/*

Copyright (C) 1994-2015 John W. Eaton

This file is part of Octave.

Octave is free software; 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 3 of the License, or (at your
option) any later version.

Octave 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 General Public License
for more details.

You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING.  If not, see
<http://www.gnu.org/licenses/>.

*/

#if ! defined (octave_hess_h)
#define octave_hess_h 1

#include "octave-config.h"

#include <iosfwd>

template <typename T>
class
hess
{
public:

  hess (void)
    : hess_mat (), unitary_hess_mat ()
  { }

  hess (const T& a)
    : hess_mat (), unitary_hess_mat ()
  {
    init (a);
  }

  hess (const T& a, octave_idx_type& info)
    : hess_mat (), unitary_hess_mat ()
  {
    info = init (a);
  }

  hess (const hess& a)
    : hess_mat (a.hess_mat), unitary_hess_mat (a.unitary_hess_mat)
  { }

  hess& operator = (const hess& a)
  {
    if (this != &a)
      {
        hess_mat = a.hess_mat;
        unitary_hess_mat = a.unitary_hess_mat;
      }

    return *this;
  }

  ~hess (void) { }

  T hess_matrix (void) const { return hess_mat; }

  T unitary_hess_matrix (void) const { return unitary_hess_mat; }

private:

  T hess_mat;
  T unitary_hess_mat;

  octave_idx_type init (const T& a);
};

template <typename T>
extern std::ostream&
operator << (std::ostream& os, const hess<T>& a);

#endif