DUNE::Math::Random::MT19937 Class Reference

Detailed Description

Mersenne-Twister 19937 RNG - used in Matlab 7.4 onwards.

The 19937 number relates to its period (2^19937 - 1). See http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html

The implementation is a slight adjustment of code by Takuji Nishimura and Makoto Matsumoto.

Public Member Functions
	MT19937 (void)
	MT19937 (int32_t seed)
	~MT19937 (void)
int32_t	random (void)
double	uniform (void)
void	seed (int32_t)
Public Member Functions inherited from DUNE::Math::Random::Generator
virtual	~Generator ()
double	uniform (double a, double b)
double	gaussian (void)
double	gaussian (double mu, double sigma)
void	ballU (double radius, double *x, double *y)
void	ballG (double sigma, double *x, double *y)

Additional Inherited Members
Static Public Member Functions inherited from DUNE::Math::Random::Generator
static int32_t	arbitrarySeed (void)
Static Public Attributes inherited from DUNE::Math::Random::Generator
static const int32_t	c_max_random

Constructor & Destructor Documentation

DUNE::Math::Random::MT19937::MT19937

(

void

)

References DUNE::Math::Random::Generator::arbitrarySeed(), and seed().

DUNE::Math::Random::MT19937::MT19937

(

int32_t

seed

)

References seed().

DUNE::Math::Random::MT19937::~MT19937

(

void

)

Member Function Documentation

int32_t DUNE::Math::Random::MT19937::random ( void  )

virtual

Generate a 32-bit signed integer, uniformly distributed in [0,c_max_random].

Returns

generated number.

Implements DUNE::Math::Random::Generator.

void DUNE::Math::Random::MT19937::seed ( int32_t  value )

virtual

Re-initialize generator with given seed.

Parameters

value

value for seed.

Implements DUNE::Math::Random::Generator.

References DUNE::Math::Random::Generator::c_max_random.

Referenced by MT19937().

double DUNE::Math::Random::MT19937::uniform ( void  )

virtual

Generate double-precision floating point number with uniform distribution in [0,1].

Default implementation returns value of random()/c_max_random.

Reimplemented from DUNE::Math::Random::Generator.

Collaboration diagram for DUNE::Math::Random::MT19937: