* Interface to GiNaC's color (SU(3) Lie algebra) objects. */
/*
- * GiNaC Copyright (C) 1999-2004 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2008 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_COLOR_H__
#include "indexed.h"
#include "tensor.h"
+#include <set>
+
namespace GiNaC {
class color : public indexed
{
GINAC_DECLARE_REGISTERED_CLASS(color, indexed)
+public:
+ static const tinfo_static_t return_type_tinfo_static[256];
// other constructors
public:
ex thiscontainer(const exvector & v) const;
ex thiscontainer(std::auto_ptr<exvector> vp) const;
unsigned return_type() const { return return_types::noncommutative; }
- unsigned return_type_tinfo() const { return TINFO_color + representation_label; }
+ tinfo_t return_type_tinfo() const { return color::return_type_tinfo_static+representation_label; }
// non-virtual functions in this class
public:
// non-virtual functions in this class
protected:
+ unsigned return_type() const { return return_types::commutative; }
void do_print(const print_context & c, unsigned level) const;
void do_print_latex(const print_latex & c, unsigned level) const;
};
// non-virtual functions in this class
protected:
+ unsigned return_type() const { return return_types::commutative; }
void do_print(const print_context & c, unsigned level) const;
void do_print_latex(const print_latex & c, unsigned level) const;
};
// global functions
-/** Specialization of is_exactly_a<color>(obj) for color objects. */
-template<> inline bool is_exactly_a<color>(const basic & obj)
-{
- return obj.tinfo()==TINFO_color;
-}
-
/** Create the su(3) unity element. This is an indexed object, although it
* has no indices.
*
/** This returns the linear combination d.a.b.c+I*f.a.b.c. */
ex color_h(const ex & a, const ex & b, const ex & c);
+/** Calculate color traces over the specified set of representation labels.
+ *
+ * @param e Expression to take the trace of
+ * @param rls Set of representation labels */
+ex color_trace(const ex & e, const std::set<unsigned char> & rls);
+
+/** Calculate color traces over the specified list of representation labels.
+ *
+ * @param e Expression to take the trace of
+ * @param rll List of representation labels */
+ex color_trace(const ex & e, const lst & rll);
+
/** Calculate the trace of an expression containing color objects with a
* specified representation label.
*