X-Git-Url: https://ginac.de/ginac.git/static/gitweb.css/ginac.git?a=blobdiff_plain;f=ginac%2Frelational.h;h=779b1fe871e46ef1b8985fa2c4a934627a5fa1f1;hb=c4c5bcaff965970d7632eeea9bb9cb31b99a9251;hp=fc559b5fafb4f297a885d0040f8fabc882af8a70;hpb=708e9e647029af699333fceffc0a76bef70a4709;p=ginac.git

diff --git a/ginac/relational.h b/ginac/relational.h
index fc559b5f..779b1fe8 100644
--- a/ginac/relational.h
+++ b/ginac/relational.h
@@ -3,7 +3,7 @@
  *  Interface to relations between expressions. */
 
 /*
- *  GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2002 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
@@ -49,7 +49,7 @@ public:
 public:
 	relational(const ex & lhs, const ex & rhs, operators oper=equal);
 	
-	// functions overriding virtual functions from bases classes
+	// functions overriding virtual functions from base classes
 public:
 	void print(const print_context & c, unsigned level = 0) const;
 	unsigned precedence(void) const {return 20;}
@@ -57,12 +57,14 @@ public:
 	unsigned nops() const;
 	ex & let_op(int i);
 	ex eval(int level=0) const;
+	ex subs(const lst & ls, const lst & lr, bool no_pattern = false) const;
 	ex simplify_ncmul(const exvector & v) const;
 
 protected:
 	bool match_same_type(const basic & other) const;
 	unsigned return_type(void) const;
 	unsigned return_type_tinfo(void) const;
+	unsigned calchash(void) const;
 
 	// new virtual functions which can be overridden by derived classes
 public:
@@ -83,13 +85,6 @@ protected:
 
 // utility functions
 
-/** Return the relational object handled by an ex.  Deprecated: use ex_to<relational>().
- *  This is unsafe: you need to check the type first. */
-inline const relational &ex_to_relational(const ex &e)
-{
-	return static_cast<const relational &>(*e.bp);
-}
-
 /** Specialization of is_exactly_a<relational>(obj) for relational objects. */
 template<> inline bool is_exactly_a<relational>(const basic & obj)
 {