vcg::math::MarsenneTwisterRNG Class Reference

#include <random_generator.h>

Inheritance diagram for vcg::math::MarsenneTwisterRNG:

[legend]

List of all members.

Public Member Functions
unsigned int	generate (unsigned int)
double	generate01 ()
	Returns a random number in the [0,1) real interval using the improved Marsenne-Twister.
double	generate01closed ()
	Returns a random number in the [0,1] real interval using the improved Marsenne-Twister.
double	generate01open ()
	Generates a random number in the (0,1) real interval using the improved Marsenne-Twister.
void	initialize (unsigned int seed)
	(Re-)initialize with the given seed.
void	initializeByArray (unsigned int init_key[], int key_length)
	MarsenneTwisterRNG ()
virtual	~MarsenneTwisterRNG ()
Private Attributes
unsigned int	mt [N]
int	mti
Static Private Attributes
static const unsigned int	LOWER_MASK = 0x7fffffffu
static const int	M = 397
static const unsigned int	MATRIX_A = 0x9908b0dfu
static const int	N = 624
static const unsigned int	UPPER_MASK = 0x80000000u

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Detailed Description

The second one is an improved Marsenne-Twister algorithm (MT19937) Coded by Takuji Nishimura and Makoto Matsumoto (see copyright note below) and successively modified to be a C++ class by Daniel Dunbar.

References for improved Marsenne-Twister:

http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html

Definition at line 173 of file random_generator.h.

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Constructor & Destructor Documentation

vcg::math::MarsenneTwisterRNG::MarsenneTwisterRNG

(

)

[inline]

Definition at line 196 of file random_generator.h.

virtual vcg::math::MarsenneTwisterRNG::~MarsenneTwisterRNG

(

)

[inline, virtual]

Definition at line 201 of file random_generator.h.

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Member Function Documentation

unsigned int vcg::math::MarsenneTwisterRNG::generate

(

unsigned int

)

[inline, virtual]

Return a random number in the [0,0xffffffff] interval using the improved Marsenne Twister algorithm.

NOTE: Limit is not considered, the interval is fixed.

Implements vcg::math::RandomGenerator.

Definition at line 271 of file random_generator.h.

double vcg::math::MarsenneTwisterRNG::generate01

(

)

[inline, virtual]

Returns a random number in the [0,1) real interval using the improved Marsenne-Twister.

Implements vcg::math::RandomGenerator.

Definition at line 317 of file random_generator.h.

double vcg::math::MarsenneTwisterRNG::generate01closed

(

)

[inline, virtual]

Returns a random number in the [0,1] real interval using the improved Marsenne-Twister.

Implements vcg::math::RandomGenerator.

Definition at line 311 of file random_generator.h.

double vcg::math::MarsenneTwisterRNG::generate01open

(

)

[inline, virtual]

Generates a random number in the (0,1) real interval using the improved Marsenne-Twister.

Implements vcg::math::RandomGenerator.

Definition at line 323 of file random_generator.h.

void vcg::math::MarsenneTwisterRNG::initialize

(

unsigned int

seed

)

[inline, virtual]

(Re-)initialize with the given seed.

Implements vcg::math::RandomGenerator.

Definition at line 209 of file random_generator.h.

void vcg::math::MarsenneTwisterRNG::initializeByArray	(	unsigned int	init_key[],
		int	key_length
	)			[inline]

Initialize by an array with array-length.

init_key is the array for initializing keys key_length is its length

Definition at line 230 of file random_generator.h.

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Member Data Documentation

const unsigned int vcg::math::MarsenneTwisterRNG::LOWER_MASK = 0x7fffffffu [static, private]

Definition at line 183 of file random_generator.h.

const int vcg::math::MarsenneTwisterRNG::M = 397 [static, private]

Definition at line 180 of file random_generator.h.

const unsigned int vcg::math::MarsenneTwisterRNG::MATRIX_A = 0x9908b0dfu [static, private]

Definition at line 181 of file random_generator.h.

unsigned int vcg::math::MarsenneTwisterRNG::mt[N] [private]

Definition at line 189 of file random_generator.h.

int vcg::math::MarsenneTwisterRNG::mti [private]

Definition at line 190 of file random_generator.h.

const int vcg::math::MarsenneTwisterRNG::N = 624 [static, private]

Definition at line 179 of file random_generator.h.

const unsigned int vcg::math::MarsenneTwisterRNG::UPPER_MASK = 0x80000000u [static, private]

Definition at line 182 of file random_generator.h.

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The documentation for this class was generated from the following file:

• random_generator.h