bpp::Uniform01K Class Reference

A uniform random number generator. More...

#include <Bpp/Numeric/Random/Uniform01K.h>

Inheritance diagram for bpp::Uniform01K:

Collaboration diagram for bpp::Uniform01K:

Public Member Functions
	Uniform01K (long seed)
	Create a Random Number Generator. More...
virtual	~Uniform01K ()
	Destroy the generator. More...
void	setSeed (long seed)
	Set the seed for a new set of random numbers. More...
double	drawNumber () const
	Get a random number between 0.0 and 1.0 (exclusive of the end point values). More...

Private Attributes
long	_tab [56]
unsigned int	_it1
unsigned int	_it2

Static Private Attributes
static const long	MAXNUMBER = 1000000000
static const long	ZERO = 0
static const long	MODSEED = 256434901

Detailed Description

A uniform random number generator.

This is a uniform generator which draw double between 0 and 1 excluding the end points. This generator is based on an algorithm described by D.E. Knuth, 1981, "Seminumerical Algorithms" 2nd ed., vol.2 of "The Art of Computer Programming" (Reading, MA: Addison-Wesley), §§3.2-3.3.

The algorithm used here is the one described in "Numerical Recipes in C".

Definition at line 59 of file Uniform01K.h.

Constructor & Destructor Documentation

Uniform01K()

Uniform01K::Uniform01K

(

long

seed

)

Create a Random Number Generator.

Parameters

seed	The seed for the random numbers.

Definition at line 52 of file Uniform01K.cpp.

References setSeed().

~Uniform01K()

Uniform01K::~Uniform01K ( )

virtual

Destroy the generator.

Definition at line 59 of file Uniform01K.cpp.

Member Function Documentation

drawNumber()

double Uniform01K::drawNumber ( ) const

virtual

Get a random number between 0.0 and 1.0 (exclusive of the end point values).

Implements bpp::RandomFactory.

Definition at line 93 of file Uniform01K.cpp.

References _it1, _it2, _tab, MAXNUMBER, and ZERO.

setSeed()

void Uniform01K::setSeed ( long  seed )

virtual

Set the seed for a new set of random numbers.

Implements bpp::RandomFactory.

Definition at line 63 of file Uniform01K.cpp.

References _it1, _it2, _tab, bpp::NumTools::abs(), MAXNUMBER, MODSEED, and ZERO.

Referenced by Uniform01K().

Member Data Documentation

_it1

unsigned int bpp::Uniform01K::_it1

mutableprivate

Definition at line 90 of file Uniform01K.h.

Referenced by drawNumber(), and setSeed().

_it2

unsigned int bpp::Uniform01K::_it2

mutableprivate

Definition at line 91 of file Uniform01K.h.

Referenced by drawNumber(), and setSeed().

_tab

long bpp::Uniform01K::_tab[56]

mutableprivate

Definition at line 89 of file Uniform01K.h.

Referenced by drawNumber(), and setSeed().

MAXNUMBER

const long Uniform01K::MAXNUMBER = 1000000000

staticprivate

Definition at line 86 of file Uniform01K.h.

Referenced by drawNumber(), and setSeed().

MODSEED

const long Uniform01K::MODSEED = 256434901

staticprivate

Definition at line 88 of file Uniform01K.h.

Referenced by setSeed().

ZERO

const long Uniform01K::ZERO = 0

staticprivate

Definition at line 87 of file Uniform01K.h.

Referenced by drawNumber(), and setSeed().

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

• Bpp/Numeric/Random/Uniform01K.h
• Bpp/Numeric/Random/Uniform01K.cpp