25 Iterators library [iterators]

25.5 Iterator adaptors [predef.iterators]

25.5.1 Reverse iterators [reverse.iterators]

25.5.1.8 Comparisons [reverse.iter.cmp]

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template<class Iterator1, class Iterator2> constexpr bool operator==( const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
1
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Constraints: x.base() == y.base() is well-formed and convertible to bool.
2
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Returns: x.base() == y.base().
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template<class Iterator1, class Iterator2> constexpr bool operator!=( const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
3
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Constraints: x.base() != y.base() is well-formed and convertible to bool.
4
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Returns: x.base() != y.base().
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template<class Iterator1, class Iterator2> constexpr bool operator<( const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
5
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Constraints: x.base() > y.base() is well-formed and convertible to bool.
6
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Returns: x.base() > y.base().
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template<class Iterator1, class Iterator2> constexpr bool operator>( const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
7
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Constraints: x.base() < y.base() is well-formed and convertible to bool.
8
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Returns: x.base() < y.base().
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template<class Iterator1, class Iterator2> constexpr bool operator<=( const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
9
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Constraints: x.base() >= y.base() is well-formed and convertible to bool.
10
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Returns: x.base() >= y.base().
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template<class Iterator1, class Iterator2> constexpr bool operator>=( const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
11
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Constraints: x.base() <= y.base() is well-formed and convertible to bool.
12
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Returns: x.base() <= y.base().
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template<class Iterator1, three_way_comparable_with<Iterator1> Iterator2> constexpr compare_three_way_result_t<Iterator1, Iterator2> operator<=>(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
13
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Returns: y.base() <=> x.base().
14
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[Note 1: 
The argument order in the Returns: element is reversed because this is a reverse iterator.
— end note]