GiNaC/ginac/ncmul.h

/** @file ncmul.h
 *
 *  Interface to GiNaC's non-commutative products of expressions. */

/*
 *  GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef __GINAC_NCMUL_H__
#define __GINAC_NCMUL_H__

#include "exprseq.h"

#ifndef NO_NAMESPACE_GINAC
namespace GiNaC {
#endif // ndef NO_NAMESPACE_GINAC

/** Non-commutative product of expressions. */
class ncmul : public exprseq
{
        GINAC_DECLARE_REGISTERED_CLASS(ncmul, exprseq)

        friend class power;
        friend ex nonsimplified_ncmul(const exvector & v);
        friend ex simplified_ncmul(const exvector & v);

// member functions

        // default constructor, destructor, copy constructor assignment operator and helpers
public:
        ncmul();
        ~ncmul();
        ncmul(const ncmul & other);
        const ncmul & operator=(const ncmul & other);
protected:
        void copy(const ncmul & other);
        void destroy(bool call_parent);

        // other constructors
public:
        ncmul(const ex & lh, const ex & rh);
        ncmul(const ex & f1, const ex & f2, const ex & f3);
        ncmul(const ex & f1, const ex & f2, const ex & f3,
              const ex & f4);
        ncmul(const ex & f1, const ex & f2, const ex & f3,
              const ex & f4, const ex & f5);
        ncmul(const ex & f1, const ex & f2, const ex & f3,
              const ex & f4, const ex & f5, const ex & f6);
        ncmul(const exvector & v, bool discardable=false);
        ncmul(exvector * vp); // vp will be deleted

        // functions overriding virtual functions from bases classes
public:
        basic * duplicate() const;
        void print(std::ostream & os, unsigned upper_precedence) const;
        void printraw(std::ostream & os) const;
        void printcsrc(std::ostream & os, unsigned type, unsigned upper_precedence = 0) const;
        bool info(unsigned inf) const;
        int degree(const symbol & s) const;
        int ldegree(const symbol & s) const;
        ex expand(unsigned options=0) const;
        ex coeff(const symbol & s, int n=1) const;
        ex eval(int level=0) const;
        ex subs(const lst & ls, const lst & lr) const;
        exvector get_indices(void) const;
        ex thisexprseq(const exvector & v) const;
        ex thisexprseq(exvector * vp) const;
protected:
        ex derivative(const symbol & s) const;
        int compare_same_type(const basic & other) const;
        unsigned return_type(void) const;
        unsigned return_type_tinfo(void) const;
        
        // new virtual functions which can be overridden by derived classes
        // none

        // non-virtual functions in this class
protected:
        unsigned count_factors(const ex & e) const;
        void append_factors(exvector & v, const ex & e) const;
        exvector expandchildren(unsigned options) const;
public:
        const exvector & get_factors(void) const;

// member variables

protected:
        static unsigned precedence;
};

// global constants

extern const ncmul some_ncmul;
extern const std::type_info & typeid_ncmul;

// friend funtions 

ex nonsimplified_ncmul(const exvector & v);
ex simplified_ncmul(const exvector & v);

// utility functions
inline const ncmul &ex_to_ncmul(const ex &e)
{
        return static_cast <const ncmul &>(*e.bp);
}

#ifndef NO_NAMESPACE_GINAC
} // namespace GiNaC
#endif // ndef NO_NAMESPACE_GINAC

#endif // ndef __GINAC_NCMUL_H__
1	/** @file ncmul.h
2	*
3	* Interface to GiNaC's non-commutative products of expressions. */
4
5	/*
6	* GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
7	*
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.
12	*
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.
17	*
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
21	*/
22
23	#ifndef __GINAC_NCMUL_H__
24	#define __GINAC_NCMUL_H__
25
26	#include "exprseq.h"
27
28	#ifndef NO_NAMESPACE_GINAC
29	namespace GiNaC {
30	#endif // ndef NO_NAMESPACE_GINAC
31
32	/** Non-commutative product of expressions. */
33	class ncmul : public exprseq
34	{
35	GINAC_DECLARE_REGISTERED_CLASS(ncmul, exprseq)
36
37	friend class power;
38	friend ex nonsimplified_ncmul(const exvector & v);
39	friend ex simplified_ncmul(const exvector & v);
40
41	// member functions
42
43	// default constructor, destructor, copy constructor assignment operator and helpers
44	public:
45	ncmul();
46	~ncmul();
47	ncmul(const ncmul & other);
48	const ncmul & operator=(const ncmul & other);
49	protected:
50	void copy(const ncmul & other);
51	void destroy(bool call_parent);
52
53	// other constructors
54	public:
55	ncmul(const ex & lh, const ex & rh);
56	ncmul(const ex & f1, const ex & f2, const ex & f3);
57	ncmul(const ex & f1, const ex & f2, const ex & f3,
58	const ex & f4);
59	ncmul(const ex & f1, const ex & f2, const ex & f3,
60	const ex & f4, const ex & f5);
61	ncmul(const ex & f1, const ex & f2, const ex & f3,
62	const ex & f4, const ex & f5, const ex & f6);
63	ncmul(const exvector & v, bool discardable=false);
64	ncmul(exvector * vp); // vp will be deleted
65
66	// functions overriding virtual functions from bases classes
67	public:
68	basic * duplicate() const;
69	void print(std::ostream & os, unsigned upper_precedence) const;
70	void printraw(std::ostream & os) const;
71	void printcsrc(std::ostream & os, unsigned type, unsigned upper_precedence = 0) const;
72	bool info(unsigned inf) const;
73	int degree(const symbol & s) const;
74	int ldegree(const symbol & s) const;
75	ex expand(unsigned options=0) const;
76	ex coeff(const symbol & s, int n=1) const;
77	ex eval(int level=0) const;
78	ex subs(const lst & ls, const lst & lr) const;
79	exvector get_indices(void) const;
80	ex thisexprseq(const exvector & v) const;
81	ex thisexprseq(exvector * vp) const;
82	protected:
83	ex derivative(const symbol & s) const;
84	int compare_same_type(const basic & other) const;
85	unsigned return_type(void) const;
86	unsigned return_type_tinfo(void) const;
87
88	// new virtual functions which can be overridden by derived classes
89	// none
90
91	// non-virtual functions in this class
92	protected:
93	unsigned count_factors(const ex & e) const;
94	void append_factors(exvector & v, const ex & e) const;
95	exvector expandchildren(unsigned options) const;
96	public:
97	const exvector & get_factors(void) const;
98
99	// member variables
100
101	protected:
102	static unsigned precedence;
103	};
104
105	// global constants
106
107	extern const ncmul some_ncmul;
108	extern const std::type_info & typeid_ncmul;
109
110	// friend funtions
111
112	ex nonsimplified_ncmul(const exvector & v);
113	ex simplified_ncmul(const exvector & v);
114
115	// utility functions
116	inline const ncmul &ex_to_ncmul(const ex &e)
117	{
118	return static_cast <const ncmul &>(*e.bp);
119	}
120
121	#ifndef NO_NAMESPACE_GINAC
122	} // namespace GiNaC
123	#endif // ndef NO_NAMESPACE_GINAC
124
125	#endif // ndef __GINAC_NCMUL_H__
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