3 * Implementation of GiNaC's clifford objects.
4 * No real implementation yet, to be done. */
7 * GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
32 #ifndef NO_NAMESPACE_GINAC
34 #endif // ndef NO_NAMESPACE_GINAC
36 GINAC_IMPLEMENT_REGISTERED_CLASS(clifford, lortensor)
39 // default constructor, destructor, copy constructor assignment operator and helpers
46 debugmsg("clifford default constructor",LOGLEVEL_CONSTRUCT);
47 tinfo_key = TINFO_clifford;
52 debugmsg("clifford destructor",LOGLEVEL_DESTRUCT);
56 clifford::clifford(const clifford & other)
58 debugmsg("clifford copy constructor",LOGLEVEL_CONSTRUCT);
62 const clifford & clifford::operator=(const clifford & other)
64 debugmsg("clifford operator=",LOGLEVEL_ASSIGNMENT);
74 void clifford::copy(const clifford & other)
76 inherited::copy(other);
79 void clifford::destroy(bool call_parent)
81 if (call_parent) inherited::destroy(call_parent);
90 clifford::clifford(const std::string & n, const ex & mu) : inherited(lortensor_symbolic, n, mu)
92 debugmsg("clifford constructor from string,ex",LOGLEVEL_CONSTRUCT);
93 tinfo_key=TINFO_clifford;
97 // functions overriding virtual functions from bases classes
102 basic * clifford::duplicate() const
104 debugmsg("clifford duplicate",LOGLEVEL_DUPLICATE);
105 return new clifford(*this);
108 void clifford::printraw(std::ostream & os) const
110 debugmsg("clifford printraw",LOGLEVEL_PRINT);
111 os << "clifford(" << "indices=";
113 os << ",hash=" << hashvalue << ",flags=" << flags << ")";
116 void clifford::printtree(std::ostream & os, unsigned indent) const
118 debugmsg("clifford printtree",LOGLEVEL_PRINT);
119 os << std::string(indent,' ') << " (clifford): "
120 << seq.size() << "indices=";
121 printtreeindices(os, indent);
122 os << ", hash=" << hashvalue
123 << " (0x" << std::hex << hashvalue << std::dec << ")"
124 << ", flags=" << flags << std::endl;
127 void clifford::print(std::ostream & os, unsigned upper_precedence) const
129 debugmsg("clifford print",LOGLEVEL_PRINT);
134 bool clifford::info(unsigned inf) const
136 return inherited::info(inf);
141 int clifford::compare_same_type(const basic & other) const
143 GINAC_ASSERT(is_of_type(other,clifford));
144 // only compare indices
145 return exprseq::compare_same_type(other);
148 bool clifford::is_equal_same_type(const basic & other) const
150 GINAC_ASSERT(is_of_type(other,clifford));
151 // only compare indices
152 return exprseq::is_equal_same_type(other);
155 ex clifford::simplify_ncmul(const exvector & v) const
157 return simplified_ncmul(v);
161 // virtual functions which can be overridden by derived classes
167 // non-virtual functions in this class
173 // static member variables
182 /** Construct an object representing a Dirac gamma matrix. The index must
183 * be of class lorentzidx.
186 * @return newly constructed object */
187 clifford clifford_gamma(const ex & mu)
189 return clifford("gamma", mu);
196 const clifford some_clifford;
197 const std::type_info & typeid_clifford = typeid(some_clifford);
199 #ifndef NO_NAMESPACE_GINAC
201 #endif // ndef NO_NAMESPACE_GINAC