The marsaglia random number generator. More...

#include "murl_util_rng.h"

Inheritance diagram for Murl::Util::Marsaglia:

Public Member Functions
	Marsaglia ()
	The default constructor. More...

	Marsaglia (UInt32 seed)
	Constructor taking a seed value. More...

void	Seed (UInt32 seed) override
	Seed the random number generator. More...

UInt32	Rand () override
	Get a random number in the full UInt32 range. More...

Public Member Functions inherited from Murl::Util::Rng
virtual	~Rng ()=default
	The destructor.

Bool	RandBool ()
	Get a random Bool value. More...

UInt32	RandUInt (UInt32 from, UInt32 to)
	Get a random UInt32 value within a specified range. More...

SInt32	RandSInt (SInt32 from, SInt32 to)
	Get a random SInt32 value within a specified range. More...

Real	RandReal (Real from, Real to)
	Get a random Real value within a specified range. More...

Double	RandDouble (Double from, Double to)
	Get a random Double value within a specified range. More...

SInt32	Draw (const UInt32Array &distribution)
	Draw an index from a distribution array. More...

SInt32	DrawNoReplacement (UInt32Array &distribution)
	Draw an index from a distribution array with no replacement. More...

SInt32	DrawNoReplacement (UInt32Array &distribution, UInt32 decrement)
	Draw an index from a distribution array with no replacement. More...

Additional Inherited Members
Protected Member Functions inherited from Murl::Util::Rng
	Rng ()=default
	The default constructor.

Detailed Description

The marsaglia random number generator.

The marsaglia generator has low quality with a period of 2^32 only, but calculates fast results and uses 32 bit state memory only. The better choice with an acceptable overhead is the TT800 or Well1024 class.

Constructor & Destructor Documentation

◆ Marsaglia() [1/2]

Murl::Util::Marsaglia::Marsaglia ( )

The default constructor.

Seed() the random number generator with the current time nanoseconds fraction.

◆ Marsaglia() [2/2]

Murl::Util::Marsaglia::Marsaglia ( UInt32 seed )

Constructor taking a seed value.

Parameters

seed	The seed value.

Member Function Documentation

◆ Seed()

void Murl::Util::Marsaglia::Seed ( UInt32 seed )

overridevirtual

Seed the random number generator.

Parameters

seed	The seed value.

Implements Murl::Util::Rng.

◆ Rand()

UInt32 Murl::Util::Marsaglia::Rand ( )

overridevirtual

Get a random number in the full UInt32 range.

Returns: The random number.