stdair::RandomGeneration Struct Reference

Class holding a random generator. More...

#include <stdair/basic/RandomGeneration.hpp>

Inheritance diagram for stdair::RandomGeneration:

Public Member Functions
RealNumber_T	generateUniform01 ()
RealNumber_T	operator() ()
RealNumber_T	generateUniform (const RealNumber_T &, const RealNumber_T &)
RealNumber_T	generateNormal (const RealNumber_T &, const RealNumber_T &)
RealNumber_T	generateExponential (const RealNumber_T &)
BaseGenerator_T &	getBaseGenerator ()
const std::string	describe () const
	RandomGeneration (const RandomSeed_T &)
	RandomGeneration ()
	~RandomGeneration ()
void	init (const RandomSeed_T &)
void	toStream (std::ostream &ioOut) const
virtual void	fromStream (std::istream &ioIn)

Public Attributes
BaseGenerator_T	_generator

Detailed Description

Class holding a random generator.

Definition at line 17 of file RandomGeneration.hpp.

Constructor & Destructor Documentation

stdair::RandomGeneration::RandomGeneration

(

const RandomSeed_T &

iSeed

)

Main constructor.

Definition at line 27 of file RandomGeneration.cpp.

stdair::RandomGeneration::RandomGeneration

(

)

Default constructor.

Note

As per Boost bug #3516 (https://svn.boost.org/trac/boost/ticket/3516) the seed should not be set to 0 (at least on versions of Boost lower than 1.44).

Definition at line 23 of file RandomGeneration.cpp.

stdair::RandomGeneration::~RandomGeneration

(

)

Destructor.

Definition at line 37 of file RandomGeneration.cpp.

Member Function Documentation

RealNumber_T stdair::RandomGeneration::generateUniform01

(

)

Generate a randomised number following a uniform distribution between 0 (included) and 1 (excluded).

Definition at line 53 of file RandomGeneration.cpp.

References _generator.

Referenced by generateNormal(), generateUniform(), and operator()().

RealNumber_T stdair::RandomGeneration::operator() ( )

inline

Same as generateUniform01(). That operator is provided for convenient reasons.

Definition at line 30 of file RandomGeneration.hpp.

References generateUniform01().

RealNumber_T stdair::RandomGeneration::generateUniform	(	const RealNumber_T &	iMinValue,
		const RealNumber_T &	iMaxValue
	)

Generate a randomized number following a uniform distribution between a minimum (included) and a maximum (excluded) value.

Definition at line 59 of file RandomGeneration.cpp.

References generateUniform01().

RealNumber_T stdair::RandomGeneration::generateNormal	(	const RealNumber_T &	mu,
		const RealNumber_T &	sigma
	)

Generate a randomized number following a normal distribution specified by a mean and a standard deviation.

Definition at line 68 of file RandomGeneration.cpp.

References generateUniform01().

Referenced by stdair::BookingClass::generateDemandSamples().

RealNumber_T stdair::RandomGeneration::generateExponential

(

const RealNumber_T &

lambda

)

Generate a randomized number following an exponential distribution specified by a mean and a lambda parameter.

Definition at line 86 of file RandomGeneration.cpp.

References _generator.

BaseGenerator_T& stdair::RandomGeneration::getBaseGenerator ( )

inline

Retrieve the base generator for initialising other random generators.

Definition at line 56 of file RandomGeneration.hpp.

References _generator.

const std::string stdair::RandomGeneration::describe ( ) const

virtual

Give a description of the structure (for display purposes).

Implements stdair::StructAbstract.

Definition at line 46 of file RandomGeneration.cpp.

References _generator.

void stdair::RandomGeneration::init

(

const RandomSeed_T &

iSeed

)

Initialise the random generator.

A uniform random number distribution is defined, which produces "real" values between 0 and 1 (0 inclusive, 1 exclusive).

Definition at line 41 of file RandomGeneration.cpp.

References _generator.

void stdair::StructAbstract::toStream ( std::ostream &  ioOut ) const

inlineinherited

Dump a Business Object into an output stream.

Parameters

ostream&

the output stream.

Definition at line 29 of file StructAbstract.hpp.

References stdair::StructAbstract::describe().

virtual void stdair::StructAbstract::fromStream ( std::istream &  ioIn )

inlinevirtualinherited

Read a Business Object from an input stream.

Parameters

istream&

the input stream.

Reimplemented in stdair::BookingRequestStruct, stdair::EventStruct, stdair::TravelSolutionStruct, stdair::VirtualClassStruct, stdair::ConfigHolderStruct, stdair::FareOptionStruct, stdair::OptimisationNotificationStruct, stdair::ProgressStatusSet, stdair::YieldRange, stdair::CancellationStruct, stdair::AirlineStruct, stdair::RMEventStruct, stdair::SnapshotStruct, stdair::FFDisutilityCurveHolderStruct, stdair::FRAT5CurveHolderStruct, and stdair::BreakPointStruct.

Definition at line 38 of file StructAbstract.hpp.

Referenced by operator>>().

Member Data Documentation

BaseGenerator_T stdair::RandomGeneration::_generator

Random number generator engine.

The random number generator is currently based on boost::minstd_rand. Alternates are boost::mt19937, boost::ecuyer1988.

Definition at line 112 of file RandomGeneration.hpp.

Referenced by describe(), generateExponential(), generateUniform01(), getBaseGenerator(), and init().

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

• stdair/basic/RandomGeneration.hpp
• stdair/basic/RandomGeneration.cpp