* Interface to relations between expressions. */
/*
- * GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2000 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
* relation between them. */
class relational : public basic
{
+ GINAC_DECLARE_REGISTERED_CLASS(relational, basic)
// types
public:
void printraw(ostream & os) const;
void printcsrc(ostream & os, unsigned type, unsigned upper_precedence=0) const;
bool info(unsigned inf) const;
- int nops() const;
+ unsigned nops() const;
ex & let_op(int const i);
ex eval(int level=0) const;
ex evalf(int level=0) const;