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+// DAEFunc.h                                             -*- C++ -*-
+/*
+
+Copyright (C) 1992, 1993 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 (_DAEFunc_h)
+#define _DAEFunc_h 1
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+#include <iostream.h>
+#include "Matrix.h"
+
+#ifndef Vector
+#define Vector ColumnVector
+#endif
+
+#ifndef _DAEFunc_typedefs
+#define _DAEFunc_typedefs 1
+
+typedef struct DAEJac
+{
+  Matrix *dfdxdot;
+  Matrix *dfdx;
+};
+
+typedef Vector (*DAERHSFunc) (const Vector& x, const Vector& xdot, double);
+typedef DAEJac (*DAEJacFunc) (const Vector& x, const Vector& xdot, double);
+
+#endif
+
+class DAEFunc
+{
+public:
+
+  DAEFunc (void);
+  DAEFunc (DAERHSFunc f);
+  DAEFunc (DAERHSFunc f, DAEJacFunc j);
+
+  DAEFunc (const DAEFunc& a);
+
+  DAEFunc& operator = (const DAEFunc& a);
+
+  DAERHSFunc function (void) const;
+
+  DAEFunc& set_function (DAERHSFunc f);
+
+  DAEJacFunc jacobian_function (void) const;
+
+  DAEFunc& set_jacobian_function (DAEJacFunc f);
+
+protected:
+
+  DAERHSFunc fun;
+
+  DAEJacFunc jac;
+};
+
+#endif