std::greater_equal
From cppreference.com
< cpp | utility | functional
Defined in header <functional>
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template< class T > struct greater_equal; |
(until C++14) | |
template< class T = void > struct greater_equal; |
(since C++14) | |
Function object for performing comparisons. The main template invokes operator>= on type T
.
Contents |
[edit] Specializations
(C++14) |
function object implementing x >= y deducing parameter and return types (class template specialization) |
[edit] Member types
Type | Definition |
result_type (deprecated in C++17)(removed in C++20)
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bool |
first_argument_type (deprecated in C++17)(removed in C++20)
|
T
|
second_argument_type (deprecated in C++17)(removed in C++20)
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T
|
These member types are obtained via publicly inheriting std::binary_function<T, T, bool>. |
(until C++11) |
[edit] 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; |
(constexpr 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.
[edit] 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 } |
[edit] 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 inconsistent | guaranteed to be consistent |
[edit] See also
function object implementing x < y (class template) | |
(C++20) |
constrained function object implementing x >= y (class) |