22 Containers library [containers]

22.6 Container adaptors [container.adaptors]

22.6.6 Class template stack [stack]

22.6.6.4 Operators [stack.ops]

template<class T, class Container> bool operator==(const stack<T, Container>& x, const stack<T, Container>& y);
Returns: x.c == y.c.
template<class T, class Container> bool operator!=(const stack<T, Container>& x, const stack<T, Container>& y);
Returns: x.c != y.c.
template<class T, class Container> bool operator< (const stack<T, Container>& x, const stack<T, Container>& y);
Returns: x.c < y.c.
template<class T, class Container> bool operator> (const stack<T, Container>& x, const stack<T, Container>& y);
Returns: x.c > y.c.
template<class T, class Container> bool operator<=(const stack<T, Container>& x, const stack<T, Container>& y);
Returns: x.c <= y.c.
template<class T, class Container> bool operator>=(const stack<T, Container>& x, const stack<T, Container>& y);
Returns: x.c >= y.c.
template<class T, three_way_comparable Container> compare_three_way_result_t<Container> operator<=>(const stack<T, Container>& x, const stack<T, Container>& y);
Returns: x.c <=> y.c.