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+// NLEqn.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 (_NLEqn_h)
+#define _NLEqn_h 1
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+#include <NLFunc.h>
+#include "Matrix.h"
+
+#ifndef Vector
+#define Vector ColumnVector
+#endif
+
+class NLEqn : public NLFunc
+{
+ public:
+
+  NLEqn (void);
+  NLEqn (const Vector&, const NLFunc);
+
+  NLEqn (const NLEqn &);
+
+  NLEqn& operator = (const NLEqn& a);
+
+  void resize (int);
+
+  void set_states (const Vector&);
+
+  Vector states (void) const;
+
+  int size (void) const;
+
+  Vector solve (void);
+  Vector solve (const Vector&);
+
+  Vector solve (int& info);
+  Vector solve (const Vector&, int& info);
+
+ private:
+
+  int n;
+  Vector x;
+
+  void error (const char* msg);
+
+};
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; page-delimiter: "^/\\*" ***
+;;; End: ***
+*/