////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 1996-2021 The Octave Project Developers
//
// See the file COPYRIGHT.md in the top-level directory of this
// distribution or <https://octave.org/copyright/>.
//
// 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.
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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////////////////////////////////////////////////////////////////////////

#if ! defined (octave_LSODE_h)
#define octave_LSODE_h 1

#include "octave-config.h"

#include <string>

#include "Array.h"
#include "LSODE-opts.h"

class
OCTAVE_API
LSODE : public ODE, public LSODE_options
{
public:

  LSODE (void)
    : ODE (), LSODE_options (), initialized (false), method_flag (0),
      itask (0), iopt (0), itol (0), liw (0), lrw (0),
      iwork (), rwork (), rel_tol (0.0), abs_tol () { }

  LSODE (const ColumnVector& s, double tm, const ODEFunc& f)
    : ODE (s, tm, f), LSODE_options (), initialized (false), method_flag (0),
      itask (0), iopt (0), itol (0), liw (0), lrw (0),
      iwork (), rwork (), rel_tol (0.0), abs_tol () { }

  ~LSODE (void) = default;

  ColumnVector do_integrate (double t);

  Matrix do_integrate (const ColumnVector& tout);

  Matrix do_integrate (const ColumnVector& tout, const ColumnVector& tcrit);

  std::string error_message (void) const;

private:

  bool initialized;

  octave_f77_int_type method_flag;
  octave_f77_int_type itask;
  octave_f77_int_type iopt;
  octave_f77_int_type itol;

  octave_f77_int_type liw;
  octave_f77_int_type lrw;

  Array<octave_f77_int_type> iwork;
  Array<double> rwork;

  double rel_tol;

  Array<double> abs_tol;
};

#endif