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]

24.5.1.3.11 operator-= [reverse.iter.op-=]

constexpr reverse_iterator& operator-=(difference_type n);

1

Effects: As if by: current += n;

2

Returns: *this.