tvmet - This is the Tiny Vector Matrix Expression Templat…

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This is the Tiny Vector Matrix Expression Templates library found at http://tvmet.sourceforge.net. It is the fastest and most compact matrix lib out there (for < 10x10 matricies). I have done some minor tweaks to make it compile for mbed. For examples and hints on how to use, see: http://tvmet.sourceforge.net/usage.html

Dependents: Eurobot_2012_Secondary

CommaInitializer.h@0:feb4117d16d8, 2012-03-28 (annotated)

Committer:: madcowswe
Date:: Wed Mar 28 15:53:45 2012 +0000
Revision:: 0:feb4117d16d8

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User	Revision	Line number	New contents of line
madcowswe	0:feb4117d16d8	1	/*
madcowswe	0:feb4117d16d8	2	* Tiny Vector Matrix Library
madcowswe	0:feb4117d16d8	3	* Dense Vector Matrix Libary of Tiny size using Expression Templates
madcowswe	0:feb4117d16d8	4	*
madcowswe	0:feb4117d16d8	5	* Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net>
madcowswe	0:feb4117d16d8	6	*
madcowswe	0:feb4117d16d8	7	* This library is free software; you can redistribute it and/or
madcowswe	0:feb4117d16d8	8	* modify it under the terms of the GNU Lesser General Public
madcowswe	0:feb4117d16d8	9	* License as published by the Free Software Foundation; either
madcowswe	0:feb4117d16d8	10	* version 2.1 of the License, or (at your option) any later version.
madcowswe	0:feb4117d16d8	11	*
madcowswe	0:feb4117d16d8	12	* This library is distributed in the hope that it will be useful,
madcowswe	0:feb4117d16d8	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
madcowswe	0:feb4117d16d8	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
madcowswe	0:feb4117d16d8	15	* Lesser General Public License for more details.
madcowswe	0:feb4117d16d8	16	*
madcowswe	0:feb4117d16d8	17	* You should have received a copy of the GNU Lesser General Public
madcowswe	0:feb4117d16d8	18	* License along with this library; if not, write to the Free Software
madcowswe	0:feb4117d16d8	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
madcowswe	0:feb4117d16d8	20	*
madcowswe	0:feb4117d16d8	21	* $Id: CommaInitializer.h,v 1.18 2007-06-23 15:58:58 opetzold Exp $
madcowswe	0:feb4117d16d8	22	*/
madcowswe	0:feb4117d16d8	23
madcowswe	0:feb4117d16d8	24	#ifndef TVMET_COMMA_INITIALIZER_H
madcowswe	0:feb4117d16d8	25	#define TVMET_COMMA_INITIALIZER_H
madcowswe	0:feb4117d16d8	26
madcowswe	0:feb4117d16d8	27	#include <tvmet/CompileTimeError.h>
madcowswe	0:feb4117d16d8	28
madcowswe	0:feb4117d16d8	29	namespace tvmet {
madcowswe	0:feb4117d16d8	30
madcowswe	0:feb4117d16d8	31
madcowswe	0:feb4117d16d8	32	/**
madcowswe	0:feb4117d16d8	33	* \class CommaInitializer CommaInitializer.h "tvmet/CommaInitializer.h"
madcowswe	0:feb4117d16d8	34	* \brief Initialize classes using a comma separated lists.
madcowswe	0:feb4117d16d8	35	*
madcowswe	0:feb4117d16d8	36	* The comma operator is called when it appears next to an object of
madcowswe	0:feb4117d16d8	37	* the type the comma is defined for. However, "operator," is not called
madcowswe	0:feb4117d16d8	38	* for function argument lists, only for objects that are out in the open,
madcowswe	0:feb4117d16d8	39	* separated by commas (Thinking C++
madcowswe	0:feb4117d16d8	40	* <a href=http://www.ida.liu.se/~TDDA14/online/v1ticpp/Chapter12.html>
madcowswe	0:feb4117d16d8	41	* Ch.12: Operator comma</a>).
madcowswe	0:feb4117d16d8	42	*
madcowswe	0:feb4117d16d8	43	* This implementation uses the same technique as described in Todd Veldhuizen
madcowswe	0:feb4117d16d8	44	* Techniques for Scientific C++
madcowswe	0:feb4117d16d8	45	* <a href=http://extreme.indiana.edu/~tveldhui/papers/techniques/techniques01.html#l43>
madcowswe	0:feb4117d16d8	46	* chapter 1.11 Comma overloading</a>.
madcowswe	0:feb4117d16d8	47	*
madcowswe	0:feb4117d16d8	48	* The initializer list is avaible after instanciation of the object,
madcowswe	0:feb4117d16d8	49	* therefore use it like:
madcowswe	0:feb4117d16d8	50	* \code
madcowswe	0:feb4117d16d8	51	* vector3d t;
madcowswe	0:feb4117d16d8	52	* t = 1.0, 2.0, 3.0;
madcowswe	0:feb4117d16d8	53	* \endcode
madcowswe	0:feb4117d16d8	54	* It's evaluated to (((t = 1.0), 2.0), 3.0)
madcowswe	0:feb4117d16d8	55	*
madcowswe	0:feb4117d16d8	56	* For matrizes the initilization is done row wise.
madcowswe	0:feb4117d16d8	57	*
madcowswe	0:feb4117d16d8	58	* If the comma separted list of values longer then the size of the vector
madcowswe	0:feb4117d16d8	59	* or matrix a compile time error will occour. Otherwise the pending values
madcowswe	0:feb4117d16d8	60	* will be written random into the memory.
madcowswe	0:feb4117d16d8	61	*
madcowswe	0:feb4117d16d8	62	*/
madcowswe	0:feb4117d16d8	63	template<class Obj, std::size_t LEN>
madcowswe	0:feb4117d16d8	64	class CommaInitializer
madcowswe	0:feb4117d16d8	65	{
madcowswe	0:feb4117d16d8	66	CommaInitializer();
madcowswe	0:feb4117d16d8	67	CommaInitializer& operator=(const CommaInitializer&);
madcowswe	0:feb4117d16d8	68
madcowswe	0:feb4117d16d8	69	private:
madcowswe	0:feb4117d16d8	70	/**
madcowswe	0:feb4117d16d8	71	* \class Initializer
madcowswe	0:feb4117d16d8	72	* \brief Helper fo recursive overloaded comma operator.
madcowswe	0:feb4117d16d8	73	*/
madcowswe	0:feb4117d16d8	74	template<class T, std::size_t N> class Initializer
madcowswe	0:feb4117d16d8	75	{
madcowswe	0:feb4117d16d8	76	Initializer();
madcowswe	0:feb4117d16d8	77	Initializer& operator=(const Initializer&);
madcowswe	0:feb4117d16d8	78
madcowswe	0:feb4117d16d8	79	public:
madcowswe	0:feb4117d16d8	80	typedef T value_type;
madcowswe	0:feb4117d16d8	81	typedef T* iterator;
madcowswe	0:feb4117d16d8	82
madcowswe	0:feb4117d16d8	83	public:
madcowswe	0:feb4117d16d8	84	Initializer(iterator iter) : m_iter(iter) { }
madcowswe	0:feb4117d16d8	85
madcowswe	0:feb4117d16d8	86	/** Overloads the comma operator for recursive assign values from comma
madcowswe	0:feb4117d16d8	87	separated list. */
madcowswe	0:feb4117d16d8	88	Initializer<value_type, N+1> operator,(value_type rhs)
madcowswe	0:feb4117d16d8	89	{
madcowswe	0:feb4117d16d8	90	TVMET_CT_CONDITION(N < LEN, CommaInitializerList_is_too_long)
madcowswe	0:feb4117d16d8	91	*m_iter = rhs;
madcowswe	0:feb4117d16d8	92	return Initializer<value_type, N+1>(m_iter + 1);
madcowswe	0:feb4117d16d8	93	}
madcowswe	0:feb4117d16d8	94
madcowswe	0:feb4117d16d8	95	private:
madcowswe	0:feb4117d16d8	96	iterator m_iter;
madcowswe	0:feb4117d16d8	97	};
madcowswe	0:feb4117d16d8	98
madcowswe	0:feb4117d16d8	99	public:
madcowswe	0:feb4117d16d8	100	typedef typename Obj::value_type value_type;
madcowswe	0:feb4117d16d8	101	typedef value_type* iterator;
madcowswe	0:feb4117d16d8	102
madcowswe	0:feb4117d16d8	103	public:
madcowswe	0:feb4117d16d8	104	CommaInitializer(const CommaInitializer& rhs)
madcowswe	0:feb4117d16d8	105	: m_object(rhs.m_object),
madcowswe	0:feb4117d16d8	106	m_data(rhs.m_data),
madcowswe	0:feb4117d16d8	107	m_wipeout_on_destruct(true)
madcowswe	0:feb4117d16d8	108	{
madcowswe	0:feb4117d16d8	109	rhs.disable();
madcowswe	0:feb4117d16d8	110	}
madcowswe	0:feb4117d16d8	111
madcowswe	0:feb4117d16d8	112	/** Constructor used by Vector or Matrix operator(value_type rhs) */
madcowswe	0:feb4117d16d8	113	CommaInitializer(Obj& obj, value_type x)
madcowswe	0:feb4117d16d8	114	: m_object(obj),
madcowswe	0:feb4117d16d8	115	m_data(x),
madcowswe	0:feb4117d16d8	116	m_wipeout_on_destruct(true)
madcowswe	0:feb4117d16d8	117	{ }
madcowswe	0:feb4117d16d8	118
madcowswe	0:feb4117d16d8	119	/** Destructs and assigns the comma separated value. */
madcowswe	0:feb4117d16d8	120	~CommaInitializer() {
madcowswe	0:feb4117d16d8	121	if(m_wipeout_on_destruct) m_object.assign_value(m_data);
madcowswe	0:feb4117d16d8	122	}
madcowswe	0:feb4117d16d8	123
madcowswe	0:feb4117d16d8	124	/** Overloaded comma operator, called only once for the first occoured comma. This
madcowswe	0:feb4117d16d8	125	means the first value is assigned by %operator=() and the 2nd value after the
madcowswe	0:feb4117d16d8	126	comma. Therfore we call the %Initializer::operator,() for the list starting
madcowswe	0:feb4117d16d8	127	after the 2nd. */
madcowswe	0:feb4117d16d8	128	Initializer<value_type, 2> operator,(value_type rhs);
madcowswe	0:feb4117d16d8	129
madcowswe	0:feb4117d16d8	130	void disable() const { m_wipeout_on_destruct = false; }
madcowswe	0:feb4117d16d8	131
madcowswe	0:feb4117d16d8	132	private:
madcowswe	0:feb4117d16d8	133	Obj& m_object;
madcowswe	0:feb4117d16d8	134	value_type m_data;
madcowswe	0:feb4117d16d8	135	mutable bool m_wipeout_on_destruct;
madcowswe	0:feb4117d16d8	136	};
madcowswe	0:feb4117d16d8	137
madcowswe	0:feb4117d16d8	138
madcowswe	0:feb4117d16d8	139	/*
madcowswe	0:feb4117d16d8	140	* Implementation
madcowswe	0:feb4117d16d8	141	*/
madcowswe	0:feb4117d16d8	142	template<class Obj, std::size_t LEN>
madcowswe	0:feb4117d16d8	143	typename CommaInitializer<Obj, LEN>::template Initializer<typename Obj::value_type, 2>
madcowswe	0:feb4117d16d8	144	CommaInitializer<Obj, LEN>::operator,(typename Obj::value_type rhs)
madcowswe	0:feb4117d16d8	145	{
madcowswe	0:feb4117d16d8	146	m_wipeout_on_destruct = false;
madcowswe	0:feb4117d16d8	147	iterator iter1 = m_object.data();
madcowswe	0:feb4117d16d8	148	*iter1 = m_data;
madcowswe	0:feb4117d16d8	149	iterator iter2 = iter1 + 1;
madcowswe	0:feb4117d16d8	150	*iter2 = rhs;
madcowswe	0:feb4117d16d8	151	return Initializer<value_type, 2>(iter2 + 1);
madcowswe	0:feb4117d16d8	152	}
madcowswe	0:feb4117d16d8	153
madcowswe	0:feb4117d16d8	154
madcowswe	0:feb4117d16d8	155
madcowswe	0:feb4117d16d8	156	} // namespace tvmet
madcowswe	0:feb4117d16d8	157
madcowswe	0:feb4117d16d8	158
madcowswe	0:feb4117d16d8	159	#endif // TVMET_COMMA_INITIALIZER_H
madcowswe	0:feb4117d16d8	160
madcowswe	0:feb4117d16d8	161	// Local Variables:
madcowswe	0:feb4117d16d8	162	// mode:C++
madcowswe	0:feb4117d16d8	163	// tab-width:8
madcowswe	0:feb4117d16d8	164	// End:

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Type:	Library
Created:	28 Mar 2012
Imports:	62
Forks:	0
Commits:	1
Dependents:	1
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CommaInitializer.h@0:feb4117d16d8, 2012-03-28 (annotated)

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