* Interface to GiNaC's clifford algebra (Dirac gamma) objects. */
/*
- * GiNaC Copyright (C) 1999-2008 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2011 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef __GINAC_CLIFFORD_H__
-#define __GINAC_CLIFFORD_H__
+#ifndef GINAC_CLIFFORD_H
+#define GINAC_CLIFFORD_H
#include "indexed.h"
#include "tensor.h"
namespace GiNaC {
-
/** This class holds an object representing an element of the Clifford
* algebra (the Dirac gamma matrices). These objects only carry Lorentz
* indices. Spinor indices are hidden. A representation label (an unsigned
class clifford : public indexed
{
GINAC_DECLARE_REGISTERED_CLASS(clifford, indexed)
-public:
- static const tinfo_static_t return_type_tinfo_static[256];
-
// other constructors
public:
clifford(const ex & b, unsigned char rl = 0);
// functions overriding virtual functions from base classes
public:
unsigned precedence() const { return 65; }
+ void archive(archive_node& n) const;
+ void read_archive(const archive_node& n, lst& sym_lst);
protected:
ex eval_ncmul(const exvector & v) const;
bool match_same_type(const basic & other) const;
ex thiscontainer(const exvector & v) const;
ex thiscontainer(std::auto_ptr<exvector> vp) const;
unsigned return_type() const { return return_types::noncommutative; }
- tinfo_t return_type_tinfo() const { return clifford::return_type_tinfo_static+representation_label; }
-
+ return_type_t return_type_tinfo() const;
// non-virtual functions in this class
public:
unsigned char get_representation_label() const { return representation_label; }
ex metric; /**< Metric of the space, all constructors make it an indexed object */
int commutator_sign; /**< It is the sign in the definition e~i e~j +/- e~j e~i = B(i, j) + B(j, i)*/
};
+GINAC_DECLARE_UNARCHIVER(clifford);
/** This class represents the Clifford algebra unity element. */
class diracone : public tensor
void do_print(const print_context & c, unsigned level) const;
void do_print_latex(const print_latex & c, unsigned level) const;
};
+GINAC_DECLARE_UNARCHIVER(diracone);
/** This class represents the Clifford algebra generators (units). */
{
GINAC_DECLARE_REGISTERED_CLASS(cliffordunit, tensor)
- // other constructors
-protected:
- cliffordunit(tinfo_t ti) : inherited(ti) {}
-
// functions overriding virtual functions from base classes
public:
bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const;
void do_print(const print_context & c, unsigned level) const;
void do_print_latex(const print_latex & c, unsigned level) const;
};
+GINAC_DECLARE_UNARCHIVER(diracgamma);
/** This class represents the Dirac gamma5 object which anticommutates with
void do_print(const print_context & c, unsigned level) const;
void do_print_latex(const print_latex & c, unsigned level) const;
};
+GINAC_DECLARE_UNARCHIVER(diracgamma5);
/** This class represents the Dirac gammaL object which behaves like
void do_print(const print_context & c, unsigned level) const;
void do_print_latex(const print_latex & c, unsigned level) const;
};
+GINAC_DECLARE_UNARCHIVER(diracgammaL);
/** This class represents the Dirac gammaL object which behaves like
void do_print(const print_context & c, unsigned level) const;
void do_print_latex(const print_latex & c, unsigned level) const;
};
+GINAC_DECLARE_UNARCHIVER(diracgammaR);
// global functions
-/** Check whether a given tinfo key (as returned by return_type_tinfo()
+/** Check whether a given return_type_t object (as returned by return_type_tinfo()
* is that of a clifford object (with an arbitrary representation label).
*
* @param ti tinfo key */
-bool is_clifford_tinfo(tinfo_t ti);
+inline bool is_clifford_tinfo(const return_type_t& ti)
+{
+ return *(ti.tinfo) == typeid(clifford);
+}
/** Create a Clifford unity object.
*
*
* @param e Expression to be processed
* @ignore_ONE defines if clifford_ONE should be ignored in the search*/
-char clifford_max_label(const ex & e, bool ignore_ONE = false);
+int clifford_max_label(const ex & e, bool ignore_ONE = false);
/** Calculation of the norm in the Clifford algebra. */
ex clifford_norm(const ex & e);
} // namespace GiNaC
-#endif // ndef __GINAC_CLIFFORD_H__
+#endif // ndef GINAC_CLIFFORD_H