#define __GINAC_CLIFFORD_H__
#include <string>
-#include "indexed.h"
-#include "ex.h"
+#include "lortensor.h"
-#ifndef NO_NAMESPACE_GINAC
namespace GiNaC {
-#endif // ndef NO_NAMESPACE_GINAC
-/** Base class for clifford object */
-class clifford : public indexed
+
+/** 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 always hidden in our implementation. */
+class clifford : public lortensor
{
-// member functions
+ GINAC_DECLARE_REGISTERED_CLASS(clifford, lortensor)
- // default constructor, destructor, copy constructor assignment operator and helpers
-public:
- clifford();
- ~clifford();
- clifford(const clifford & other);
- const clifford & operator=(const clifford & other);
-protected:
- void copy(const clifford & other);
- void destroy(bool call_parent);
+// friends
+
+ friend clifford clifford_gamma(const ex & mu);
// other constructors
public:
- explicit clifford(const std::string & initname);
+ clifford(const std::string & n, const ex & mu);
+ clifford(const std::string & n, const exvector & iv);
+ clifford(const std::string & n, exvector * ivp);
// functions overriding virtual functions from base classes
public:
- basic * duplicate() const;
void printraw(std::ostream & os) const;
void printtree(std::ostream & os, unsigned indent) const;
void print(std::ostream & os, unsigned upper_precedence=0) const;
- void printcsrc(std::ostream & os, unsigned type, unsigned upper_precedence=0) const;
bool info(unsigned inf) const;
+ // ex eval(int level=0) const;
protected:
- int compare_same_type(const basic & other) const;
+ bool is_equal_same_type(const basic & other) const;
ex simplify_ncmul(const exvector & v) const;
- unsigned calchash(void) const;
+ ex thisexprseq(const exvector & v) const;
+ ex thisexprseq(exvector * vp) const;
// new virtual functions which can be overridden by derived classes
// none
// non-virtual functions in this class
-public:
- void setname(const std::string & n);
-private:
- std::string & autoname_prefix(void);
-
-// member variables
+ // none
-protected:
- std::string name;
- unsigned serial; // unique serial number for comparision
-private:
- static unsigned next_serial;
+ // member variables
+ // none
};
-// global constants
-
-extern const clifford some_clifford;
-extern const std::type_info & typeid_clifford;
-
-// utility functions
+// global functions
inline const clifford &ex_to_clifford(const ex &e)
{
return static_cast<const clifford &>(*e.bp);
}
-#ifndef NO_NAMESPACE_GINAC
+clifford clifford_gamma(const ex & mu);
+
} // namespace GiNaC
-#endif // ndef NO_NAMESPACE_GINAC
#endif // ndef __GINAC_CLIFFORD_H__