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