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- // ODE.h -*- C++ -*-
- /*
-
- Copyright (C) 1992, 1993, 1994, 1995 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 2, 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, write to the Free
- Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- */
-
- #if !defined (octave_ODE_h)
- #define octave_ODE_h 1
-
- class ostream;
-
- #include "dMatrix.h"
- #include "dColVector.h"
- #include "ODEFunc.h"
-
- extern "C++" {
-
- class ODE_options
- {
- public:
-
- ODE_options (void);
- ODE_options (const ODE_options& opt);
-
- ODE_options& operator = (const ODE_options& opt);
-
- ~ODE_options (void);
-
- void init (void);
- void copy (const ODE_options& opt);
-
- void set_default_options (void);
-
- void set_absolute_tolerance (double);
- void set_initial_step_size (double);
- void set_maximum_step_size (double);
- void set_minimum_step_size (double);
- void set_relative_tolerance (double);
-
- double absolute_tolerance (void);
- double initial_step_size (void);
- double maximum_step_size (void);
- double minimum_step_size (void);
- double relative_tolerance (void);
-
- private:
-
- double x_absolute_tolerance;
- double x_initial_step_size;
- double x_maximum_step_size;
- double x_minimum_step_size;
- double x_relative_tolerance;
- };
-
- class ODE : public ODEFunc, public ODE_options
- {
- public:
-
- ODE (void);
-
- ODE (int n);
-
- ODE (const ColumnVector& state, double time, const ODEFunc& f);
-
- virtual ~ODE (void);
-
- virtual int size (void) const;
- virtual ColumnVector state (void) const;
- virtual double time (void) const;
-
- virtual void force_restart (void);
- virtual void initialize (const ColumnVector& x, double t);
- virtual void set_stop_time (double t);
- virtual void clear_stop_time (void);
-
- virtual ColumnVector integrate (double t);
-
- void integrate (int nsteps, double tstep, ostream& s);
-
- Matrix integrate (const ColumnVector& tout);
- Matrix integrate (const ColumnVector& tout, const ColumnVector& tcrit);
-
- protected:
-
- /*
- * Some of this is probably too closely related to LSODE, but hey,
- * this is just a first attempt...
- */
-
- int n;
- double t;
- ColumnVector x;
-
- double stop_time;
- int stop_time_set;
-
- private:
-
- int integration_error;
- int restart;
- int method_flag;
- int *iwork;
- double *rwork;
- int istate;
- int itol;
- int itask;
- int iopt;
- int liw;
- int lrw;
-
- friend int lsode_f (int *neq, double *t, double *y, double *ydot);
-
- friend int lsode_j (int *neq, double *t, double *y, int *ml, int *mu,
- double *pd, int *nrowpd);
-
- };
-
- } // extern "C++"
-
- #endif
-
- /*
- ;;; Local Variables: ***
- ;;; mode: C++ ***
- ;;; page-delimiter: "^/\\*" ***
- ;;; End: ***
- */
-