NAME¶

std::greater_equal - std::greater_equal

Synopsis¶

Defined in header <functional>
template< class T > (until C++14)
struct greater_equal;
template< class T = void > (since C++14)
struct greater_equal;

Function object for performing comparisons. The main template invokes operator>= on
type T.

Specializations¶

greater_equal<void> function object implementing x >= y deducing parameter and
(C++14) return types
(class template specialization)

Member types¶

Type Definition
result_type (deprecated in C++17)(removed in C++20) bool
first_argument_type (deprecated in C++17)(removed in C++20) T
second_argument_type (deprecated in C++17)(removed in C++20) T

These member types are obtained via publicly inheriting (until C++11)
std::binary_function<T, T, bool>.

Member functions¶

operator() checks if the first argument is greater than or equal to the second
(public member function)

std::greater_equal::operator()

bool operator()( const T& lhs, const T& rhs ) const; (until C++14)
constexpr bool operator()( const T& lhs, const T& rhs ) const; (since C++14)

Checks whether lhs is greater than or equal to rhs.

Parameters¶

lhs, rhs - values to compare

Return value¶

lhs >= rhs.

If T is a pointer type, the result is consistent with the implementation-defined
strict total order over pointers.

Exceptions¶

May throw implementation-defined exceptions.

Possible implementation¶

constexpr bool operator()(const T& lhs, const T& rhs) const
{
return lhs >= rhs; // assumes that the implementation handles pointer total order
}

Defect reports

The following behavior-changing defect reports were applied retroactively to
previously published C++ standards.

DR Applied to Behavior as published Correct behavior
LWG 2562 C++98 the pointer total order might be guaranteed to be consistent
inconsistent

See also¶

less function object implementing x < y
(class template)
ranges::greater_equal constrained function object implementing x >= y
(C++20) (class)