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/data/doxygen/doxygen-1.7.3/gen/CMSSW_4_2_8/src/PhysicsTools/Utilities/interface/Log.h

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00001 #ifndef PhysicsTools_Utilities_Log_h
00002 #define PhysicsTools_Utilities_Log_h
00003 
00004 #include <cmath>
00005 
00006 namespace funct {
00007 
00008   template<typename T>
00009   struct LogStruct {
00010     LogStruct(const T& t) : _(t) { }
00011     inline double operator()() const { return ::log(_()); }
00012     T _; 
00013   };
00014 
00015   template<typename T>
00016   struct Log {
00017     typedef LogStruct<T> type;
00018     inline static type compose(const T& t) { return type(t); }
00019   };
00020 
00021   template<typename T>
00022   inline typename Log<T>::type log(const T & t) { return Log<T>::compose(t); }
00023 
00024 }
00025 
00026 #endif