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////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002-2025 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.
//
// 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
// <https://www.gnu.org/licenses/>.
//
////////////////////////////////////////////////////////////////////////
#if ! defined (octave_DASRT_h)
#define octave_DASRT_h 1
#include "octave-config.h"
#include <string>
#include "Array.h"
#include "DASRT-opts.h"
#include "dMatrix.h"
class DASRT_result
{
public:
DASRT_result ()
: m_x (), m_xdot (), m_t () { }
DASRT_result (const Matrix& x, const Matrix& xdot, const ColumnVector& t)
: m_x (x), m_xdot (xdot), m_t (t) { }
DASRT_result (const DASRT_result& r)
: m_x (r.m_x), m_xdot (r.m_xdot), m_t (r.m_t) { }
DASRT_result& operator = (const DASRT_result& r)
{
if (this != &r)
{
m_x = r.m_x;
m_xdot = r.m_xdot;
m_t = r.m_t;
}
return *this;
}
~DASRT_result () = default;
Matrix state () const { return m_x; }
Matrix deriv () const { return m_xdot; }
ColumnVector times () const { return m_t; }
private:
Matrix m_x;
Matrix m_xdot;
ColumnVector m_t;
};
class OCTAVE_API DASRT : public DAERT, public DASRT_options
{
public:
DASRT ()
: DAERT (), DASRT_options (), m_initialized (false),
m_liw (0), m_lrw (0), m_ng (0), m_info (), m_iwork (), m_jroot (),
m_rwork (), m_abs_tol (), m_rel_tol ()
{ }
DASRT (const ColumnVector& s, double tm, DAERTFunc& f)
: DAERT (s, tm, f), DASRT_options (), m_initialized (false),
m_liw (0), m_lrw (0), m_ng (0), m_info (), m_iwork (), m_jroot (),
m_rwork (), m_abs_tol (), m_rel_tol ()
{ }
DASRT (const ColumnVector& s, const ColumnVector& deriv,
double tm, DAERTFunc& f)
: DAERT (s, deriv, tm, f), DASRT_options (), m_initialized (false),
m_liw (0), m_lrw (0), m_ng (0), m_info (), m_iwork (), m_jroot (),
m_rwork (), m_abs_tol (), m_rel_tol ()
{ }
OCTAVE_DEFAULT_COPY_MOVE_DELETE (DASRT)
DASRT_result integrate (const ColumnVector& tout);
DASRT_result integrate (const ColumnVector& tout,
const ColumnVector& tcrit);
std::string error_message () const;
private:
bool m_initialized;
octave_f77_int_type m_liw;
octave_f77_int_type m_lrw;
octave_f77_int_type m_ng;
Array<octave_f77_int_type> m_info;
Array<octave_f77_int_type> m_iwork;
Array<octave_f77_int_type> m_jroot;
Array<double> m_rwork;
Array<double> m_abs_tol;
Array<double> m_rel_tol;
void integrate (double t);
};
#endif
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