X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fclifford.h;h=3e2678f38222ff783d45af6f5e9e9054427cb69d;hp=62aabce91b1e6333fc268778cbeb1e7fa70ae3ef;hb=08c190937df7e802393b588d3cc82d2bdf00b128;hpb=67467d256b44f5e08498ca81c946d9ffaa25d1e2 diff --git a/ginac/clifford.h b/ginac/clifford.h index 62aabce9..3e2678f3 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) 1999-2008 Johannes Gutenberg University Mainz, Germany + * GiNaC Copyright (C) 1999-2020 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 @@ -20,8 +20,8 @@ * 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" @@ -32,7 +32,6 @@ 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 @@ -41,29 +40,27 @@ namespace GiNaC { 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); clifford(const ex & b, const ex & mu, const ex & metr, unsigned char rl = 0, int comm_sign = -1); // internal constructors - clifford(unsigned char rl, const ex & metr, int comm_sign, const exvector & v, bool discardable = false); - clifford(unsigned char rl, const ex & metr, int comm_sign, std::auto_ptr vp); + clifford(unsigned char rl, const ex & metr, int comm_sign, const exvector & v); + clifford(unsigned char rl, const ex & metr, int comm_sign, exvector && v); // functions overriding virtual functions from base classes public: - unsigned precedence() const { return 65; } + unsigned precedence() const override { return 65; } + void archive(archive_node& n) const override; + void read_archive(const archive_node& n, lst& sym_lst) override; 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 vp) const; - unsigned return_type() const { return return_types::noncommutative; } - tinfo_t return_type_tinfo() const { return clifford::return_type_tinfo_static+representation_label; } - + ex eval_ncmul(const exvector & v) const override; + bool match_same_type(const basic & other) const override; + ex thiscontainer(const exvector & v) const override; + ex thiscontainer(exvector && v) const override; + unsigned return_type() const override { return return_types::noncommutative; } + return_type_t return_type_tinfo() const override; // non-virtual functions in this class public: unsigned char get_representation_label() const { return representation_label; } @@ -72,14 +69,15 @@ public: bool same_metric(const ex & other) const; int get_commutator_sign() const { return commutator_sign; } //**< See the member variable commutator_sign */ - inline size_t nops() const {return inherited::nops() + 1; } - ex op(size_t i) const; - ex & let_op(size_t i); - ex subs(const exmap & m, unsigned options = 0) const; + inline size_t nops() const override {return inherited::nops() + 1; } + ex op(size_t i) const override; + ex & let_op(size_t i) override; + ex subs(const exmap & m, unsigned options = 0) const override; protected: void do_print_dflt(const print_dflt & c, unsigned level) const; void do_print_latex(const print_latex & c, unsigned level) const; + void do_print_tree(const print_tree & c, unsigned level) const; // member variables protected: @@ -87,6 +85,7 @@ protected: 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 @@ -98,6 +97,7 @@ protected: 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). */ @@ -105,19 +105,16 @@ class cliffordunit : public tensor { 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; + bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const override; // 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; }; +GINAC_DECLARE_UNARCHIVER(cliffordunit); /** This class represents the Dirac gamma Lorentz vector. */ @@ -127,13 +124,14 @@ class diracgamma : public cliffordunit // functions overriding virtual functions from base classes public: - bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const; + bool contract_with(exvector::iterator self, exvector::iterator other, exvector & v) const override; // 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; }; +GINAC_DECLARE_UNARCHIVER(diracgamma); /** This class represents the Dirac gamma5 object which anticommutates with @@ -143,13 +141,14 @@ class diracgamma5 : public tensor GINAC_DECLARE_REGISTERED_CLASS(diracgamma5, tensor) // functions overriding virtual functions from base classes - ex conjugate() const; + ex conjugate() const override; // 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; }; +GINAC_DECLARE_UNARCHIVER(diracgamma5); /** This class represents the Dirac gammaL object which behaves like @@ -159,13 +158,14 @@ class diracgammaL : public tensor GINAC_DECLARE_REGISTERED_CLASS(diracgammaL, tensor) // functions overriding virtual functions from base classes - ex conjugate() const; + ex conjugate() const override; // 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; }; +GINAC_DECLARE_UNARCHIVER(diracgammaL); /** This class represents the Dirac gammaL object which behaves like @@ -175,22 +175,26 @@ class diracgammaR : public tensor GINAC_DECLARE_REGISTERED_CLASS(diracgammaR, tensor) // functions overriding virtual functions from base classes - ex conjugate() const; + ex conjugate() const override; // 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; }; +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. * @@ -278,12 +282,16 @@ ex canonicalize_clifford(const ex & e); * clifford units. */ ex clifford_prime(const ex & e); +/** An auxillary function performing clifford_star() and clifford_bar().*/ +ex clifford_star_bar(const ex & e, bool do_bar, unsigned options); + /** Main anti-automorphism of the Clifford algebra: makes reversion * and changes signs of all clifford units. */ -inline ex clifford_bar(const ex & e) { return clifford_prime(e.conjugate()); } +inline ex clifford_bar(const ex & e) { return clifford_star_bar(e, true, 0); } -/** Reversion of the Clifford algebra, coincides with the conjugate(). */ -inline ex clifford_star(const ex & e) { return e.conjugate(); } +/** Reversion of the Clifford algebra, reverse the order of all clifford units + * in ncmul. */ +inline ex clifford_star(const ex & e) { return clifford_star_bar(e, false, 0); } /** Replaces dirac_ONE's (with a representation_label no less than rl) in e with 1. * For the default value rl = 0 remove all of them. Aborts if e contains any @@ -299,7 +307,7 @@ ex remove_dirac_ONE(const ex & e, unsigned char rl = 0, unsigned options = 0); * * @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); @@ -358,4 +366,4 @@ ex clifford_moebius_map(const ex & M, const ex & v, const ex & G, unsigned char } // namespace GiNaC -#endif // ndef __GINAC_CLIFFORD_H__ +#endif // ndef GINAC_CLIFFORD_H