std::experimental::ranges::greater_equal(3)

NAME
std::experimental::ranges::greater_equal - std::experimental::ranges::greater_equal

Synopsis
   Defined in header <experimental/ranges/functional>
   template< class T = void >
       requires StrictTotallyOrdered<T> ||
                Same<T, void> || (ranges TS)
                /* < on two const T lvalues invokes a built-in operator
   comparing pointers */
   struct greater_equal;
   template<> (ranges TS)
   struct greater_equal<void>;
   Function object for performing comparisons. The primary template invokes operator<
   on const lvalues of type T and negates the result. The specialization
   greater_equal<void> deduces the parameter types of the function call operator from
   the arguments (but not the return type).
   All specializations of greater_equal are Semiregular.

Member types
   Member type Definition
   is_transparent (member only of greater_equal<void> specialization) /* unspecified */

Member functions
   operator() checks if the first argument is greater than or equal to the second
              (public member function) std::experimental::ranges::greater_equal::operator()
   constexpr bool operator()(const T& x, const T& y) (1) (member only of primary
   const; greater_equal<T> template)
   template< class T, class U >
       requires StrictTotallyOrderedWith<T, U> ||
                /* std::declval<T>() < (member only of
   std::declval<U>() resolves to (2) greater_equal<void>
                   a built-in operator comparing specialization)
   pointers */
   constexpr bool operator()(T&& t, U&& u) const;
   1) Compares x and y. Equivalent to return !ranges::less<>{}(x, y);.
   2) Compares t and u. Equivalent to return !ranges::less<>{}(std::forward<T>(t),
   std::forward<U>(u));.

Notes
   Unlike std::greater_equal, ranges::greater_equal requires all six comparison
   operators <, <=, >, >=, == and != to be valid (via the StrictTotallyOrdered and
   StrictTotallyOrderedWith constraints) and is entirely defined in terms of
   ranges::less. However, the implementation is free to use operator>= directly,
   because those concepts require the results of the comparison operators to be
   consistent.

Example
    This section is incomplete
    Reason: no example

See also
   greater_equal function object implementing x >= y
                 (class template)

Category:
     * Todo no example