3 * Interface to GiNaC's simp_lor objects. */
6 * GiNaC Copyright (C) 1999 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 _SIMP__GINAC_LOR_H__
24 #define _SIMP__GINAC_LOR_H__
31 #include <ginac/indexed.h>
32 #include <ginac/lorentzidx.h>
34 typedef pair<string,string> strstrpair;
35 typedef pair<strstrpair,lorentzidx> spmapkey;
37 class spmapkey_is_less
40 bool operator()(spmapkey const & lh, spmapkey const & rh) const
43 cerr << "spmapkey_is_less" << endl;
44 cerr << "lh=((" << lh.first.first
45 << "," << lh.first.second << "),";
46 lh.second.printraw(cerr);
49 cerr << "rh=((" << rh.first.first
50 << "," << rh.first.second << "),";
51 rh.second.printraw(cerr);
54 bool res=lh.first<rh.first ||
55 (!(rh.first<lh.first) && lh.second.compare(rh.second)<0 );
56 // cout << "result=" << res << endl;
61 typedef map<spmapkey,ex,spmapkey_is_less> spmap;
65 /** helper class for scalar products */
69 void reg(simp_lor const & v1, simp_lor const & v2, ex const & sp);
70 bool is_defined(simp_lor const & v1, simp_lor const & v2) const;
71 ex evaluate(simp_lor const & v1, simp_lor const & v2) const;
72 void debugprint(void) const;
74 static spmapkey make_key(simp_lor const & v1, simp_lor const & v2);
79 /** Base class for simp_lor object */
80 class simp_lor : public indexed
84 friend class scalar_products;
85 friend simp_lor lor_g(ex const & mu, ex const & nu);
86 friend simp_lor lor_vec(string const & n, ex const & mu);
87 friend ex simplify_simp_lor_mul(ex const & m, scalar_products const & sp);
88 friend ex simplify_simp_lor(ex const & e, scalar_products const & sp);
93 typedef enum { invalid, // not properly constructed by one of the friend functions
100 // default constructor, destructor, copy constructor assignment operator and helpers
104 simp_lor(simp_lor const & other);
105 simp_lor const & operator=(simp_lor const & other);
107 void copy(simp_lor const & other);
108 void destroy(bool call_parent);
110 // other constructors
112 simp_lor(simp_lor_types const t);
113 simp_lor(simp_lor_types const t, ex const & i1, ex const & i2);
114 simp_lor(simp_lor_types const t, string const & n, ex const & i1);
115 simp_lor(simp_lor_types const t, string const & n, exvector const & iv);
116 simp_lor(simp_lor_types const t, string const & n, exvector * ivp);
118 // functions overriding virtual functions from base classes
120 basic * duplicate() const;
121 void printraw(ostream & os) const;
122 void printtree(ostream & os, unsigned indent) const;
123 void print(ostream & os, unsigned upper_precedence=0) const;
124 void printcsrc(ostream & os, unsigned type, unsigned upper_precedence=0) const;
125 bool info(unsigned inf) const;
126 ex eval(int level=0) const;
128 int compare_same_type(basic const & other) const;
129 bool is_equal_same_type(basic const & other) const;
130 unsigned return_type(void) const;
131 unsigned return_type_tinfo(void) const;
132 ex thisexprseq(exvector const & v) const;
133 ex thisexprseq(exvector * vp) const;
135 // new virtual functions which can be overridden by derived classes
138 // non-virtual functions in this class
140 bool all_of_type_lorentzidx(void) const;
151 extern const simp_lor some_simp_lor;
152 extern type_info const & typeid_simp_lor;
156 #define ex_to_simp_lor(X) static_cast<simp_lor const &>(*(X).bp)
157 #define ex_to_nonconst_simp_lor(X) static_cast<simp_lor &>(*(X).bp)
159 simp_lor lor_g(ex const & mu, ex const & nu);
160 simp_lor lor_vec(string const & n, ex const & mu);
161 ex simplify_simp_lor_mul(ex const & m, scalar_products const & sp);
162 ex simplify_simp_lor(ex const & e, scalar_products const & sp);
165 #endif // ndef _SIMP__GINAC_LOR_H__