00001 #ifndef OPERATORS_H_
00002 #define OPERATORS_H_
00003 #include <iostream>
00004
00005 template <class T> std::pair<T, T> operator+(const std::pair<T, T>& one, const std::pair<T, T>& two) {
00006 std::pair<T, T> r(one.first + two.first, one.second + two.second);
00007 return r;
00008 }
00009
00010 template <class T> std::pair<T, T> operator-(const std::pair<T, T>& one, const std::pair<T, T>& two) {
00011 std::pair<T, T> r(one.first - two.first, one.second - two.second);
00012 return r;
00013 }
00014
00015 template <class T> std::ostream& operator<<(std::ostream& s, const std::pair<T, T>& aT) {
00016 s << "(" << aT.first << ", " << aT.second << ")";
00017 return s;
00018 }
00019
00020 #endif
