16 Library introduction [library]

16.4 Library-wide requirements [requirements]

16.4.4 Requirements on types and expressions [utility.requirements]

16.4.4.2 Template argument requirements [utility.arg.requirements]

Table 28: Cpp17LessThanComparable requirements [tab:cpp17.lessthancomparable]
Expression
Return type
Requirement
a < b
convertible to bool
< is a strict weak ordering relation ([alg.sorting])