hu::varadiistvan::scpl::PseudoRandom Class Reference

#include <PseudoRandom.h>

Public Member Functions
	PseudoRandom ()
	PseudoRandom (uint32_t seed)
uint32_t	next ()
unsigned	nextUnsigned (unsigned to=MAX, unsigned from=0)
double	nextDouble (double to=1.0, double from=0.0)

Static Public Attributes
static const uint32_t	MAX = (1<<31)

Private Member Functions
void	initialize (uint32_t seed)

Private Attributes
uint32_t	vector [vectorSize]
int	nextIndex

Static Private Attributes
static const size_t	vectorSize = 34
static const size_t	numDiscarded = 344

Detailed Description

A pseudo-random number generator. The algorithm is the same as described in http://www.mathstat.dal.ca/~selinger/random, i.e. the GNU libc random number generator. It is reimplemented, because Windows does not provide a thread-safe, reentrable pseudo-random number generation facility, so it should have been implemented for Win32 anyway.

Definition at line 52 of file PseudoRandom.h.

Constructor & Destructor Documentation

PseudoRandom() [1/2]

hu::varadiistvan::scpl::PseudoRandom::PseudoRandom ( )

inline

Construct the random number generator with a default seed (taken by calling time()).

Definition at line 121 of file PseudoRandom.h.

PseudoRandom() [2/2]

hu::varadiistvan::scpl::PseudoRandom::PseudoRandom ( uint32_t  seed )

inline

Construct the random number generator with the given seed.

Definition at line 128 of file PseudoRandom.h.

Member Function Documentation

initialize()

void PseudoRandom::initialize ( uint32_t  seed )

private

Initialize the random number generator with the given seed.

Definition at line 39 of file PseudoRandom.cc.

next()

uint32_t hu::varadiistvan::scpl::PseudoRandom::next ( )

inline

Get the next raw value.

Definition at line 135 of file PseudoRandom.h.

nextDouble()

double hu::varadiistvan::scpl::PseudoRandom::nextDouble ( double  to = 1.0, double  from = 0.0  )

inline

Get the next random number as a double value between [from, to].

Definition at line 158 of file PseudoRandom.h.

nextUnsigned()

unsigned hu::varadiistvan::scpl::PseudoRandom::nextUnsigned ( unsigned  to = MAX, unsigned  from = 0  )

inline

Get the next random number as an unsigned value between [from, to].

Definition at line 150 of file PseudoRandom.h.

Member Data Documentation

MAX

const uint32_t hu::varadiistvan::scpl::PseudoRandom::MAX = (1<<31)

static

The largest random number generated in the unconverted sequence.

Definition at line 59 of file PseudoRandom.h.

nextIndex

int hu::varadiistvan::scpl::PseudoRandom::nextIndex

private

The index of the next random number.

Definition at line 80 of file PseudoRandom.h.

numDiscarded

const size_t hu::varadiistvan::scpl::PseudoRandom::numDiscarded = 344

staticprivate

The number of random numbers thrown away.

Definition at line 70 of file PseudoRandom.h.

vector

uint32_t hu::varadiistvan::scpl::PseudoRandom::vector[vectorSize]

private

The vector of random numbers used to generate the next one.

Definition at line 75 of file PseudoRandom.h.

vectorSize

const size_t hu::varadiistvan::scpl::PseudoRandom::vectorSize = 34

staticprivate

The size of the vector.

Definition at line 65 of file PseudoRandom.h.

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

• PseudoRandom.h
• PseudoRandom.cc