*
* Interface to GiNaC's symbolic exponentiation (basis^exponent). */
-#ifndef _POWER_H_
-#define _POWER_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_POWER_H__
+#define __GINAC_POWER_H__
+
+#include <ginac/basic.h>
+#include <ginac/ex.h>
+
+#ifndef NO_GINAC_NAMESPACE
+namespace GiNaC {
+#endif // ndef NO_GINAC_NAMESPACE
-class power;
class numeric;
class add;
extern const power some_power;
extern type_info const & typeid_power;
-#define ex_to_power(X) static_cast<power const &>(*(X).bp)
+// utility functions
+inline const power &ex_to_power(const ex &e)
+{
+ return static_cast<const power &>(*e.bp);
+}
// wrapper functions
inline ex sqrt(ex const & a)
{ return power(a,exHALF()); }
-#endif // ndef _POWER_H_
+#ifndef NO_GINAC_NAMESPACE
+} // namespace GiNaC
+#endif // ndef NO_GINAC_NAMESPACE
+#endif // ndef __GINAC_POWER_H__