Random number generator. More...

Classes
class	gaussianGeneratorOp
	A generator class returning a gaussian distributed random number. More...

class	uniformGeneratorOp

Public Member Functions
	Random (const label seedValue=defaultSeed)
	Construct with seed value. More...

	Random (const Random &rnd, const bool reset)
	Copy construct with possible reset of seed. More...

label	seed () const
	The initial random number seed that was used. More...

void	reset (const label seedValue)
	Reset the random number generator seed. More...

int	bit ()
	Return a random bit. More...

template<class Type >
Type	sample01 ()
	Return a sample whose components lie in the range [0,1]. More...

template<class Type >
Type	GaussNormal ()

template<class Type >
Type	position (const Type &start, const Type &end)
	Return a sample on the interval [start,end]. More...

template<class Type >
void	randomise01 (Type &value)
	Randomise value in the range [0,1]. More...

template<class Type >
void	shuffle (UList< Type > &values)
	Shuffle the values in the list. More...

template<class Type >
Type	globalSample01 ()
	Return a sample whose components lie in the range [0,1]. More...

template<class Type >
Type	globalGaussNormal ()

template<class Type >
Type	globalPosition (const Type &start, const Type &end)
	Return a sample on the interval [start,end]. More...

template<class Type >
void	globalRandomise01 (Type &value)
	Randomise value in the range 0-1. More...

template<>
Foam::scalar	sample01 ()

template<>
Foam::label	sample01 ()

template<>
Foam::scalar	GaussNormal ()

template<>
Foam::label	GaussNormal ()

template<>
Foam::scalar	position (const scalar &start, const scalar &end)

template<>
Foam::label	position (const label &start, const label &end)

template<>
Foam::scalar	globalSample01 ()

template<>
Foam::label	globalSample01 ()

template<>
Foam::scalar	globalGaussNormal ()

template<>
Foam::label	globalGaussNormal ()

template<>
Foam::scalar	globalPosition (const scalar &start, const scalar &end)

template<>
Foam::label	globalPosition (const label &start, const label &end)

template<>
scalar	sample01 ()

template<>
label	sample01 ()

template<>
scalar	GaussNormal ()

template<>
label	GaussNormal ()

template<>
scalar	position (const scalar &start, const scalar &end)

template<>
label	position (const label &start, const label &end)

template<>
scalar	globalSample01 ()

template<>
label	globalSample01 ()

template<>
scalar	globalGaussNormal ()

template<>
label	globalGaussNormal ()

template<>
scalar	globalPosition (const scalar &start, const scalar &end)

template<>
label	globalPosition (const label &start, const label &end)

Static Public Attributes
static constexpr label	defaultSeed = 123456
	The default seed value (name may change in the future) More...

Detailed Description

Random number generator.

Source files

Definition at line 59 of file Random.H.

Constructor & Destructor Documentation

◆ Random() [1/2]

Random ( const label seedValue = defaultSeed )

explicit

Construct with seed value.

Definition at line 33 of file Random.C.

◆ Random() [2/2]

Random	(	const Random &	rnd,
		const bool	reset
	)

Copy construct with possible reset of seed.

Definition at line 43 of file Random.C.

References Random::reset(), and Rand48::seed().

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Member Function Documentation

◆ seed()

Foam::label seed ( ) const

inline

The initial random number seed that was used.

Definition at line 44 of file RandomI.H.

◆ reset()

void reset ( const label seedValue )

inline

Reset the random number generator seed.

Definition at line 50 of file RandomI.H.

Referenced by Random::Random().

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◆ bit()

int bit ( )

inline

Return a random bit.

Definition at line 38 of file RandomI.H.

◆ sample01() [1/5]

Type sample01 ( )

Return a sample whose components lie in the range [0,1].

Definition at line 36 of file RandomTemplates.C.

Referenced by BrownianMotionForce< CloudType >::calcCoupled(), ConeInjection< CloudType >::ConeInjection(), treeBoundBox::extend(), InflationInjection< CloudType >::parcelsToInject(), patchInjectionBase::setPositionAndCell(), ConeInjection< CloudType >::setProperties(), StochasticDispersionRAS< CloudType >::update(), and SHF< CloudType >::update().

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◆ GaussNormal() [1/5]

Type GaussNormal ( )

Return a sample whose components are normally distributed with zero mean and unity variance N(0,1)

Definition at line 49 of file RandomTemplates.C.

Referenced by BrownianMotionForce< CloudType >::calcCoupled(), StochasticDispersionRAS< CloudType >::update(), and GradientDispersionRAS< CloudType >::update().

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◆ position() [1/5]

Type position	(	const Type &	start,
		const Type &	end
	)

Return a sample on the interval [start,end].

Definition at line 62 of file RandomTemplates.C.

References stdFoam::end().

Referenced by InflationInjection< CloudType >::parcelsToInject(), randomRenumber::renumber(), massRosinRammler::sample(), patchInjectionBase::setPositionAndCell(), ReactingLookupTableInjection< CloudType >::setPositionAndCell(), ThermoLookupTableInjection< CloudType >::setPositionAndCell(), ReactingMultiphaseLookupTableInjection< CloudType >::setPositionAndCell(), KinematicLookupTableInjection< CloudType >::setPositionAndCell(), and ConeInjection< CloudType >::setProperties().

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◆ randomise01()

void randomise01 ( Type & value )

Randomise value in the range [0,1].

Definition at line 76 of file RandomTemplates.C.

◆ shuffle()

void shuffle ( UList< Type > & values )

Shuffle the values in the list.

Definition at line 83 of file RandomTemplates.C.

References Foam::Swap(), and Foam::HashTableOps::values().

Referenced by eddy::eddy(), and ConeInjection< CloudType >::setPositionAndCell().

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◆ globalSample01() [1/5]

Type globalSample01 ( )

Return a sample whose components lie in the range [0,1].

Definition at line 94 of file RandomTemplates.C.

References UPstream::master(), and Pstream::scatter().

Referenced by patchInjectionBase::setPositionAndCell().

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◆ globalGaussNormal() [1/5]

Type globalGaussNormal ( )

Return a sample whose components are normally distributed with zero mean and unity variance N(0,1)

Definition at line 110 of file RandomTemplates.C.

References UPstream::master(), and Pstream::scatter().

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◆ globalPosition() [1/5]

Type globalPosition	(	const Type &	start,
		const Type &	end
	)

Return a sample on the interval [start,end].

Definition at line 126 of file RandomTemplates.C.

References stdFoam::end(), UPstream::master(), and Pstream::scatter().

Referenced by InjectedParticleDistributionInjection< CloudType >::initialise(), PatchFlowRateInjection< CloudType >::parcelsToInject(), PatchInjection< CloudType >::parcelsToInject(), and InjectedParticleDistributionInjection< CloudType >::setPositionAndCell().

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◆ globalRandomise01()

void globalRandomise01 ( Type & value )

Randomise value in the range 0-1.

Definition at line 142 of file RandomTemplates.C.

References UPstream::master(), and Pstream::scatter().

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◆ sample01() [2/5]

Foam::scalar sample01 ( )

Definition at line 59 of file Random.C.

◆ sample01() [3/5]

Foam::label sample01 ( )

Definition at line 66 of file Random.C.

◆ GaussNormal() [2/5]

Foam::scalar GaussNormal ( )

Definition at line 73 of file Random.C.

References Foam::log(), Foam::sqr(), and Foam::sqrt().

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◆ GaussNormal() [3/5]

Foam::label GaussNormal ( )

Definition at line 102 of file Random.C.

◆ position() [2/5]

Foam::scalar position	(	const scalar &	start,
		const scalar &	end
	)

Definition at line 110 of file Random.C.

References stdFoam::end().

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◆ position() [3/5]

Foam::label position	(	const label &	start,
		const label &	end
	)

Definition at line 120 of file Random.C.

References Foam::abort(), stdFoam::end(), Foam::FatalError, FatalErrorInFunction, Foam::min(), and Foam::nl.

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◆ globalSample01() [2/5]

Foam::scalar globalSample01 ( )

Definition at line 144 of file Random.C.

References UPstream::master(), and Pstream::scatter().

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◆ globalSample01() [3/5]

Foam::label globalSample01 ( )

Definition at line 160 of file Random.C.

References Foam::labelMin, UPstream::master(), and Pstream::scatter().

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◆ globalGaussNormal() [2/5]

Foam::scalar globalGaussNormal ( )

Definition at line 176 of file Random.C.

References UPstream::master(), and Pstream::scatter().

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◆ globalGaussNormal() [3/5]

Foam::label globalGaussNormal ( )

Definition at line 192 of file Random.C.

References Foam::labelMin, UPstream::master(), and Pstream::scatter().

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◆ globalPosition() [2/5]

Foam::scalar globalPosition	(	const scalar &	start,
		const scalar &	end
	)

Definition at line 209 of file Random.C.

References stdFoam::end(), UPstream::master(), and Pstream::scatter().

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◆ globalPosition() [3/5]

Foam::label globalPosition	(	const label &	start,
		const label &	end
	)

Definition at line 229 of file Random.C.

References stdFoam::end(), Foam::labelMin, UPstream::master(), and Pstream::scatter().

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◆ sample01() [4/5]

scalar sample01 ( )

◆ sample01() [5/5]

label sample01 ( )

◆ GaussNormal() [4/5]

scalar GaussNormal ( )

◆ GaussNormal() [5/5]

label GaussNormal ( )

◆ position() [4/5]

scalar position	(	const scalar &	start,
		const scalar &	end
	)

◆ position() [5/5]

label position	(	const label &	start,
		const label &	end
	)

◆ globalSample01() [4/5]

scalar globalSample01 ( )

◆ globalSample01() [5/5]

label globalSample01 ( )

◆ globalGaussNormal() [4/5]

scalar globalGaussNormal ( )

◆ globalGaussNormal() [5/5]

label globalGaussNormal ( )

◆ globalPosition() [4/5]

scalar globalPosition	(	const scalar &	start,
		const scalar &	end
	)

◆ globalPosition() [5/5]

label globalPosition	(	const label &	start,
		const label &	end
	)

Member Data Documentation

◆ defaultSeed

constexpr label defaultSeed = 123456

staticconstexpr

The default seed value (name may change in the future)

Definition at line 95 of file Random.H.

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

src/OpenFOAM/primitives/random/Random/Random.H
src/OpenFOAM/primitives/random/Random/Random.C
src/OpenFOAM/primitives/random/Random/RandomI.H
src/OpenFOAM/primitives/random/Random/RandomTemplates.C

Classes

Public Member Functions

Static Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Random() [1/2]

◆ Random() [2/2]

Member Function Documentation

◆ seed()

◆ reset()

◆ bit()

◆ sample01() [1/5]

◆ GaussNormal() [1/5]

◆ position() [1/5]

◆ randomise01()

◆ shuffle()

◆ globalSample01() [1/5]

◆ globalGaussNormal() [1/5]

◆ globalPosition() [1/5]

◆ globalRandomise01()

◆ sample01() [2/5]

◆ sample01() [3/5]

◆ GaussNormal() [2/5]

◆ GaussNormal() [3/5]

◆ position() [2/5]

◆ position() [3/5]

◆ globalSample01() [2/5]

◆ globalSample01() [3/5]

◆ globalGaussNormal() [2/5]

◆ globalGaussNormal() [3/5]

◆ globalPosition() [2/5]

◆ globalPosition() [3/5]

◆ sample01() [4/5]

◆ sample01() [5/5]

◆ GaussNormal() [4/5]

◆ GaussNormal() [5/5]

◆ position() [4/5]

◆ position() [5/5]

◆ globalSample01() [4/5]

◆ globalSample01() [5/5]

◆ globalGaussNormal() [4/5]

◆ globalGaussNormal() [5/5]

◆ globalPosition() [4/5]

◆ globalPosition() [5/5]

Member Data Documentation

◆ defaultSeed