RNG::MWC Class Reference

The multiple-with-carry random number generator by George Marsaglia (1999; internet posting). More...

#include <rng.h>

Inheritance diagram for RNG::MWC:

Collaboration diagram for RNG::MWC:

Public Member Functions
virtual std::string	to_string () const
	~MWC ()
rngint_t	value ()
void	vec_reseed (const std::vector< rngint_t > &seeds)
int	nseed ()
Public Member Functions inherited from RNG::UniformInteger
virtual	~UniformInteger ()
rngint_t	value_in_range (rngint_t range)
virtual double	realvalue (bool include_zero=true, bool include_one=true)
	Return a random value in the interval [0,1], (0,1], [0,1), or (0,1) More...
void	reseed ()
void	reseed (rngint_t)
void	reseed (rngint_t, rngint_t)
void	reseed (rngint_t, rngint_t, rngint_t)
void	reseed (rngint_t, rngint_t, rngint_t, rngint_t)

Static Public Member Functions
static MWC *	construct ()
static MWC *	construct (const std::vector< rngint_t > &)
static MWC *	construct (rngint_t zarg)
static MWC *	construct (rngint_t zarg, rngint_t warg)

Protected Member Functions
	MWC ()

Private Member Functions
rngint_t	znew ()
rngint_t	wnew ()

Private Attributes
rngint_t	z
rngint_t	w

Static Private Attributes
static const rngint_t	default_z
static const rngint_t	default_w

Detailed Description

The multiple-with-carry random number generator by George Marsaglia (1999; internet posting).

This RNG is fast and has a low memory footprint. Here is an excerpt from the posting describing this generator: The MWC generator concatenates two 16-bit multiply-with-carry generators, x(n)=36969x(n-1)+carry, y(n)=18000y(n-1)+carry mod 2¹⁶, has period about 2⁶⁰ and seems to pass all tests of randomness. A favorite stand-alone generator—faster than KISS, which contains it.

Definition at line 95 of file rng.h.

Constructor & Destructor Documentation

RNG::MWC::MWC ( )

protected

RNG::MWC::~MWC

(

)

Member Function Documentation

static MWC* RNG::MWC::construct ( )

static

static MWC* RNG::MWC::construct ( const std::vector< rngint_t > &  )

static

static MWC* RNG::MWC::construct ( rngint_t  zarg )

static

static MWC* RNG::MWC::construct ( rngint_t  zarg, rngint_t  warg  )

static

int RNG::MWC::nseed ( )

virtual

Implements RNG::UniformInteger.

virtual std::string RNG::MWC::to_string ( ) const

inlinevirtual

Definition at line 116 of file rng.h.

rngint_t RNG::MWC::value ( )

inlinevirtual

Implements RNG::UniformInteger.

Definition at line 135 of file rng.h.

References RNG::UniformInteger::nseed(), and RNG::UniformInteger::vec_reseed().

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void RNG::MWC::vec_reseed ( const std::vector< rngint_t > &  seeds )

virtual

Implements RNG::UniformInteger.

rngint_t RNG::MWC::wnew ( )

inlineprivate

Definition at line 107 of file rng.h.

rngint_t RNG::MWC::znew ( )

inlineprivate

Definition at line 102 of file rng.h.

Member Data Documentation

const rngint_t RNG::MWC::default_w

staticprivate

Definition at line 98 of file rng.h.

const rngint_t RNG::MWC::default_z

staticprivate

Definition at line 98 of file rng.h.

rngint_t RNG::MWC::w

private

Definition at line 99 of file rng.h.

rngint_t RNG::MWC::z

private

Definition at line 99 of file rng.h.

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

• sstmac/common/rng.h