26 Containers library [containers]

26.6 Container adaptors [container.adaptors]

26.6.6 Class template stack [stack]

26.6.6.4 stack operators [stack.ops]

template <class T, class Container> bool operator==(const stack<T, Container>& x, const stack<T, Container>& y);

template <class T, class Container> bool operator!=(const stack<T, Container>& x, const stack<T, Container>& y);

template <class T, class Container> bool operator< (const stack<T, Container>& x, const stack<T, Container>& y);

template <class T, class Container> bool operator<=(const stack<T, Container>& x, const stack<T, Container>& y);

template <class T, class Container> bool operator> (const stack<T, Container>& x, const stack<T, Container>& y);

template <class T, class Container> bool operator>=(const stack<T, Container>& x, const stack<T, Container>& y);