Go to the documentation of this file.00001 #ifndef PhysicsTools_Utilities_Sum_h
00002 #define PhysicsTools_Utilities_Sum_h
00003 #include "PhysicsTools/Utilities/interface/Numerical.h"
00004 #include <boost/static_assert.hpp>
00005
00006 namespace funct {
00007 template<typename A, typename B>
00008 struct SumStruct {
00009 SumStruct(const A & a, const B & b) : _1(a), _2(b) { }
00010 double operator()() const {
00011 return _1() + _2();
00012 }
00013 operator double() const {
00014 return _1() + _2();
00015 }
00016 double operator()(double x) const {
00017 return _1(x) + _2(x);
00018 }
00019 double operator()(double x, double y) const {
00020 return _1(x, y) + _2(x, y);
00021 }
00022 A _1;
00023 B _2;
00024 };
00025
00026 template<typename A, typename B>
00027 struct Sum {
00028 typedef SumStruct<A, B> type;
00029 static type combine(const A& a, const B& b) { return type(a, b); }
00030 };
00031
00032 template<typename A, typename B>
00033 inline typename Sum<A, B>::type operator+(const A& a, const B& b) {
00034 return Sum<A, B>::combine(a, b);
00035 }
00036
00037 }
00038
00039 #endif
1.7.3