QuadLinear.cxx

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/*
  Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration
*/
/***************************************************************************
                          QuadLinear.cxx  -  description
                             -------------------
    begin                : 31-05-2006 
    email                : Alan.Watson@cern.ch
 ***************************************************************************/
 
#include "TrigT1CaloUtils/QuadLinear.h"
 
namespace LVL1 {
 
 
unsigned int LVL1::QuadLinear::Compress(int Et) {
 
  // Compressed codes are unsigned. Calling function should keep track of sign   
  unsigned int code = abs(Et);
  unsigned int quadEt = m_mask + ((m_nRanges-1)<<m_Offset);
   
  for (int i = 0; i < m_nRanges; i++) {
    if ( code <= m_mask ) {
      quadEt = code + (i<<m_Offset);
      break;
    }
    code >>= m_nShift;
  }
  return quadEt;
}
 
unsigned int LVL1::QuadLinear::Expand(int Code) {
 
  // Compressed codes are unsigned. Calling function should keep track of sign   
  int range = Code >> m_Offset;
  int Et = Code&m_mask;
  
  return (Et<<= (range*m_nShift));
}
 
} // end of namespace bracket