23 Containers library [containers]

23.4 Associative containers [associative]

23.4.7 Class template multiset [multiset]

23.4.7.3 multiset specialized algorithms [multiset.special]

template <class Key, class Compare, class Allocator> void swap(multiset<Key,Compare,Allocator>& x, multiset<Key,Compare,Allocator>& y);

Effects:

x.swap(y);