SST::RNG::MarsagliaRNG Class Reference

Implements a random number generator using the Marsaglia method. More...

#include "sst/core/rng/marsaglia.h"

Inheritance diagram for SST::RNG::MarsagliaRNG:

Public Member Functions
	MarsagliaRNG (unsigned int initial_z, unsigned int initial_w)
	Creates a new Marsaglia RNG using the initial seeds.
	MarsagliaRNG ()
	Creates a new Marsaglia RNG using random initial seeds (which are read from the system clock).
void	restart (unsigned int new_z, unsigned int new_w)
	Restart the random number generator with new seeds.
double	nextUniform ()
	Generates the next random number as a double in the range 0 to 1.
uint32_t	generateNextUInt32 ()
	Generates the next random number as an unsigned 32-bit integer.
uint64_t	generateNextUInt64 ()
	Generates the next random number as an unsigned 64-bit integer.
int64_t	generateNextInt64 ()
	Generates the next number as a signed 64-bit integer.
int32_t	generateNextInt32 ()
	Generates the next number as a signed 32-bit integer.

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Detailed Description

Implements a random number generator using the Marsaglia method.

This method is computationally cheap and provides a reasonable distribution of random numbers. If you need additional strength in the random numbers you may want to consider the Mersenne RNG.

For more information see the Multiply-with-carry Random Number Generator article at Wikipedia (http://en.wikipedia.org/wiki/Multiply-with-carry).

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Constructor & Destructor Documentation

MarsagliaRNG::MarsagliaRNG	(	unsigned int	initial_z,
		unsigned int	initial_w
	)

Creates a new Marsaglia RNG using the initial seeds.

Parameters:

[in]	initial_z	One of the random seed pairs
[in]	initial_w	One of the random seed pairs.

MarsagliaRNG::MarsagliaRNG

(

)

Creates a new Marsaglia RNG using random initial seeds (which are read from the system clock).

Note that these will create variation between runs and between platforms.

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Member Function Documentation

void MarsagliaRNG::restart	(	unsigned int	new_z,
		unsigned int	new_w
	)

Restart the random number generator with new seeds.

Parameters:

[in]	new_z	A new Z-seed
[in]	new_w	A new W-seed

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

• sst/core/rng/marsaglia.h
• sst/core/rng/marsaglia.cc