The Random Number Generator (RNG) that returns a constant. More...

#include "random-variable-stream.h"

Inheritance diagram for ns3::ConstantRandomVariable:

Collaboration diagram for ns3::ConstantRandomVariable:

Public Member Functions
	ConstantRandomVariable ()
	Creates a constant RNG with the default constant value.

double	GetConstant () const
	Get the constant value returned by this RNG stream.

virtual uint32_t	GetInteger ()
	Get the next random value drawn from the distribution.

uint32_t	GetInteger (uint32_t constant)
	Get the next random value drawn from the distribution.

double	GetValue () override
	Get the next random value drawn from the distribution.

double	GetValue (double constant)
	Get the next random value drawn from the distribution.

Public Member Functions inherited from ns3::RandomVariableStream
	RandomVariableStream ()
	Default constructor.

	RandomVariableStream (const RandomVariableStream &)=delete

	~RandomVariableStream () override
	Destructor.

int64_t	GetStream () const
	Returns the stream number for the RngStream.

bool	IsAntithetic () const
	Check if antithetic values will be generated.

RandomVariableStream &	operator= (const RandomVariableStream &)=delete

void	SetAntithetic (bool isAntithetic)
	Specify whether antithetic values should be generated.

void	SetStream (int64_t stream)
	Specifies the stream number for the RngStream.

Public Member Functions inherited from ns3::Object
	Object ()
	Constructor.

	~Object () override
	Destructor.

void	AggregateObject (Ptr< Object > other)
	Aggregate two Objects together.

void	Dispose ()
	Dispose of this Object.

AggregateIterator	GetAggregateIterator () const
	Get an iterator to the Objects aggregated to this one.

TypeId	GetInstanceTypeId () const override
	Get the most derived TypeId for this Object.

template<typename T >
Ptr< T >	GetObject () const
	Get a pointer to the requested aggregated Object.

template<>
Ptr< Object >	GetObject () const
	Specialization of () for objects of type ns3::Object.

template<typename T >
Ptr< T >	GetObject (TypeId tid) const
	Get a pointer to the requested aggregated Object by TypeId.

template<>
Ptr< Object >	GetObject (TypeId tid) const
	Specialization of (TypeId tid) for objects of type ns3::Object.

void	Initialize ()
	Invoke DoInitialize on all Objects aggregated to this one.

bool	IsInitialized () const
	Check if the object has been initialized.

void	UnidirectionalAggregateObject (Ptr< Object > other)
	Aggregate an Object to another Object.

Public Member Functions inherited from ns3::SimpleRefCount< Object, ObjectBase, ObjectDeleter >
	SimpleRefCount ()
	Default constructor.

	SimpleRefCount (const SimpleRefCount &o)
	Copy constructor.

uint32_t	GetReferenceCount () const
	Get the reference count of the object.

SimpleRefCount &	operator= (const SimpleRefCount &o)
	Assignment operator.

void	Ref () const
	Increment the reference count.

void	Unref () const
	Decrement the reference count.

Public Member Functions inherited from ns3::ObjectBase
virtual	~ObjectBase ()
	Virtual destructor.

void	GetAttribute (std::string name, AttributeValue &value, bool permissive=false) const
	Get the value of an attribute, raising fatal errors if unsuccessful.

bool	GetAttributeFailSafe (std::string name, AttributeValue &value) const
	Get the value of an attribute without raising errors.

void	SetAttribute (std::string name, const AttributeValue &value)
	Set a single attribute, raising fatal errors if unsuccessful.

bool	SetAttributeFailSafe (std::string name, const AttributeValue &value)
	Set a single attribute without raising errors.

bool	TraceConnect (std::string name, std::string context, const CallbackBase &cb)
	Connect a TraceSource to a Callback with a context.

bool	TraceConnectWithoutContext (std::string name, const CallbackBase &cb)
	Connect a TraceSource to a Callback without a context.

bool	TraceDisconnect (std::string name, std::string context, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected with a context.

bool	TraceDisconnectWithoutContext (std::string name, const CallbackBase &cb)
	Disconnect from a TraceSource a Callback previously connected without a context.

Static Public Member Functions
static TypeId	GetTypeId ()
	Register this type.

Static Public Member Functions inherited from ns3::RandomVariableStream
static TypeId	GetTypeId ()
	Register this type.

Static Public Member Functions inherited from ns3::Object
static TypeId	GetTypeId ()
	Register this type.

Static Public Member Functions inherited from ns3::ObjectBase
static TypeId	GetTypeId ()
	Get the type ID.

Private Attributes
double	m_constant
	The constant value returned by this RNG stream.

Additional Inherited Members
Protected Member Functions inherited from ns3::RandomVariableStream
RngStream *	Peek () const
	Get the pointer to the underlying RngStream.

Protected Member Functions inherited from ns3::Object
	Object (const Object &o)
	Copy an Object.

virtual void	DoDispose ()
	Destructor implementation.

virtual void	DoInitialize ()
	Initialize() implementation.

virtual void	NotifyNewAggregate ()
	Notify all Objects aggregated to this one of a new Object being aggregated.

Protected Member Functions inherited from ns3::ObjectBase
void	ConstructSelf (const AttributeConstructionList &attributes)
	Complete construction of ObjectBase; invoked by derived classes.

virtual void	NotifyConstructionCompleted ()
	Notifier called once the ObjectBase is fully constructed.

Related Symbols inherited from ns3::ObjectBase
static TypeId	GetObjectIid ()
	Ensure the TypeId for ObjectBase gets fully configured to anchor the inheritance tree properly.

Detailed Description

The Random Number Generator (RNG) that returns a constant.

This RNG returns the same Constant value for every sample.

This distribution has mean equal to the Constant and zero variance.

Antithetic Values.

This RNG ignores the antithetic setting.

Definition at line 297 of file random-variable-stream.h.

Constructor & Destructor Documentation

◆ ConstantRandomVariable()

ns3::ConstantRandomVariable::ConstantRandomVariable ( )

Creates a constant RNG with the default constant value.

Definition at line 238 of file random-variable-stream.cc.

References NS_LOG_FUNCTION.

Member Function Documentation

◆ GetConstant()

double ns3::ConstantRandomVariable::GetConstant ( ) const

Get the constant value returned by this RNG stream.

Returns: The constant value.

Definition at line 245 of file random-variable-stream.cc.

References m_constant, and NS_LOG_FUNCTION.

◆ GetInteger() [1/2]

uint32_t ns3::RandomVariableStream::GetInteger ( )

virtual

Get the next random value drawn from the distribution.

Returns: A random value.

Reimplemented from ns3::RandomVariableStream.

Definition at line 144 of file random-variable-stream.cc.

◆ GetInteger() [2/2]

uint32_t ns3::ConstantRandomVariable::GetInteger ( uint32_t constant )

Get the next random value drawn from the distribution.

Returns: A random value.

Parameters

[in] constant The value to return.

Definition at line 259 of file random-variable-stream.cc.

References ns3::RandomVariableStream::GetStream(), and NS_LOG_DEBUG.

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◆ GetTypeId()

TypeId ns3::ConstantRandomVariable::GetTypeId ( )

static

Register this type.

Returns: The object TypeId.

Definition at line 224 of file random-variable-stream.cc.

References m_constant, ns3::MakeDoubleAccessor(), ns3::MakeDoubleChecker(), and ns3::TypeId::SetParent().

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◆ GetValue() [1/2]

double ns3::ConstantRandomVariable::GetValue ( )

overridevirtual

Get the next random value drawn from the distribution.

Returns: A random value.

Implements ns3::RandomVariableStream.

Definition at line 266 of file random-variable-stream.cc.

References GetValue(), and m_constant.

Referenced by GetValue().

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◆ GetValue() [2/2]

double ns3::ConstantRandomVariable::GetValue ( double constant )

Get the next random value drawn from the distribution.

Returns: A random value.

Parameters

[in] constant The value to return.

Definition at line 252 of file random-variable-stream.cc.

References ns3::RandomVariableStream::GetStream(), and NS_LOG_DEBUG.

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Member Data Documentation

◆ m_constant

double ns3::ConstantRandomVariable::m_constant

private

The constant value returned by this RNG stream.

Definition at line 336 of file random-variable-stream.h.

Referenced by GetConstant(), GetTypeId(), and GetValue().

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

src/core/model/random-variable-stream.h
src/core/model/random-variable-stream.cc

Public Member Functions

Static Public Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ConstantRandomVariable()

Member Function Documentation

◆ GetConstant()

◆ GetInteger() [1/2]

◆ GetInteger() [2/2]

◆ GetTypeId()

◆ GetValue() [1/2]

◆ GetValue() [2/2]

Member Data Documentation

◆ m_constant