3 * Interface to GiNaC's color objects. */
6 * GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #ifndef __GINAC_COLOR_H__
24 #define __GINAC_COLOR_H__
31 #ifndef NO_NAMESPACE_GINAC
33 #endif // ndef NO_NAMESPACE_GINAC
35 const unsigned MAX_REPRESENTATION_LABELS = 4;
36 const unsigned COLOR_EIGHT = 8; // N*N-1
37 const unsigned COLOR_THREE = 3; // N
39 // Cint doesn't like vector<..,default_alloc> but malloc_alloc is
40 // unstandardized and not supported by newer GCCs.
41 #if defined(__GNUC__) && ((__GNUC__ == 2) && (__GNUC_MINOR__ < 97))
42 typedef std::vector<exvector,malloc_alloc> exvectorvector;
44 typedef std::vector<exvector> exvectorvector;
47 /** Base class for color object */
48 class color : public indexed
50 GINAC_DECLARE_REGISTERED_CLASS(color, indexed)
54 friend color color_ONE(unsigned rl);
55 friend color color_T(const ex & a, unsigned rl);
56 friend color color_f(const ex & a, const ex & b, const ex & c);
57 friend color color_d(const ex & a, const ex & b, const ex & c);
58 friend ex color_h(const ex & a, const ex & b, const ex & c);
59 friend color color_delta8(const ex & a, const ex & b);
60 friend unsigned subs_index_in_exvector(exvector & v, const ex & is, const ex & ir);
61 friend void split_color_string_in_parts(const exvector & v, exvector & delta8vec,
62 exvector & fvec, exvector & dvec,
63 exvectorvector & Tvecs,
64 exvectorvector & ONEvecs,
65 exvector & unknownvec);
66 friend exvector recombine_color_string(exvector & delta8vec, exvector & fvec,
67 exvector & dvec, exvectorvector & Tvecs,
68 exvectorvector & ONEvecs, exvector & unknownvec);
69 friend ex color_trace_of_one_representation_label(const exvector & v);
70 friend ex color_trace(const exvector & v, unsigned rl);
71 friend ex simplify_pure_color_string(const ex & e);
72 friend ex simplify_color(const ex & e);
79 invalid, // not properly constructed by one of the friend functions
89 // default constructor, destructor, copy constructor assignment operator and helpers
93 color(const color & other);
94 const color & operator=(const color & other);
96 void copy(const color & other);
97 void destroy(bool call_parent);
101 color(color_types const t, unsigned rl=0);
102 color(color_types const t, const ex & i1, unsigned rl=0);
103 color(color_types const t, const ex & i1, const ex & i2, unsigned rl=0);
104 color(color_types const t, const ex & i1, const ex & i2, const ex & i3,
106 color(color_types const t, const exvector & iv, unsigned rl=0);
107 color(color_types const t, exvector * ivp, unsigned rl=0);
109 // functions overriding virtual functions from base classes
111 basic * duplicate() const;
112 void printraw(std::ostream & os) const;
113 void printtree(std::ostream & os, unsigned indent) const;
114 void print(std::ostream & os, unsigned upper_precedence=0) const;
115 void printcsrc(std::ostream & os, unsigned type, unsigned upper_precedence=0) const;
116 bool info(unsigned inf) const;
117 ex eval(int level=0) const;
119 int compare_same_type(const basic & other) const;
120 bool is_equal_same_type(const basic & other) const;
121 ex simplify_ncmul(const exvector & v) const;
122 ex thisexprseq(const exvector & v) const;
123 ex thisexprseq(exvector * vp) const;
125 // new virtual functions which can be overridden by derived classes
128 // non-virtual functions in this class
130 bool all_of_type_coloridx(void) const;
136 unsigned representation_label; // to distiguish independent color matrices coming from separated fermion lines
141 extern const color some_color;
142 extern const std::type_info & typeid_color;
145 inline const color &ex_to_color(const ex &e)
147 return static_cast<const color &>(*e.bp);
150 inline color &ex_to_nonconst_color(const ex &e)
152 return static_cast<color &>(*e.bp);
155 color color_ONE(unsigned rl=0);
156 color color_T(const ex & a, unsigned rl=0);
157 color color_f(const ex & a, const ex & b, const ex & c);
158 color color_d(const ex & a, const ex & b, const ex & c);
159 ex color_h(const ex & a, const ex & b, const ex & c);
160 color color_delta8(const ex & a, const ex & b);
161 void split_color_string_in_parts(const exvector & v, exvector & delta8vec,
162 exvector & fvec, exvector & dvec,
163 exvectorvector & Tvecs,
164 exvectorvector & ONEvecs,
165 exvector & unknownvec);
166 exvector recombine_color_string(exvector & delta8vec, exvector & fvec,
167 exvector & dvec, exvectorvector & Tvecs,
168 exvectorvector & ONEvecs, exvector & unknownvec);
169 ex color_trace_of_one_representation_label(const exvector & v);
170 ex color_trace(const exvector & v, unsigned rl=0);
171 ex simplify_pure_color_string(const ex & e);
172 ex simplify_color(const ex & e);
174 ex brute_force_sum_color_indices(const ex & e);
176 void append_exvector_to_exvector(exvector & dest, const exvector & source);
178 #ifndef NO_NAMESPACE_GINAC
180 #endif // ndef NO_NAMESPACE_GINAC
182 #endif // ndef __GINAC_COLOR_H__