/usr/include/octave-4.0.0/octave/DAEFunc.h is in liboctave-dev 4.0.0-3ubuntu9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright (C) 1993-2015 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_DAEFunc_h)
#define octave_DAEFunc_h 1
class Matrix;
class ColumnVector;
class
DAEFunc
{
public:
typedef ColumnVector (*DAERHSFunc) (const ColumnVector& x,
const ColumnVector& xdot,
double t, octave_idx_type& ires);
// This is really the form used by DASSL:
//
// PD = DG/DY + CJ * DG/DYPRIME
typedef Matrix (*DAEJacFunc) (const ColumnVector& x,
const ColumnVector& xdot,
double t, double cj);
DAEFunc (void)
: fun (0), jac (0), reset (true) { }
DAEFunc (DAERHSFunc f)
: fun (f), jac (0), reset (true) { }
DAEFunc (DAERHSFunc f, DAEJacFunc j)
: fun (f), jac (j), reset (true) { }
DAEFunc (const DAEFunc& a)
: fun (a.fun), jac (a.jac), reset (a.reset) { }
DAEFunc& operator = (const DAEFunc& a)
{
if (this != &a)
{
fun = a.fun;
jac = a.jac;
reset = a.reset;
}
return *this;
}
virtual ~DAEFunc (void) { }
DAERHSFunc function (void) const { return fun; }
DAEFunc& set_function (DAERHSFunc f)
{
fun = f;
reset = true;
return *this;
}
DAEJacFunc jacobian_function (void) const { return jac; }
DAEFunc& set_jacobian_function (DAEJacFunc j)
{
jac = j;
reset = true;
return *this;
}
protected:
DAERHSFunc fun;
DAEJacFunc jac;
// This variable is TRUE when this object is constructed, and also
// after any internal data has changed. Derived classes may use
// this information (and change it) to know when to (re)initialize
// their own internal data related to this object.
bool reset;
};
#endif
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