DUNE::Math::Random::DRand48 Class Reference

Detailed Description

The popular lightweight DRand48 PRNG used for instance in java.util.Random and provided by a number of SVID compatible OSes through lrand48()/drand48().

For comparison DRand48.random() provides the same number sequences as lrand48() in POSIX systems when seeding is done by srand48().

Public Member Functions
	DRand48 ()
	DRand48 (int32_t seed_value)
	~DRand48 ()
int32_t	random (void)
void	seed (int32_t value)
Public Member Functions inherited from DUNE::Math::Random::Generator
virtual	~Generator ()
virtual double	uniform (void)
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::DRand48::DRand48

(

void

)

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

DUNE::Math::Random::DRand48::DRand48

(

int32_t

seed_value

)

References seed().

DUNE::Math::Random::DRand48::~DRand48

(

void

)

Member Function Documentation

int32_t DUNE::Math::Random::DRand48::random ( void  )

virtual

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

Returns

generated number.

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

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

void DUNE::Math::Random::DRand48::seed ( int32_t  value )

virtual

Re-initialize generator with given seed.

Parameters

value

value for seed.

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

Referenced by DRand48().

Collaboration diagram for DUNE::Math::Random::DRand48: