#ifndef efficiencies_h
#define efficiencies_h

#include <utility>
#include <string>

template <typename T1, typename T2> std::pair<double, std::pair<double, double> > GetEfficiency(T1, T2);
template <typename T1, typename T2> std::string PrintEfficiency(T1, T2);
std::pair<double, double> GetSurvivingEvents(std::pair<double, double> nEvents, 
                          std::pair<double, std::pair<double, double> >efficiency);
std::pair<double, double> GetSurvivingEvents(double nEvents,std::pair<double, double> efficiency);
std::pair<double, double> GetEfficiencyProd(std::pair<double,double> eff1, std::pair<double,double> eff2);
std::pair<double, double> GetEfficiencyRatio(std::pair<double,double> eff1, std::pair<double,double> eff2);
std::pair<double, double> GetRatio(double, double);
std::string PrintWeightedEvent(double);
#endif // #ifdef