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root/OpenMD/branches/development/src/math/ParallelRandNumGen.hpp

Comparing:
trunk/src/math/ParallelRandNumGen.hpp (file contents), Revision 388 by tim, Tue Mar 1 23:02:33 2005 UTC vs.
branches/development/src/math/ParallelRandNumGen.hpp (file contents), Revision 1465 by chuckv, Fri Jul 9 23:08:25 2010 UTC

#	Line 1 | Line 1
1	<	/*
1	>	/*
2		* Copyright (c) 2005 The University of Notre Dame. All Rights Reserved.
3		*
4		* The University of Notre Dame grants you ("Licensee") a
#	Line 6 | Line 6
6		* redistribute this software in source and binary code form, provided
7		* that the following conditions are met:
8		*
9	<	* 1. Acknowledgement of the program authors must be made in any
10	<	*    publication of scientific results based in part on use of the
11	<	*    program.  An acceptable form of acknowledgement is citation of
12	<	*    the article in which the program was described (Matthew
13	<	*    A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher
14	<	*    J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented
15	<	*    Parallel Simulation Engine for Molecular Dynamics,"
16	<	*    J. Comput. Chem. 26, pp. 252-271 (2005))
17	<	*
18	<	* 2. Redistributions of source code must retain the above copyright
9	>	* 1. Redistributions of source code must retain the above copyright
10		*    notice, this list of conditions and the following disclaimer.
11		*
12	<	* 3. Redistributions in binary form must reproduce the above copyright
12	>	* 2. Redistributions in binary form must reproduce the above copyright
13		*    notice, this list of conditions and the following disclaimer in the
14		*    documentation and/or other materials provided with the
15		*    distribution.
#	Line 37 | Line 28
28		* arising out of the use of or inability to use software, even if the
29		* University of Notre Dame has been advised of the possibility of
30		* such damages.
31	+	*
32	+	* SUPPORT OPEN SCIENCE!  If you use OpenMD or its source code in your
33	+	* research, please cite the appropriate papers when you publish your
34	+	* work.  Good starting points are:
35	+	*
36	+	* [1]  Meineke, et al., J. Comp. Chem. 26, 252-271 (2005).
37	+	* [2]  Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006).
38	+	* [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008).
39	+	* [4]  Vardeman & Gezelter, in progress (2009).
40		*/
41
42		#ifndef MATH_PARALLELRANDNUMGEN_HPP
43		#define MATH_PARALLELRANDNUMGEN_HPP
44
45		#include <vector>
46	<	#include "MersenneTwister.hpp"
46	>
47		#include "utils/simError.h"
48	+	#include "math/RandNumGen.hpp"
49
50	<	#ifdef IS_MPI
51	<
52	<	namespace oopse {
53	<
54	<
55	<
56	<	/**
57	<	* @class ParallelRandNumGen a parallel random number generator
58	<	* @note use MTRand if you want a non-parallel random number generator in MPI enviroment
59	<	*/
60	<	class ParallelRandNumGen{
61	<	public:
62	<	typedef unsigned long uint32;
63	<
64	<	ParallelRandNumGen( const uint32& oneSeed);
65	<	ParallelRandNumGen();
66	<
67	<	~ParallelRandNumGen() {
68	<	delete mtRand_;
69	<	}
70	<
71	<	/** Returns a real number in [0,1] */
72	<	double rand() {
73	<	return mtRand_->rand();
74	<	}
75	<
76	<	/** Returns a real number in [0, n] */
77	<	double rand( const double& n ) {
78	<	return mtRand_->rand(n);
78	<	}
79	<
80	<	/** Returns a real number in [0, 1) */
81	<	double randExc() {
82	<	return mtRand_->randExc();
83	<	}
84	<
85	<	/** Returns a real number in [0, n) */
86	<	double randExc( const double& n ) {
87	<	return mtRand_->randExc(n);
88	<	}
89	<
90	<	/** Returns a real number in (0, 1) */
91	<	double randDblExc() {
92	<	return mtRand_->randDblExc();
93	<	}
94	<
95	<	/** Returns a real number in (0, n) */
96	<	double randDblExc( const double& n ) {
97	<	return mtRand_->randDblExc(n);
98	<	}
99	<
100	<	/** Returns aninteger in [0,2^32-1]  */
101	<	uint32 randInt() {
102	<	return mtRand_->randInt();
103	<	}
104	<
105	<	/** Returns aninteger in [0, n]  for n < 2^32 */
106	<	uint32 randInt( const uint32& n ) {
107	<	return mtRand_->randInt(n);
108	<	}
109	<
110	<	/** Returns a 53-bitreal number in [0,1) (capacity of IEEE double precision) */
111	<	double rand53() {
112	<	return mtRand_->rand53();
113	<	}
114	<
115	<	/** Access to nonuniform random number distributions */
116	<	double randNorm( const double& mean, const double& variance) {
117	<	return mtRand_->randNorm(mean, variance);
118	<	}
119	<
120	<	// Re-seeding functions with same behavior as initializers
121	<	void seed( const uint32 oneSeed );
122	<
123	<	void seed();
124	<
125	<	private:
126	<
127	<	MTRand* mtRand_;
128	<
129	<	static int nCreatedRNG_; /**< number of created random number of generator*/
130	<
131	<	};
132	<
50	>	namespace OpenMD {
51	>
52	>	/**
53	>	* @class ParallelRandNumGen a parallel random number generator
54	>	* @note use SeqRandNumGen if you want a non-parallel random number
55	>	* generator.
56	>	*/
57	>	class ParallelRandNumGen : public RandNumGen{
58	>	public:
59	>	typedef unsigned long uint32;
60	>
61	>	ParallelRandNumGen( const uint32& oneSeed);
62	>
63	>	ParallelRandNumGen();
64	>
65	>	virtual void seed( const uint32 oneSeed );
66	>
67	>	virtual void seed();
68	>
69	>	private:
70	>
71	>	ParallelRandNumGen(const ParallelRandNumGen&);
72	>	ParallelRandNumGen& operator =(const ParallelRandNumGen&);
73	>
74	>	static int nCreatedRNG_; /**< number of random number
75	>	generators created */
76	>	int myRank_;
77	>	};
78	>
79		}
134	–	#endif
135	–
80		#endif

Comparing:
trunk/src/math/ParallelRandNumGen.hpp (property svn:keywords), Revision 388 by tim, Tue Mar 1 23:02:33 2005 UTC vs.
branches/development/src/math/ParallelRandNumGen.hpp (property svn:keywords), Revision 1465 by chuckv, Fri Jul 9 23:08:25 2010 UTC

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