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William Tanenbaum
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Apr 25, 2011
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@@ -1,37 +1,36 @@ | ||
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#include "IOMC/RandomEngine/src/RandomFilter.h" | ||
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#include "FWCore/ParameterSet/interface/ParameterSet.h" | ||
#include "FWCore/ServiceRegistry/interface/Service.h" | ||
#include "FWCore/Utilities/interface/Exception.h" | ||
#include "FWCore/Utilities/interface/RandomNumberGenerator.h" | ||
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#include "CLHEP/Random/RandFlat.h" | ||
#include "FWCore/Utilities/interface/Exception.h" | ||
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using namespace edm; | ||
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RandomFilter::RandomFilter(edm::ParameterSet const& ps) : | ||
acceptRate_(ps.getUntrackedParameter<double>("acceptRate")), | ||
flatDistribution_() | ||
{ | ||
flatDistribution_() { | ||
Service<RandomNumberGenerator> rng; | ||
if ( ! rng.isAvailable()) { | ||
if(!rng.isAvailable()) { | ||
throw cms::Exception("Configuration") | ||
<< "RandomFilter requires the RandomNumberGeneratorService,\n" | ||
"which is not present in the configuration file. You must add\n" | ||
"the service in the configuration file or remove the modules that\n" | ||
"require it.\n"; | ||
"require it.\n"; | ||
} | ||
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CLHEP::HepRandomEngine& engine = rng->getEngine(); | ||
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flatDistribution_.reset(new CLHEP::RandFlat(engine, 0.0, 1.0)); | ||
} | ||
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RandomFilter::~RandomFilter() | ||
{ | ||
RandomFilter::~RandomFilter() { | ||
} | ||
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bool RandomFilter::filter(edm::Event& e, edm::EventSetup const& c) | ||
{ | ||
bool RandomFilter::filter(edm::Event&, edm::EventSetup const&) { | ||
if (flatDistribution_->fire() < acceptRate_) return true; | ||
return false; | ||
} |
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