EIGEN_IO_H

template<typename Derived>
std::ostream & ei_print_matrix
(std::ostream & s,
 const MatrixBase<Derived> & m)
{
  for(int i = 0; i < m.rows(); i++)
  {
    s << m.coeff(i, 0);
    for(int j = 1; j < m.cols(); j++)
      s << " " << m.coeff(i, j);
    if( i < m.rows() - 1)
      s << "\n";
  }
  return s;
}

/** \relates MatrixBase
  *
  * Outputs the matrix, laid out as an array as usual, to the given stream.
  */
template<typename Derived>
std::ostream & operator <<
(std::ostream & s,
 const MatrixBase<Derived> & m)
{
  return ei_print_matrix(s, m.eval());
}

#endif // EIGEN_IO_H