Power with a real base and even exponent reports that it's non-negative

[ginac.git] / ginac / indexed.h

diff --git a/ginac/indexed.h b/ginac/indexed.h
index 82a45c3441b4e8390b5624e72e2ca49446bad780..768f7fe8e64631834485816c60acbd6ec14afa19 100644 (file)
--- a/ginac/indexed.h
+++ b/ginac/indexed.h
@@ -3,7 +3,7 @@
  *  Interface to GiNaC's indexed expressions. */
 
 /*
- *  GiNaC Copyright (C) 1999-2008 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2011 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
@@ -20,16 +20,15 @@
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#ifndef __GINAC_INDEXED_H__
-#define __GINAC_INDEXED_H__
-
-#include <map>
+#ifndef GINAC_INDEXED_H
+#define GINAC_INDEXED_H
 
 #include "exprseq.h"
 #include "wildcard.h"
 
-namespace GiNaC {
+#include <map>
 
+namespace GiNaC {
 
 class scalar_products;
 class symmetry;
@@ -151,6 +150,10 @@ public:
        ex imag_part() const;
        exvector get_free_indices() const;
 
+       /** Save (a.k.a. serialize) indexed object into archive. */
+       void archive(archive_node& n) const;
+       /** Read (a.k.a. deserialize) indexed object from archive. */
+       void read_archive(const archive_node& n, lst& syms);
 protected:
        ex derivative(const symbol & s) const;
        ex thiscontainer(const exvector & v) const;
@@ -198,6 +201,7 @@ protected:
 protected:
        ex symtree; /**< Index symmetry (tree of symmetry objects) */
 };
+GINAC_DECLARE_UNARCHIVER(indexed);
 
 
 class spmapkey {
@@ -281,4 +285,4 @@ ex expand_dummy_sum(const ex & e, bool subs_idx = false);
 
 } // namespace GiNaC
 
-#endif // ndef __GINAC_INDEXED_H__
+#endif // ndef GINAC_INDEXED_H