namespace std {
template<class T, class A>
class deque;
// TEMPLATE FUNCTIONS
template<class T, class A>
bool operator==(
const deque<T, A>& lhs,
const deque<T, A>& rhs);
template<class T, class A>
bool operator!=(
const deque<T, A>& lhs,
const deque<T, A>& rhs);
template<class T, class A>
bool operator<(
const deque<T, A>& lhs,
const deque<T, A>& rhs);
template<class T, class A>
bool operator>(
const deque<T, A>& lhs,
const deque<T, A>& rhs);
template<class T, class A>
bool operator<=(
const deque<T, A>& lhs,
const deque<T, A>& rhs);
template<class T, class A>
bool operator>=(
const deque<T, A>& lhs,
const deque<T, A>& rhs);
template<class T, class A>
void swap(
deque<T, A>& lhs,
deque<T, A>& rhs);
}