/** @file relational.h
*
- * Interface to relations between expressions. */
-
-#ifndef _RELATIONAL_H_
-#define _RELATIONAL_H_
-
-class relational;
+ * Interface to relations between expressions.
+ *
+ * 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
+ */
-#include "basic.h"
+#ifndef __GINAC_RELATIONAL_H__
+#define __GINAC_RELATIONAL_H__
/** This class holds a relation consisting of two expressions and a logical
* relation between them. */
#define ex_to_relational(X) static_cast<relational const &>(*(X).bp)
-#endif // ndef _RELATIONAL_H_
+#endif // ndef __GINAC_RELATIONAL_H__