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>
36 typedef pair<string,string> strstrpair;
37 typedef pair<strstrpair,lorentzidx> spmapkey;
39 class spmapkey_is_less
42 bool operator()(spmapkey const & lh, spmapkey const & rh) const
45 cerr << "spmapkey_is_less" << endl;
46 cerr << "lh=((" << lh.first.first
47 << "," << lh.first.second << "),";
48 lh.second.printraw(cerr);
51 cerr << "rh=((" << rh.first.first
52 << "," << rh.first.second << "),";
53 rh.second.printraw(cerr);
56 bool res=lh.first<rh.first ||
57 (!(rh.first<lh.first) && lh.second.compare(rh.second)<0 );
58 // cout << "result=" << res << endl;
63 typedef map<spmapkey,ex,spmapkey_is_less> spmap;
67 /** helper class for scalar products */
71 void reg(simp_lor const & v1, simp_lor const & v2, ex const & sp);
72 bool is_defined(simp_lor const & v1, simp_lor const & v2) const;
73 ex evaluate(simp_lor const & v1, simp_lor const & v2) const;
74 void debugprint(void) const;
76 static spmapkey make_key(simp_lor const & v1, simp_lor const & v2);
81 /** Base class for simp_lor object */
82 class simp_lor : public indexed
86 friend class scalar_products;
87 friend simp_lor lor_g(ex const & mu, ex const & nu);
88 friend simp_lor lor_vec(string const & n, ex const & mu);
89 friend ex simplify_simp_lor_mul(ex const & m, scalar_products const & sp);
90 friend ex simplify_simp_lor(ex const & e, scalar_products const & sp);
95 typedef enum { invalid, // not properly constructed by one of the friend functions
102 // default constructor, destructor, copy constructor assignment operator and helpers
106 simp_lor(simp_lor const & other);
107 simp_lor const & operator=(simp_lor const & other);
109 void copy(simp_lor const & other);
110 void destroy(bool call_parent);
112 // other constructors
114 simp_lor(simp_lor_types const t);
115 simp_lor(simp_lor_types const t, ex const & i1, ex const & i2);
116 simp_lor(simp_lor_types const t, string const & n, ex const & i1);
117 simp_lor(simp_lor_types const t, string const & n, exvector const & iv);
118 simp_lor(simp_lor_types const t, string const & n, exvector * ivp);
120 // functions overriding virtual functions from base classes
122 basic * duplicate() const;
123 void printraw(ostream & os) const;
124 void printtree(ostream & os, unsigned indent) const;
125 void print(ostream & os, unsigned upper_precedence=0) const;
126 void printcsrc(ostream & os, unsigned type, unsigned upper_precedence=0) const;
127 bool info(unsigned inf) const;
128 ex eval(int level=0) const;
130 int compare_same_type(basic const & other) const;
131 bool is_equal_same_type(basic const & other) const;
132 unsigned return_type(void) const;
133 unsigned return_type_tinfo(void) const;
134 ex thisexprseq(exvector const & v) const;
135 ex thisexprseq(exvector * vp) const;
137 // new virtual functions which can be overridden by derived classes
140 // non-virtual functions in this class
142 bool all_of_type_lorentzidx(void) const;
153 extern const simp_lor some_simp_lor;
154 extern type_info const & typeid_simp_lor;
157 inline const simp_lor &ex_to_simp_lor(const ex &e)
159 return static_cast<const simp_lor &>(*e.bp);
162 inline simp_lor &ex_to_nonconst_simp_lor(const ex &e)
164 return static_cast<simp_lor &>(*e.bp);
167 simp_lor lor_g(ex const & mu, ex const & nu);
168 simp_lor lor_vec(string const & n, ex const & mu);
169 ex simplify_simp_lor_mul(ex const & m, scalar_products const & sp);
170 ex simplify_simp_lor(ex const & e, scalar_products const & sp);
175 #endif // ndef _SIMP__GINAC_LOR_H__