Annex D (normative) Compatibility features [depr]

D.11 Relational operators [depr.relops]

1
#
The header <utility> ([utility.syn]) has the following additions: 
namespace std::rel_ops {
  template<class T> bool operator!=(const T&, const T&);
  template<class T> bool operator> (const T&, const T&);
  template<class T> bool operator<=(const T&, const T&);
  template<class T> bool operator>=(const T&, const T&);
}
2
#
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);
3
#
Requires: Type T is Cpp17EqualityComparable (Table 25).
4
#
Returns: !(x == y).
🔗
template<class T> bool operator>(const T& x, const T& y);
5
#
Requires: Type T is Cpp17LessThanComparable (Table 26).
6
#
Returns: y < x.
🔗
template<class T> bool operator<=(const T& x, const T& y);
7
#
Requires: Type T is Cpp17LessThanComparable (Table 26).
8
#
Returns: !(y < x).
🔗
template<class T> bool operator>=(const T& x, const T& y);
9
#
Requires: Type T is Cpp17LessThanComparable (Table 26).
10
#
Returns: !(x < y).