* Interface to GiNaC's symbolic objects. */
/*
- * GiNaC Copyright (C) 1999-2004 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2005 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
*
* 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __GINAC_SYMBOL_H__
{
GINAC_DECLARE_REGISTERED_CLASS(symbol, basic)
+ friend class realsymbol;
+
// types
/** Symbols as keys to expressions - only for ginsh. */
// other constructors
public:
- explicit symbol(const std::string & initname, unsigned domain = symbol_options::complex);
- symbol(const std::string & initname, const std::string & texname, unsigned domain = symbol_options::complex);
- symbol(const std::string & initname, unsigned rt, unsigned rtt, unsigned domain = symbol_options::complex);
- symbol(const std::string & initname, const std::string & texname, unsigned rt, unsigned rtt, unsigned domain = symbol_options::complex);
+ explicit symbol(const std::string & initname, unsigned domain = domain::complex);
+ symbol(const std::string & initname, const std::string & texname, unsigned domain = domain::complex);
+ symbol(const std::string & initname, unsigned rt, unsigned rtt, unsigned domain = domain::complex);
+ symbol(const std::string & initname, const std::string & texname, unsigned rt, unsigned rtt, unsigned domain = domain::complex);
// functions overriding virtual functions from base classes
public:
};
+/** Specialization of symbol to real domain */
+class realsymbol : public symbol
+{
+ // constructors
+public:
+ realsymbol();
+ explicit realsymbol(const std::string & initname, unsigned domain = domain::real);
+ realsymbol(const std::string & initname, const std::string & texname, unsigned domain = domain::real);
+ realsymbol(const std::string & initname, unsigned rt, unsigned rtt, unsigned domain = domain::real);
+ realsymbol(const std::string & initname, const std::string & texname, unsigned rt, unsigned rtt, unsigned domain = domain::real);
+};
+
+
// utility functions
/** Specialization of is_exactly_a<symbol>(obj) for symbol objects. */
template<> inline bool is_exactly_a<symbol>(const basic & obj)
{
- return obj.tinfo()==TINFO_symbol;
+ return obj.tinfo() == TINFO_symbol;
+}
+
+/** Specialization of is_exactly_a<realsymbol>(obj) for realsymbol objects. */
+template<> inline bool is_exactly_a<realsymbol>(const basic & obj)
+{
+ return (obj.tinfo() == TINFO_symbol) && (static_cast<const symbol &>(obj).get_domain() == domain::real);
}
// wrapper functions around member functions