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/*
Copyright (C) 1993, 1994, 1995, 1996, 1997, 2002, 2004, 2005, 2006,
2007 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 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
<http://www.gnu.org/licenses/>.
*/
#if !defined (octave_NLEqn_h)
#define octave_NLEqn_h 1
#include <cfloat>
#include "NLEqn-opts.h"
#include "lo-ieee.h"
#include "lo-math.h"
class
OCTAVE_API
NLEqn : public NLFunc, public NLEqn_options
{
public:
NLEqn (void)
: NLFunc (), NLEqn_options (), x (), fval (),
solution_status (0) { }
NLEqn (const ColumnVector& xx, const NLFunc f)
: NLFunc (f), NLEqn_options (), x (xx), fval (x.numel (), octave_NaN),
solution_status (0) { }
NLEqn (const NLEqn& a)
: NLFunc (a.fun, a.jac), NLEqn_options (), x (a.x), fval (a.fval),
solution_status (a.solution_status) { }
NLEqn& operator = (const NLEqn& a)
{
if (this != &a)
{
NLFunc::operator = (a);
NLEqn_options::operator = (a);
x = a.x;
fval = a.fval;
solution_status = a.solution_status;
}
return *this;
}
~NLEqn (void) { }
void set_states (const ColumnVector& xx) { x = xx; }
ColumnVector states (void) const { return x; }
octave_idx_type size (void) const { return x.capacity (); }
ColumnVector solve (void)
{
octave_idx_type info;
return solve (info);
}
ColumnVector solve (const ColumnVector& xvec)
{
set_states (xvec);
octave_idx_type info;
return solve (info);
}
ColumnVector solve (const ColumnVector& xvec, octave_idx_type& info)
{
set_states (xvec);
return solve (info);
}
ColumnVector solve (octave_idx_type& info);
octave_idx_type solution_state (void) const { return solution_status; }
bool solution_ok (void) const { return solution_status == 1; }
ColumnVector function_value (void) const { return fval; }
std::string error_message (void) const;
private:
ColumnVector x;
ColumnVector fval;
octave_idx_type solution_status;
void error (const char* msg);
};
#endif
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/
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