3 * Interface to GiNaC's non-commutative products of expressions. */
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 __GINAC_NCMUL_H__
24 #define __GINAC_NCMUL_H__
26 #include <ginac/exprseq.h>
30 /** Non-commutative product of expressions. */
31 class ncmul : public exprseq
34 friend ex nonsimplified_ncmul(exvector const & v);
35 friend ex simplified_ncmul(exvector const & v);
39 // default constructor, destructor, copy constructor assignment operator and helpers
43 ncmul(ncmul const & other);
44 ncmul const & operator=(ncmul const & other);
46 void copy(ncmul const & other);
47 void destroy(bool call_parent);
51 ncmul(ex const & lh, ex const & rh);
52 ncmul(ex const & f1, ex const & f2, ex const & f3);
53 ncmul(ex const & f1, ex const & f2, ex const & f3,
55 ncmul(ex const & f1, ex const & f2, ex const & f3,
56 ex const & f4, ex const & f5);
57 ncmul(ex const & f1, ex const & f2, ex const & f3,
58 ex const & f4, ex const & f5, ex const & f6);
59 ncmul(exvector const & v, bool discardable=false);
60 ncmul(exvector * vp); // vp will be deleted
62 // functions overriding virtual functions from bases classes
64 basic * duplicate() const;
65 void printraw(ostream & os) const;
66 void print(ostream & os, unsigned upper_precedence) const;
67 void printcsrc(ostream & os, unsigned upper_precedence) const;
68 bool info(unsigned inf) const;
69 int degree(symbol const & s) const;
70 int ldegree(symbol const & s) const;
71 ex expand(unsigned options=0) const;
72 ex coeff(symbol const & s, int const n=1) const;
73 ex eval(int level=0) const;
74 ex diff(symbol const & s) const;
75 ex subs(lst const & ls, lst const & lr) const;
76 exvector get_indices(void) const;
77 ex thisexprseq(exvector const & v) const;
78 ex thisexprseq(exvector * vp) const;
80 int compare_same_type(basic const & other) const;
81 unsigned return_type(void) const;
82 unsigned return_type_tinfo(void) const;
84 // new virtual functions which can be overridden by derived classes
87 // non-virtual functions in this class
89 unsigned count_factors(ex const & e) const;
90 void append_factors(exvector & v, ex const & e) const;
91 exvector expandchildren(unsigned options) const;
93 exvector const & get_factors(void) const;
98 static unsigned precedence;
103 extern const ncmul some_ncmul;
104 extern type_info const & typeid_ncmul;
108 ex nonsimplified_ncmul(exvector const & v);
109 ex simplified_ncmul(exvector const & v);
112 inline const ncmul &ex_to_ncmul(const ex &e)
114 return static_cast <const ncmul &>(*e.bp);
119 #endif // ndef __GINAC_NCMUL_H__