X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fclifford.h;h=d77707964f1d1d9f9dfb0d637f37fd48bbf705e9;hp=50a0c70cdaa64b96fb68d7322b5b641c39a0a9ea;hb=d54e497297f4687c385ff8fbc91296365887c7c0;hpb=834bacb25c9427fb03b8f9b34605738fb59202e1

diff --git a/ginac/clifford.h b/ginac/clifford.h
index 50a0c70c..d7770796 100644
--- a/ginac/clifford.h
+++ b/ginac/clifford.h
@@ -3,7 +3,7 @@
  *  Interface to GiNaC's clifford algebra (Dirac gamma) objects. */
 
 /*
- *  GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2003 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
@@ -45,23 +45,24 @@ public:
 
 	// internal constructors
 	clifford(unsigned char rl, const exvector & v, bool discardable = false);
-	clifford(unsigned char rl, exvector * vp); // vp will be deleted
+	clifford(unsigned char rl, std::auto_ptr<exvector> vp);
 
 	// functions overriding virtual functions from base classes
-public:
-	void print(const print_context & c, unsigned level = 0) const;
-
 protected:
+	ex eval_ncmul(const exvector & v) const;
 	bool match_same_type(const basic & other) const;
-	ex simplify_ncmul(const exvector & v) const;
-	ex thisexprseq(const exvector & v) const;
-	ex thisexprseq(exvector * vp) const;
-	unsigned return_type(void) const { return return_types::noncommutative; }
-	unsigned return_type_tinfo(void) const { return TINFO_clifford + representation_label; }
+	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_clifford + representation_label; }
 
 	// non-virtual functions in this class
 public:
-	unsigned char get_representation_label(void) const {return representation_label;}
+	unsigned char get_representation_label() const {return representation_label;}
+
+protected:
+	void do_print_dflt(const print_dflt & c, unsigned level) const;
+	void do_print_latex(const print_latex & c, unsigned level) const;
 
 	// member variables
 private:
@@ -74,9 +75,10 @@ class diracone : public tensor
 {
 	GINAC_DECLARE_REGISTERED_CLASS(diracone, tensor)
 
-	// functions overriding virtual functions from base classes
-public:
-	void print(const print_context & c, unsigned level = 0) const;
+	// non-virtual functions in this class
+protected:
+	void do_print(const print_context & c, unsigned level) const;
+	void do_print_latex(const print_latex & c, unsigned level) const;
 };
 
 
@@ -87,8 +89,12 @@ class diracgamma : public tensor
 
 	// functions overriding virtual functions from base classes
 public:
-	void print(const print_context & c, unsigned level = 0) const;
 	bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const;
+
+	// non-virtual functions in this class
+protected:
+	void do_print(const print_context & c, unsigned level) const;
+	void do_print_latex(const print_latex & c, unsigned level) const;
 };
 
 
@@ -98,20 +104,40 @@ class diracgamma5 : public tensor
 {
 	GINAC_DECLARE_REGISTERED_CLASS(diracgamma5, tensor)
 
-	// functions overriding virtual functions from base classes
-public:
-	void print(const print_context & c, unsigned level = 0) const;
+	// non-virtual functions in this class
+protected:
+	void do_print(const print_context & c, unsigned level) const;
+	void do_print_latex(const print_latex & c, unsigned level) const;
 };
 
 
-// global functions
+/** This class represents the Dirac gammaL object which behaves like
+ *  1/2 (1-gamma5). */
+class diracgammaL : public tensor
+{
+	GINAC_DECLARE_REGISTERED_CLASS(diracgammaL, tensor)
+
+	// non-virtual functions in this class
+protected:
+	void do_print(const print_context & c, unsigned level) const;
+	void do_print_latex(const print_latex & c, unsigned level) const;
+};
 
-/** Return the clifford object handled by an ex.  Deprecated: use ex_to<clifford>().
- *  This is unsafe: you need to check the type first. */
-inline const clifford &ex_to_clifford(const ex &e)
+
+/** This class represents the Dirac gammaL object which behaves like
+ *  1/2 (1+gamma5). */
+class diracgammaR : public tensor
 {
-	return static_cast<const clifford &>(*e.bp);
-}
+	GINAC_DECLARE_REGISTERED_CLASS(diracgammaR, tensor)
+
+	// non-virtual functions in this class
+protected:
+	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<clifford>(obj) for clifford objects. */
 template<> inline bool is_exactly_a<clifford>(const basic & obj)
@@ -138,14 +164,21 @@ ex dirac_gamma(const ex & mu, unsigned char rl = 0);
  *  @return newly constructed object */
 ex dirac_gamma5(unsigned char rl = 0);
 
-/** This returns (dirac_ONE(rl) + dirac_gamma5(rl)). */
-ex dirac_gamma6(unsigned char rl = 0);
+/** Create a Dirac gammaL object.
+ *
+ *  @param rl Representation label
+ *  @return newly constructed object */
+ex dirac_gammaL(unsigned char rl = 0);
 
-/** This returns (dirac_ONE(rl) - dirac_gamma5(rl)). */
-ex dirac_gamma7(unsigned char rl = 0);
+/** Create a Dirac gammaR object.
+ *
+ *  @param rl Representation label
+ *  @return newly constructed object */
+ex dirac_gammaR(unsigned char rl = 0);
 
 /** Create a term of the form e_mu * gamma~mu with a unique index mu.
  *
+ *  @param e Original expression
  *  @param dim Dimension of index
  *  @param rl Representation label */
 ex dirac_slash(const ex & e, const ex & dim, unsigned char rl = 0);