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00001 #include <math.h> 00002 #include <stdexcept> 00003 00004 #include "OnlineDB/EcalCondDB/interface/EcalCommon.h" 00005 00006 using namespace std; 00007 00008 int EcalCommon::crystalToTriggerTower(int xtal) 00009 throw(runtime_error) 00010 { 00011 if (xtal < 1 || xtal > 1700) { 00012 throw(runtime_error("ERROR: crystalToTriggerTower: crystal number out of bounds")); 00013 } 00014 00015 int i = (int) floor((xtal-1)/20.0); 00016 int j = (xtal-1) - 20*i; 00017 int tti = (int) floor(i/5.0); 00018 int ttj = (int) floor(j/5.0); 00019 int tt = ttj + 4*tti + 1; 00020 00021 return tt; 00022 } 00023