X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fsymmetry.h;h=4f921fdf8f686955de22409500cce043f99a9094;hp=fa897be9572de5d6704ed685d8df6ad2eb5c47c9;hb=8cffcdf13d817a47f217f1a1043317d95969e070;hpb=56bbb99adc43dad22ee615380d4446a87b713cb8

diff --git a/ginac/symmetry.h b/ginac/symmetry.h
index fa897be9..4f921fdf 100644
--- a/ginac/symmetry.h
+++ b/ginac/symmetry.h
@@ -3,7 +3,7 @@
  *  Interface to GiNaC's symmetry definitions. */
 
 /*
- *  GiNaC Copyright (C) 1999-2011 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2019 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
@@ -61,6 +61,15 @@ public:
 	/** Create node with two children. */
 	symmetry(symmetry_type t, const symmetry &c1, const symmetry &c2);
 
+	// functions overriding virtual functions from base classes
+public:
+	/** Save (a.k.a. serialize) object into archive. */
+	void archive(archive_node& n) const override;
+	/** Read (a.k.a. deserialize) object from archive. */
+	void read_archive(const archive_node& n, lst& syms) override;
+protected:
+	unsigned calchash() const override;
+
 	// non-virtual functions in this class
 public:
 	/** Get symmetry type. */
@@ -84,15 +93,9 @@ public:
 	bool has_nonsymmetric() const;
 	/** Check whether this node involves a cyclic symmetry. */
 	bool has_cyclic() const;
-
-	/** Save (a.k.a. serialize) object into archive. */
-	void archive(archive_node& n) const;
-	/** Read (a.k.a. deserialize) object from archive. */
-	void read_archive(const archive_node& n, lst& syms);
 protected:
 	void do_print(const print_context & c, unsigned level) const;
 	void do_print_tree(const print_tree & c, unsigned level) const;
-	unsigned calchash() const;
 
 	// member variables
 private:
@@ -167,7 +170,7 @@ inline ex antisymmetrize(const ex & e, const exvector & v)
 	return antisymmetrize(e, v.begin(), v.end());
 }
 
-/** Symmetrize expression by cyclic permuation over a set of objects
+/** Symmetrize expression by cyclic permutation over a set of objects
  *  (symbols, indices). */
 ex symmetrize_cyclic(const ex & e, exvector::const_iterator first, exvector::const_iterator last);