20 General utilities library [utilities]

20.2 Utility components [utility]

20.2.1 Operators [operators]

1

To avoid redundant definitions of operator!= out of operator== and operators >, <=, and >= out of operator<, the library provides the following:

template <class T> bool operator!=(const T& x, const T& y);

2

Requires: Type T is EqualityComparable (Table [equalitycomparable]).

3

Returns: !(x == y).

template <class T> bool operator>(const T& x, const T& y);

4

Requires: Type T is LessThanComparable (Table [lessthancomparable]).

5

Returns: y < x.

template <class T> bool operator<=(const T& x, const T& y);

6

Requires: Type T is LessThanComparable (Table [lessthancomparable]).

7

Returns: !(y < x).

template <class T> bool operator>=(const T& x, const T& y);

8

Requires: Type T is LessThanComparable (Table [lessthancomparable]).

9

Returns: !(x < y).

10

In this library, whenever a declaration is provided for an operator!=, operator>, operator>=, or operator<=, and requirements and semantics are not explicitly provided, the requirements and semantics are as specified in this Clause.