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ODE.h
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C/C++ Source or Header
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1996-10-12
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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: ***
*/