[concepts.compare.general] (original) (raw)

18 Concepts library [concepts]

18.5 Comparison concepts [concepts.compare]

18.5.1 General [concepts.compare.general]

1

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Subclause [concepts.compare] describes concepts that establish relationships and orderings on values of possibly differing object types.

2

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Given an expression E and a type C, let CONVERT_TO_LVALUE<C>(E) be:

• (2.1)
  static_cast<const C&>(as_const(E)) if that is a valid expression, and
• (2.2)
  static_cast<const C&>(std​::​move(E)) otherwise.