9 Iterators library [iterators]

9.7 Iterator adaptors [iterators.predef]

9.7.3 Move iterators and sentinels [iterators.move]

9.7.3.2 move_iterator operations [move.iter.ops]

9.7.3.2.10 move_iterator::operator-= [move.iter.op.-=]

constexpr move_iterator& operator-=(difference_type n) requires RandomAccessIterator<I>;

Effects: Equivalent to current -= n.

Returns: *this.