24 Iterators library [iterators]

24.5 Iterator adaptors [predef.iterators]

24.5.1 Reverse iterators [reverse.iterators]

24.5.1.3 reverse_iterator operations [reverse.iter.ops]

24.5.1.3.4 operator* [reverse.iter.op.star]

constexpr reference operator*() const;

Effects: As if by:

Iterator tmp = current;
return *--tmp;