#include <RandomEngineAndDistribution.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

	RandomEngineAndDistribution (edm::StreamID const &)

	RandomEngineAndDistribution (edm::LuminosityBlockIndex const &)

CLHEP::HepRandomEngine &	theEngine () const

	~RandomEngineAndDistribution ()

Private Attributes
CLHEP::HepRandomEngine *	engine_

TRandom3 *	rootEngine_

Detailed Description

Definition at line 18 of file RandomEngineAndDistribution.h.

Constructor & Destructor Documentation

RandomEngineAndDistribution::RandomEngineAndDistribution ( edm::StreamID const & streamID )

Definition at line 10 of file RandomEngineAndDistribution.cc.

References engine_, Exception, edm::RandomNumberGenerator::getEngine(), edm::Service< T >::isAvailable(), and rootEngine_.

                                                                                     :
   engine_(nullptr),
   rootEngine_(nullptr) {
   edm::Service<edm::RandomNumberGenerator> rng;
   if ( ! rng.isAvailable() ) {
     throw cms::Exception("Configuration") <<
       "RandomNumberGenerator service is not available.\n"
       "You must add the service in the configuration file\n"
       "or remove the module that requires it.";
   }
   engine_ = &rng->getEngine(streamID);
 
   // Get the TRandom3 egine, to benefit from Root functional random generation
   if ( engine_->name() == "TRandom3" )
     rootEngine_ = ( (edm::TRandomAdaptor*) engine_ )->getRootEngine();
 }

RandomEngineAndDistribution::RandomEngineAndDistribution ( edm::LuminosityBlockIndex const & luminosityBlockIndex )

Definition at line 27 of file RandomEngineAndDistribution.cc.

References engine_, Exception, edm::RandomNumberGenerator::getEngine(), edm::Service< T >::isAvailable(), and rootEngine_.

                                                                                                             :
   engine_(nullptr),
   rootEngine_(nullptr) {
   edm::Service<edm::RandomNumberGenerator> rng;
   if ( ! rng.isAvailable() ) {
     throw cms::Exception("Configuration") <<
       "RandomNumberGenerator service is not available.\n"
       "You must add the service in the configuration file\n"
       "or remove the module that requires it.";
   }
   engine_ = &rng->getEngine(luminosityBlockIndex);
 
   // Get the TRandom3 egine, to benefit from Root functional random generation
   if ( engine_->name() == "TRandom3" )
     rootEngine_ = ( (edm::TRandomAdaptor*) engine_ )->getRootEngine();
 }

RandomEngineAndDistribution::~RandomEngineAndDistribution ( )

Definition at line 44 of file RandomEngineAndDistribution.cc.

44 {

45 }

Member Function Documentation

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

inline

Definition at line 29 of file RandomEngineAndDistribution.h.

References engine_, rootEngine_, hlt_dqm_clientPB-live_cfg::xmax, and hlt_dqm_clientPB-live_cfg::xmin.

Referenced by BremsstrahlungSimulator::brem(), MultipleScatteringSimulator::compute(), PairProductionSimulator::compute(), GammaFunctionGenerator::gammaFrac(), GammaFunctionGenerator::gammaInt(), PairProductionSimulator::gbteth(), BremsstrahlungSimulator::gbteth(), SimpleHistogramGenerator::generate(), BaseNumericalRandomGenerator::generate(), BaseNumericalRandomGenerator::generateExp(), BaseNumericalRandomGenerator::generateLin(), BremsstrahlungSimulator::poisson(), DoubleCrystalBallGenerator::shoot(), and GaussianTail::shoot().

                                                                   {
     if(rootEngine_) {
       return xmin + (xmax - xmin) * rootEngine_->Rndm();
     } else {
       CLHEP::RandFlat flatDistribution(*engine_);
       return xmin + (xmax - xmin) * flatDistribution.fire();
     }
   }

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

inline

Definition at line 38 of file RandomEngineAndDistribution.h.

References engine_, timingPdfMaker::mean, and rootEngine_.

Referenced by RadialInterval::addInterval(), MultipleScatteringSimulator::compute(), GaussianTail::shoot(), and SiStripGaussianSmearingRecHitConverterAlgorithm::smearHit().

                                                                     {
     if(rootEngine_) {
       return rootEngine_->Gaus(mean,sigma);
     } else {
       CLHEP::RandGaussQ gaussianDistribution(*engine_);
       return mean + sigma * gaussianDistribution.fire();
     }
   }

unsigned int RandomEngineAndDistribution::poissonShoot ( double mean ) const

inline

Definition at line 47 of file RandomEngineAndDistribution.h.

References engine_, and rootEngine_.

                                                      {
     if(rootEngine_) {
       return rootEngine_->Poisson(mean);
     } else {
       CLHEP::RandPoissonQ poissonDistribution(*engine_);
       return poissonDistribution.fire(mean);
     }
   }