#include <RandomEngine.h>

Public Member Functions
double	flatShoot (double xmin=0.0, double xmax=1.0) const

double	gaussShoot (double mean=0.0, double sigma=1.0) const

unsigned int	poissonShoot (double mean) const

	RandomEngine (edm::RandomNumberGenerator *rng)

CLHEP::HepRandomEngine *	theEngine () const

edm::RandomNumberGenerator *	theRandomNumberGenerator () const

	~RandomEngine ()

Private Attributes
CLHEP::HepRandomEngine *	engine_

CLHEP::RandFlat *	flatDistribution_

CLHEP::RandGauss *	gaussianDistribution_

CLHEP::RandPoisson *	poissonDistribution_

edm::RandomNumberGenerator *	rng_

TRandom3 *	rootEngine_

Detailed Description

Definition at line 18 of file RandomEngine.h.

Constructor & Destructor Documentation

RandomEngine::RandomEngine ( edm::RandomNumberGenerator * rng )

Definition at line 5 of file RandomEngine.cc.

References engine_, flatDistribution_, gaussianDistribution_, edm::RandomNumberGenerator::getEngine(), poissonDistribution_, and rootEngine_.

   : 
   rng_(rng),
   rootEngine_(0)
 {
   // The service engine
   engine_ = &(rng->getEngine());
   // Get the TRandom3 egine, to benefit from Root functional random generation
   if ( engine_->name() == "TRandom3" )
     rootEngine_ = ( (edm::TRandomAdaptor*) engine_ )->getRootEngine();
   // If no root engine, use the CLHEP wrapper.
   if ( !rootEngine_ ) { 
     flatDistribution_ = new CLHEP::RandFlat(*engine_);
     gaussianDistribution_ = new CLHEP::RandGaussQ(*engine_);
     poissonDistribution_ = new CLHEP::RandPoissonQ(*engine_);
   }
 }

RandomEngine::~RandomEngine ( )

Definition at line 23 of file RandomEngine.cc.

References flatDistribution_, gaussianDistribution_, poissonDistribution_, and rootEngine_.

 {
   if ( !rootEngine_ ) { 
     delete flatDistribution_;
     delete gaussianDistribution_;
     delete poissonDistribution_;  
   }
 }

Member Function Documentation

double RandomEngine::flatShoot	(	double	xmin = `0.0`,
		double	xmax = `1.0`
	)		const

inline

Definition at line 30 of file RandomEngine.h.

References flatDistribution_, rootEngine_, SiStripMonitorClusterAlca_cfi::xmax, and SiStripMonitorClusterAlca_cfi::xmin.

Referenced by EcalHitMaker::addHit(), PileUpProducer::beginRun(), BremsstrahlungSimulator::brem(), MuonBremsstrahlungSimulator::brem(), MultipleScatteringSimulator::compute(), PairProductionSimulator::compute(), HFShower::compute(), HDShower::compute(), EMShower::compute(), NuclearInteractionSimulator::compute(), HDRShower::computeShower(), CalorimetryManager::EMShowerSimulation(), GammaFunctionGenerator::gammaFrac(), GammaFunctionGenerator::gammaInt(), SiTrackerGaussianSmearingRecHitConverter::gaussianSmearing(), PairProductionSimulator::gbteth(), BremsstrahlungSimulator::gbteth(), MuonBremsstrahlungSimulator::gbteth(), FlatPrimaryVertexGenerator::generate(), SimpleHistogramGenerator::generate(), BaseNumericalRandomGenerator::generate(), BaseNumericalRandomGenerator::generateExp(), BaseNumericalRandomGenerator::generateLin(), HDRShower::getR(), HDShower::HDShower(), HFShower::HFShower(), ParticlePropagator::initProperDecayTime(), HCALResponse::interMU(), HFShower::makeSteps(), HDShower::makeSteps(), HcalRecHitsMaker::noisifySubdet(), EcalPreshowerRecHitsMaker::noisifySubdet(), NuclearInteractionSimulator::NuclearInteractionSimulator(), BremsstrahlungSimulator::poisson(), PileUpProducer::produce(), MuonSimHitProducer::produce(), EcalBarrelRecHitsMaker::randomNoisifier(), EcalEndcapRecHitsMaker::randomNoisifier(), HDRShower::setHit(), GaussianTail::shoot(), SiPixelGaussianSmearingRecHitConverterAlgorithm::smearHit(), and HDRShower::thetaFunction().

                                                                  { 
     return rootEngine_ ? 
       xmin + (xmax-xmin) * rootEngine_->Rndm()
       :
       xmin + (xmax-xmin)*flatDistribution_->fire();
   }

double RandomEngine::gaussShoot	(	double	mean = `0.0`,
		double	sigma = `1.0`
	)		const

inline

Definition at line 37 of file RandomEngine.h.

References gaussianDistribution_, timingPdfMaker::mean, and rootEngine_.

Referenced by RadialInterval::addInterval(), MultipleScatteringSimulator::compute(), EMShower::compute(), EMShower::EMShower(), HcalRecHitsMaker::Fill(), EcalPreshowerRecHitsMaker::Fill(), HCALResponse::gaussShootNoNegative(), GaussianPrimaryVertexGenerator::generate(), BetaFuncPrimaryVertexGenerator::generate(), EcalEndcapRecHitsMaker::loadPCaloHits(), EcalBarrelRecHitsMaker::loadPCaloHits(), HcalRecHitsMaker::noisifySubdet(), EcalEndcapRecHitsMaker::noisifySuperCrystals(), EcalBarrelRecHitsMaker::noisifyTriggerTower(), EcalBarrelRecHitsMaker::randomNoisifier(), EcalEndcapRecHitsMaker::randomNoisifier(), GaussianTail::shoot(), SiStripGaussianSmearingRecHitConverterAlgorithm::smearHit(), and HDRShower::thetaFunction().

                                                                     { 
     return rootEngine_ ?
       rootEngine_->Gaus(mean,sigma)
       : 
       mean + sigma*gaussianDistribution_->fire();
   }

unsigned int RandomEngine::poissonShoot ( double mean ) const

inline

Definition at line 44 of file RandomEngine.h.

References poissonDistribution_, and rootEngine_.

Referenced by EMShower::compute(), MuonBremsstrahlungSimulator::compute(), HcalRecHitsMaker::noisifySubdet(), EcalPreshowerRecHitsMaker::noisifySubdet(), PileUpProducer::produce(), EcalBarrelRecHitsMaker::randomNoisifier(), and EcalEndcapRecHitsMaker::randomNoisifier().

                                                      { 
     return rootEngine_ ? 
       rootEngine_->Poisson(mean)
       :
       poissonDistribution_->fire(mean);
   }