*
* Interface to relations between expressions. */
-#ifndef _RELATIONAL_H_
-#define _RELATIONAL_H_
+/*
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
-class relational;
+#ifndef __GINAC_RELATIONAL_H__
+#define __GINAC_RELATIONAL_H__
#include "basic.h"
+#include "ex.h"
+
+#ifndef NO_NAMESPACE_GINAC
+namespace GiNaC {
+#endif // ndef NO_NAMESPACE_GINAC
/** This class holds a relation consisting of two expressions and a logical
* relation between them. */
class relational : public basic
{
+ GINAC_DECLARE_REGISTERED_CLASS(relational, basic)
// types
public:
public:
relational();
~relational();
- relational(relational const & other);
- relational const & operator=(relational const & other);
+ relational(const relational & other);
+ const relational & operator=(const relational & other);
protected:
- void copy(relational const & other);
+ void copy(const relational & other);
void destroy(bool call_parent);
// other constructors
public:
- relational(ex const & lhs, ex const & rhs, operators oper=equal);
+ relational(const ex & lhs, const ex & rhs, operators oper=equal);
// functions overriding virtual functions from bases classes
public:
basic * duplicate() const;
- void printraw(ostream & os) const;
void print(ostream & os, unsigned upper_precedence=0) const;
+ void printraw(ostream & os) const;
void printcsrc(ostream & os, unsigned type, unsigned upper_precedence=0) const;
bool info(unsigned inf) const;
- int nops() const;
- ex & let_op(int const i);
+ unsigned nops() const;
+ ex & let_op(int i);
ex eval(int level=0) const;
ex evalf(int level=0) const;
- ex simplify_ncmul(exvector const & v) const;
+ ex simplify_ncmul(const exvector & v) const;
protected:
- int compare_same_type(basic const & other) const;
+ int compare_same_type(const basic & other) const;
unsigned return_type(void) const;
unsigned return_type_tinfo(void) const;
// new virtual functions which can be overridden by derived classes
- // none
+public:
+ virtual ex lhs(void) const;
+ virtual ex rhs(void) const;
// non-virtual functions in this class
public:
// global constants
extern const relational some_relational;
-extern type_info const & typeid_relational;
+extern const type_info & typeid_relational;
-#define ex_to_relational(X) static_cast<relational const &>(*(X).bp)
-
-#endif // ndef _RELATIONAL_H_
+// utility functions
+inline const relational &ex_to_relational(const ex &e)
+{
+ return static_cast<const relational &>(*e.bp);
+}
+#ifndef NO_NAMESPACE_GINAC
+} // namespace GiNaC
+#endif // ndef NO_NAMESPACE_GINAC
+#endif // ndef __GINAC_RELATIONAL_H__