* 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
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;}
unsigned nops() const;
ex & let_op(int i);
ex eval(int level=0) const;
- ex evalf(int level=0) const;
- ex normal(lst &sym_lst, lst &repl_lst, 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:
// utility functions
-/** Return the relational object handled by an ex.
- * 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)
{