std::experimental::pmr::memory_resource::is_equal

From cppreference.com
bool is_equal( const memory_resource& other ) const noexcept ;
(library fundamentals TS)

Compares *this for equality with other. Two memory_resources compare equal if and only if memory allocated from one memory_resource

Equivalent to return do_is_equal(other);.

See also

[virtual]
compare for equality with another memory_resource
(virtual protected member function)