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
35 GINAC_IMPLEMENT_REGISTERED_CLASS(clifford, lortensor)
38 // default constructor, destructor, copy constructor assignment operator and helpers
45 debugmsg("clifford default constructor",LOGLEVEL_CONSTRUCT);
46 tinfo_key = TINFO_clifford;
51 void clifford::copy(const clifford & other)
53 inherited::copy(other);
56 void clifford::destroy(bool call_parent)
58 if (call_parent) inherited::destroy(call_parent);
67 clifford::clifford(const std::string & n, const ex & mu) : inherited(lortensor_symbolic, n, mu)
69 debugmsg("clifford constructor from string,ex",LOGLEVEL_CONSTRUCT);
70 tinfo_key=TINFO_clifford;
73 clifford::clifford(const std::string & n, const exvector & iv) : inherited(lortensor_symbolic, n, iv)
75 debugmsg("clifford constructor from string,exvector", LOGLEVEL_CONSTRUCT);
76 GINAC_ASSERT(all_of_type_lorentzidx());
77 tinfo_key=TINFO_clifford;
80 clifford::clifford(const std::string & n, exvector *ivp) : inherited(lortensor_symbolic, n, *ivp)
82 debugmsg("clifford constructor from string,exvector", LOGLEVEL_CONSTRUCT);
83 GINAC_ASSERT(all_of_type_lorentzidx());
84 tinfo_key=TINFO_clifford;
91 /** Construct object from archive_node. */
92 clifford::clifford(const archive_node &n, const lst &sym_lst) : inherited(n, sym_lst)
94 debugmsg("clifford constructor from archive_node", LOGLEVEL_CONSTRUCT);
97 /** Unarchive the object. */
98 ex clifford::unarchive(const archive_node &n, const lst &sym_lst)
100 return (new clifford(n, sym_lst))->setflag(status_flags::dynallocated);
103 /** Archive the object. */
104 void clifford::archive(archive_node &n) const
106 inherited::archive(n);
110 // functions overriding virtual functions from bases classes
115 void clifford::printraw(std::ostream & os) const
117 debugmsg("clifford printraw",LOGLEVEL_PRINT);
118 os << "clifford(" << "indices=";
120 os << ",hash=" << hashvalue << ",flags=" << flags << ")";
123 void clifford::printtree(std::ostream & os, unsigned indent) const
125 debugmsg("clifford printtree",LOGLEVEL_PRINT);
126 os << std::string(indent,' ') << " (clifford): "
127 << seq.size() << "indices=";
128 printtreeindices(os, indent);
129 os << ", hash=" << hashvalue
130 << " (0x" << std::hex << hashvalue << std::dec << ")"
131 << ", flags=" << flags << std::endl;
134 void clifford::print(std::ostream & os, unsigned upper_precedence) const
136 debugmsg("clifford print",LOGLEVEL_PRINT);
141 bool clifford::info(unsigned inf) const
143 return inherited::info(inf);
148 int clifford::compare_same_type(const basic & other) const
150 GINAC_ASSERT(is_of_type(other,clifford));
151 // only compare indices
152 return exprseq::compare_same_type(other);
155 bool clifford::is_equal_same_type(const basic & other) const
157 GINAC_ASSERT(is_of_type(other,clifford));
158 // only compare indices
159 return exprseq::is_equal_same_type(other);
162 ex clifford::thisexprseq(const exvector & v) const
164 return clifford(name, v);
167 ex clifford::thisexprseq(exvector *vp) const
169 return clifford(name, vp);
172 ex clifford::simplify_ncmul(const exvector & v) const
174 return simplified_ncmul(v);
181 /** Construct an object representing a Dirac gamma matrix. The index must
182 * be of class lorentzidx.
185 * @return newly constructed object */
186 clifford clifford_gamma(const ex & mu)
188 return clifford("gamma", mu);