Add method relational::canonical().

[ginac.git] / ginac / relational.h

diff --git a/ginac/relational.h b/ginac/relational.h
index ac6caecfd801425de214b380f8a7df0c8fff2a9c..a9b072a78068e368c71dad4b5815b5f78f294b46 100644 (file)
--- a/ginac/relational.h
+++ b/ginac/relational.h
@@ -3,7 +3,7 @@
  *  Interface to relations between expressions. */
 
 /*
- *  GiNaC Copyright (C) 1999-2019 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2021 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
@@ -63,6 +63,8 @@ public:
        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;
+       ex canonical() const;
+
 protected:
        ex eval_ncmul(const exvector & v) const override;
        bool match_same_type(const basic & other) const override;