X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fncmul.h;h=03b47ca7ae119c9337a31045f0c509469265ba7b;hp=1b833b0b638847852a03e0e236b6e1c1d487cbc2;hb=8bcccf834ad41e94a1a4f3a0304c2945b228b4f4;hpb=6b3768e8c544739ae53321539cb4d1e3112ded1b

diff --git a/ginac/ncmul.h b/ginac/ncmul.h
index 1b833b0b..03b47ca7 100644
--- a/ginac/ncmul.h
+++ b/ginac/ncmul.h
@@ -2,12 +2,30 @@
  *
  *  Interface to GiNaC's non-commutative products of expressions. */
 
-#ifndef _NCMUL_H_
-#define _NCMUL_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
+ */
 
-#include "exprseq.h"
+#ifndef __GINAC_NCMUL_H__
+#define __GINAC_NCMUL_H__
 
-class ncmul;
+#include <ginac/exprseq.h>
+
+namespace GiNaC {
 
 /** Non-commutative product of expressions. */
 class ncmul : public exprseq
@@ -90,7 +108,12 @@ extern type_info const & typeid_ncmul;
 ex nonsimplified_ncmul(exvector const & v);
 ex simplified_ncmul(exvector const & v);
 
-#define ex_to_ncmul(X) static_cast<ncmul const &>(*(X).bp)
+// utility functions
+inline const ncmul &ex_to_ncmul(const ex &e)
+{
+	return static_cast <const ncmul &>(*e.bp);
+}
 
-#endif // ndef _NCMUL_H_
+} // namespace GiNaC
 
+#endif // ndef __GINAC_NCMUL_H__