3 * Interface to GiNaC's simp_lor objects.
5 * GiNaC Copyright (C) 1999 Johannes Gutenberg University Mainz, Germany
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #ifndef _SIMP__GINAC_LOR_H__
23 #define _SIMP__GINAC_LOR_H__
30 #include <ginac/indexed.h>
31 #include <ginac/lorentzidx.h>
33 typedef pair<string,string> strstrpair;
34 typedef pair<strstrpair,lorentzidx> spmapkey;
36 class spmapkey_is_less
39 bool operator()(spmapkey const & lh, spmapkey const & rh) const
42 cerr << "spmapkey_is_less" << endl;
43 cerr << "lh=((" << lh.first.first
44 << "," << lh.first.second << "),";
45 lh.second.printraw(cerr);
48 cerr << "rh=((" << rh.first.first
49 << "," << rh.first.second << "),";
50 rh.second.printraw(cerr);
53 bool res=lh.first<rh.first ||
54 (!(rh.first<lh.first) && lh.second.compare(rh.second)<0 );
55 // cout << "result=" << res << endl;
60 typedef map<spmapkey,ex,spmapkey_is_less> spmap;
64 /** helper class for scalar products */
68 void reg(simp_lor const & v1, simp_lor const & v2, ex const & sp);
69 bool is_defined(simp_lor const & v1, simp_lor const & v2) const;
70 ex evaluate(simp_lor const & v1, simp_lor const & v2) const;
71 void debugprint(void) const;
73 static spmapkey make_key(simp_lor const & v1, simp_lor const & v2);
78 /** Base class for simp_lor object */
79 class simp_lor : public indexed
83 friend class scalar_products;
84 friend simp_lor lor_g(ex const & mu, ex const & nu);
85 friend simp_lor lor_vec(string const & n, ex const & mu);
86 friend ex simplify_simp_lor_mul(ex const & m, scalar_products const & sp);
87 friend ex simplify_simp_lor(ex const & e, scalar_products const & sp);
92 typedef enum { invalid, // not properly constructed by one of the friend functions
99 // default constructor, destructor, copy constructor assignment operator and helpers
103 simp_lor(simp_lor const & other);
104 simp_lor const & operator=(simp_lor const & other);
106 void copy(simp_lor const & other);
107 void destroy(bool call_parent);
109 // other constructors
111 simp_lor(simp_lor_types const t);
112 simp_lor(simp_lor_types const t, ex const & i1, ex const & i2);
113 simp_lor(simp_lor_types const t, string const & n, ex const & i1);
114 simp_lor(simp_lor_types const t, string const & n, exvector const & iv);
115 simp_lor(simp_lor_types const t, string const & n, exvector * ivp);
117 // functions overriding virtual functions from base classes
119 basic * duplicate() const;
120 void printraw(ostream & os) const;
121 void printtree(ostream & os, unsigned indent) const;
122 void print(ostream & os, unsigned upper_precedence=0) const;
123 void printcsrc(ostream & os, unsigned type, unsigned upper_precedence=0) const;
124 bool info(unsigned inf) const;
125 ex eval(int level=0) const;
127 int compare_same_type(basic const & other) const;
128 bool is_equal_same_type(basic const & other) const;
129 unsigned return_type(void) const;
130 unsigned return_type_tinfo(void) const;
131 ex thisexprseq(exvector const & v) const;
132 ex thisexprseq(exvector * vp) const;
134 // new virtual functions which can be overridden by derived classes
137 // non-virtual functions in this class
139 bool all_of_type_lorentzidx(void) const;
150 extern const simp_lor some_simp_lor;
151 extern type_info const & typeid_simp_lor;
155 #define ex_to_simp_lor(X) static_cast<simp_lor const &>(*(X).bp)
156 #define ex_to_nonconst_simp_lor(X) static_cast<simp_lor &>(*(X).bp)
158 simp_lor lor_g(ex const & mu, ex const & nu);
159 simp_lor lor_vec(string const & n, ex const & mu);
160 ex simplify_simp_lor_mul(ex const & m, scalar_products const & sp);
161 ex simplify_simp_lor(ex const & e, scalar_products const & sp);
164 #endif // ndef _SIMP__GINAC_LOR_H__