arbitraryprecisioncalculation::IntenseM2P63LinearCongruenceRandomNumberGenerator Class Reference

This is a random number generator which uses linear congruences. It uses the modulus 2⁶³. More...

#include <random_number_generator.h>

Inheritance diagram for arbitraryprecisioncalculation::IntenseM2P63LinearCongruenceRandomNumberGenerator:

Public Member Functions
	IntenseM2P63LinearCongruenceRandomNumberGenerator (unsigned long long multiplier, unsigned long long adder, unsigned long long seed, int accept_bits)
	The constructor. More...
std::string	GetName ()
	Returns a string representation of this object. More...
void	LoadData (std::ifstream *)
	Loads data to reset the state of the random number generator to the state which was stored. More...
long long	RandomLongLong ()
	Creates a random long long value. More...
mpf_t *	RandomMpft ()
	Creates a random mpf_t value in the interval [0,1]. More...
void	StoreData (std::ofstream *)
	Stores the current state of this random number generator, such that it can completely restore the current state with this data. More...
Public Member Functions inherited from arbitraryprecisioncalculation::RandomNumberGenerator
virtual	~RandomNumberGenerator ()
	The destructor. More...

Detailed Description

This is a random number generator which uses linear congruences. It uses the modulus 2⁶³.

Constructor & Destructor Documentation

arbitraryprecisioncalculation::IntenseM2P63LinearCongruenceRandomNumberGenerator::IntenseM2P63LinearCongruenceRandomNumberGenerator	(	unsigned long long	multiplier,
		unsigned long long	adder,
		unsigned long long	seed,
		int	accept_bits
	)

The constructor.

Parameters

multiplier	The factor in the linear congruence.
adder	The additive value in the linear congruence.
seed	The initial seed of the random number generator.
accept_bits	The number of bits used by mpf_t generation from a call of function random long long.

Member Function Documentation

std::string arbitraryprecisioncalculation::IntenseM2P63LinearCongruenceRandomNumberGenerator::GetName ( )

virtual

Returns a string representation of this object.

Returns

The name of the object.

Implements arbitraryprecisioncalculation::RandomNumberGenerator.

void arbitraryprecisioncalculation::IntenseM2P63LinearCongruenceRandomNumberGenerator::LoadData ( std::ifstream *  input_stream )

virtual

Loads data to reset the state of the random number generator to the state which was stored.

Parameters

input_stream

The stream which contains the data about the state of the random number generator.

Implements arbitraryprecisioncalculation::RandomNumberGenerator.

long long arbitraryprecisioncalculation::IntenseM2P63LinearCongruenceRandomNumberGenerator::RandomLongLong ( )

virtual

Creates a random long long value.

Calculates the next random by the equation (adder + multiplier · S) mod 2⁶³, where S is the previous random value or the initial seed (if it is the first call of this function) and mod means the modulo operation.

Returns

The random value.

Implements arbitraryprecisioncalculation::RandomNumberGenerator.

mpf_t* arbitraryprecisioncalculation::IntenseM2P63LinearCongruenceRandomNumberGenerator::RandomMpft ( )

virtual

Creates a random mpf_t value in the interval [0,1].

Repeatedly calls random long long function until all bits of result value are randomly initialized. Each time only the specified number of bits are used.

Returns

The random value.

Implements arbitraryprecisioncalculation::RandomNumberGenerator.

void arbitraryprecisioncalculation::IntenseM2P63LinearCongruenceRandomNumberGenerator::StoreData ( std::ofstream *  output_stream )

virtual

Stores the current state of this random number generator, such that it can completely restore the current state with this data.

Parameters

output_stream

The output stream where the state should be stored.

Implements arbitraryprecisioncalculation::RandomNumberGenerator.

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

• src/arbitrary_precision_calculation/random_number_generator.h