15 Library introduction [library]

15.4 Method of description (Informative) [description]

15.4.2 Other conventions [conventions]

15.4.2.3 Operators [operators]

1
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In this library, whenever a declaration is provided for an operator!=, operator>, operator<=, or operator>= for a type T, its requirements and semantics are as follows, unless explicitly specified otherwise.
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bool operator!=(const T& x, const T& y);
2
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Requires: Type T is Cpp17EqualityComparable (Table 22).
3
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Returns: !(x == y).
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bool operator>(const T& x, const T& y);
4
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Requires: Type T is Cpp17LessThanComparable (Table 23).
5
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Returns: y < x.
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bool operator<=(const T& x, const T& y);
6
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Requires: Type T is Cpp17LessThanComparable (Table 23).
7
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Returns: !(y < x).
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bool operator>=(const T& x, const T& y);
8
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Requires: Type T is Cpp17LessThanComparable (Table 23).
9
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Returns: !(x < y).