/data/refman/pasoursint/CMSSW_5_3_10_patch1/src/PhysicsTools/Utilities/interface/Identity.h

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#ifndef PhysicsTools_Utilities_Identity_h
#define PhysicsTools_Utilities_Identity_h

namespace funct {
  
  struct Identity {
    Identity() { }
    double operator()(double x) const {
      return x;
    }
  };

}

#endif