3 * Interface to GiNaC's color objects. */
6 * GiNaC Copyright (C) 1999-2000 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 // typedef std::vector<exvector> exvectorvector;
40 typedef std::vector<exvector,malloc_alloc> exvectorvector; // CINT does not like vector<...,default_alloc>
42 /** Base class for color object */
43 class color : public indexed
45 GINAC_DECLARE_REGISTERED_CLASS(color, indexed)
49 friend color color_ONE(unsigned rl);
50 friend color color_T(const ex & a, unsigned rl);
51 friend color color_f(const ex & a, const ex & b, const ex & c);
52 friend color color_d(const ex & a, const ex & b, const ex & c);
53 friend ex color_h(const ex & a, const ex & b, const ex & c);
54 friend color color_delta8(const ex & a, const ex & b);
55 friend unsigned subs_index_in_exvector(exvector & v, const ex & is, const ex & ir);
56 friend void split_color_string_in_parts(const exvector & v, exvector & delta8vec,
57 exvector & fvec, exvector & dvec,
58 exvectorvector & Tvecs,
59 exvectorvector & ONEvecs,
60 exvector & unknownvec);
61 friend exvector recombine_color_string(exvector & delta8vec, exvector & fvec,
62 exvector & dvec, exvectorvector & Tvecs,
63 exvectorvector & ONEvecs, exvector & unknownvec);
64 friend ex color_trace_of_one_representation_label(const exvector & v);
65 friend ex color_trace(const exvector & v, unsigned rl);
66 friend ex simplify_pure_color_string(const ex & e);
67 friend ex simplify_color(const ex & e);
74 invalid, // not properly constructed by one of the friend functions
84 // default constructor, destructor, copy constructor assignment operator and helpers
88 color(const color & other);
89 const color & operator=(const color & other);
91 void copy(const color & other);
92 void destroy(bool call_parent);
96 color(color_types const t, unsigned rl=0);
97 color(color_types const t, const ex & i1, unsigned rl=0);
98 color(color_types const t, const ex & i1, const ex & i2, unsigned rl=0);
99 color(color_types const t, const ex & i1, const ex & i2, const ex & i3,
101 color(color_types const t, const exvector & iv, unsigned rl=0);
102 color(color_types const t, exvector * ivp, unsigned rl=0);
104 // functions overriding virtual functions from base classes
106 basic * duplicate() const;
107 void printraw(std::ostream & os) const;
108 void printtree(std::ostream & os, unsigned indent) const;
109 void print(std::ostream & os, unsigned upper_precedence=0) const;
110 void printcsrc(std::ostream & os, unsigned type, unsigned upper_precedence=0) const;
111 bool info(unsigned inf) const;
112 ex eval(int level=0) const;
114 int compare_same_type(const basic & other) const;
115 bool is_equal_same_type(const basic & other) const;
116 ex simplify_ncmul(const exvector & v) const;
117 ex thisexprseq(const exvector & v) const;
118 ex thisexprseq(exvector * vp) const;
120 // new virtual functions which can be overridden by derived classes
123 // non-virtual functions in this class
125 bool all_of_type_coloridx(void) const;
131 unsigned representation_label; // to distiguish independent color matrices coming from separated fermion lines
136 extern const color some_color;
137 extern const std::type_info & typeid_color;
140 inline const color &ex_to_color(const ex &e)
142 return static_cast<const color &>(*e.bp);
145 inline color &ex_to_nonconst_color(const ex &e)
147 return static_cast<color &>(*e.bp);
150 color color_ONE(unsigned rl=0);
151 color color_T(const ex & a, unsigned rl=0);
152 color color_f(const ex & a, const ex & b, const ex & c);
153 color color_d(const ex & a, const ex & b, const ex & c);
154 ex color_h(const ex & a, const ex & b, const ex & c);
155 color color_delta8(const ex & a, const ex & b);
156 void split_color_string_in_parts(const exvector & v, exvector & delta8vec,
157 exvector & fvec, exvector & dvec,
158 exvectorvector & Tvecs,
159 exvectorvector & ONEvecs,
160 exvector & unknownvec);
161 exvector recombine_color_string(exvector & delta8vec, exvector & fvec,
162 exvector & dvec, exvectorvector & Tvecs,
163 exvectorvector & ONEvecs, exvector & unknownvec);
164 ex color_trace_of_one_representation_label(const exvector & v);
165 ex color_trace(const exvector & v, unsigned rl=0);
166 ex simplify_pure_color_string(const ex & e);
167 ex simplify_color(const ex & e);
169 ex brute_force_sum_color_indices(const ex & e);
171 void append_exvector_to_exvector(exvector & dest, const exvector & source);
173 #ifndef NO_NAMESPACE_GINAC
175 #endif // ndef NO_NAMESPACE_GINAC
177 #endif // ndef __GINAC_COLOR_H__