X-Git-Url: https://ginac.de/ginac.git//ginac.git?a=blobdiff_plain;f=ginac%2Frelational.h;h=325ce45cc0b7ce5e58eb383b39ed98ba076bbdfa;hb=052d2da5b41ac82855d3578050125aa21caf1003;hp=3155c0a1cae00bf46cb10923c45e84d8c1b77808;hpb=9985e28882888663fd8e43e8c59728ddcad552d0;p=ginac.git

diff --git a/ginac/relational.h b/ginac/relational.h
index 3155c0a1..325ce45c 100644
--- a/ginac/relational.h
+++ b/ginac/relational.h
@@ -3,7 +3,7 @@
  *  Interface to relations between expressions. */
 
 /*
- *  GiNaC Copyright (C) 1999-2020 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2022 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;