#ifndef around namespace GiNaC { }

[ginac.git] / ginac / power.h

diff --git a/ginac/power.h b/ginac/power.h
index ed9c146762c2fd58062274df982cc06b2c65ad21..25f4f8d7d8a0e076a014903245cd9c10840f20c2 100644 (file)
--- a/ginac/power.h
+++ b/ginac/power.h
@@ -2,10 +2,34 @@
  *
  *  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;
 
@@ -83,7 +107,11 @@ protected:
 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
 
@@ -99,5 +127,8 @@ inline ex pow(ex const & b, ex const & e)
 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__