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Add fix for different indexing convention in early uGT prescale columns #22314

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merged 1 commit into from Feb 23, 2018
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Add fix for different indexing convention in early uGT prescale columns #22314

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16 changes: 16 additions & 0 deletions L1Trigger/L1TGlobal/src/L1TGlobalUtil.cc
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Expand Up @@ -225,6 +225,22 @@ void l1t::L1TGlobalUtil::retrieveL1Event(const edm::Event& iEvent, const edm::Ev
if (algBlk != m_uGtAlgBlk->end(0)){
if (! m_readPrescalesFromFile){
m_PreScaleColumn = static_cast<unsigned int>(algBlk->getPreScColumn());

// Fix for MC prescale column being set to index+1 in early versions of uGT emulator
if (iEvent.run() == 1){
if (m_prescaleFactorsAlgoTrig->size() == 1 && m_PreScaleColumn ==1) m_PreScaleColumn = 0;
}

// add protection against out-of-bound index for prescale column
if(m_PreScaleColumn >= m_prescaleFactorsAlgoTrig->size()) {
LogDebug("l1t|Global")
<< "Prescale column extracted from GlobalAlgBlk too large: " << m_PreScaleColumn
<< "\tMaximum value allowed: " << m_prescaleFactorsAlgoTrig->size()-1
<< "\tResetting prescale column to 0"
<< std::endl;
m_PreScaleColumn = 0;
}

}
const std::vector<int>& prescaleSet = (*m_prescaleFactorsAlgoTrig)[m_PreScaleColumn];

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