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/*
Copyright (C) 1996, 1997 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
#if !defined (octave_ODE_h)
#define octave_ODE_h 1
#include "ODEFunc.h"
#include "base-de.h"
class
ODE : public base_diff_eqn, public ODEFunc
{
public:
ODE (void)
: base_diff_eqn (), ODEFunc () { }
ODE (const ColumnVector& s, double tm, const ODEFunc& f)
: base_diff_eqn (s, tm), ODEFunc (f) { }
ODE (const ODE& a)
: base_diff_eqn (a), ODEFunc (a) { }
ODE& operator = (const ODE& a)
{
if (this != &a)
{
base_diff_eqn::operator = (a);
ODEFunc::operator = (a);
}
return *this;
}
~ODE (void) { }
// Derived classes must provide functions to actually do the
// integration.
// Return the vector of states at output time t.
virtual ColumnVector do_integrate (double tt) = 0;
// Return a matrix of states at each output time specified by t.
// The rows of the result matrix should each correspond to a new
// output time.
virtual Matrix do_integrate (const ColumnVector& tt) = 0;
virtual Matrix do_integrate (const ColumnVector& tt,
const ColumnVector& ttcrit) = 0;
// Lots of ways to call the single function and optionally set and
// get additional information.
// Integrate to t from current point.
virtual ColumnVector integrate (double tt)
{ return do_integrate (tt); }
// Set new x0, t0 and integrate to t.
virtual ColumnVector integrate (const ColumnVector& x0, double t0, double tt)
{
initialize (x0, t0);
return do_integrate (tt);
}
// Integrate from current point and return output at all points
// specified by t.
virtual Matrix integrate (const ColumnVector& tt)
{ return do_integrate (tt); }
// Set new x0, t0 and integrate to return output at all points
// specified by t.
virtual Matrix integrate (const ColumnVector& x0, double t0,
const ColumnVector& tt)
{
initialize (x0, t0);
return do_integrate (tt);
}
// Integrate from current point and return output at all points
// specified by t.
virtual Matrix integrate (const ColumnVector& tt,
const ColumnVector& ttcrit)
{ return do_integrate (tt, ttcrit); }
// Set new x0, t0 and integrate to return output at all points
// specified by t.
virtual Matrix integrate (const ColumnVector& x0, double t0,
const ColumnVector& tt,
const ColumnVector& ttcrit)
{
initialize (x0, t0);
return do_integrate (tt, ttcrit);
}
};
#endif
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/
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