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+++ b/liboctave/DAERTFunc.h
@@ -0,0 +1,84 @@
+/*
+
+Copyright (C) 2002 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, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#if !defined (octave_DAERTFunc_h)
+#define octave_DAERTFunc_h 1
+
+#include "dMatrix.h"
+
+class
+DAERTFunc : DAEFunc
+{
+public:
+
+  typedef ColumnVector (*DAERTConstrFunc) (const ColumnVector& x, double t);
+
+  DAERTFunc (void)
+    : DAEFunc (), constr (0) { }
+
+  DAERTFunc (DAERHSFunc f)
+    : DAEFunc (f), constr (0) { }
+
+  DAERTFunc (DAERHSFunc f, DAEJacFunc j)
+    : DAEFunc (f, j), constr (0) { }
+
+  DAERTFunc (DAERHSFunc f, DAERTConstrFunc cf)
+    : DAEFunc (f), constr (cf) { }
+
+  DAERTFunc (DAERHSFunc f, DAERTConstrFunc cf, DAEJacFunc j)
+    : DAEFunc (f, j), constr (cf) { }
+
+  DAERTFunc (const DAERTFunc& a)
+    : DAEFunc (a), constr (a.constr) { }
+
+  DAERTFunc& operator = (const DAERTFunc& a)
+    {
+      if (this != &a)
+	{
+	  DAEFunc::operator = (a);
+	  constr = a.constr;
+	}
+      return *this;
+    }
+
+  ~DAERTFunc (void) { }
+
+  DAERTConstrFunc constraint_function (void) const { return constr; }
+
+  DAERTFunc& set_constraint_function (DAERTConstrFunc cf)
+    {
+      constr = cf;
+      return *this;
+    }
+
+protected:
+
+  DAERTConstrFunc constr;
+};
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/