*
* Interface to GiNaC's overloaded operators. */
-#ifndef _OPERATORS_H_
-#define _OPERATORS_H_
+/*
+ * GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ *
+ * This program 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 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __GINAC_OPERATORS_H__
+#define __GINAC_OPERATORS_H__
#include <iostream>
-#include "basic.h"
-#include "ex.h"
-#include "numeric.h"
-#include "relational.h"
+namespace GiNaC {
+
+class ex;
+class numeric;
+class relational;
// binary arithmetic operators ex with ex
ex operator+(ex const & lh, ex const & rh);
ostream & operator<<(ostream & os, ex const & e);
istream & operator>>(istream & is, ex & e);
-#endif // ndef _OPERATORS_H_
+} // namespace GiNaC
+#endif // ndef __GINAC_OPERATORS_H__