std::less_equal

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Defined in header <functional>

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template< class T >
struct less_equal;

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Function object for performing comparisons. Implements Template:cpp on type T.

Implementation-defined strict total order over pointers

A specialization of std::less_equal for any pointer type yields the implementation-defined strict total order, even if the built-in operator<= operator does not.

The implementation-defined strict total order is consistent with the partial order imposed by built-in comparison operators (<=>,(since C++20)<, >, <=, and >=), and consistent among following standard function objects:

• std::less, std::greater, std::less_equal, and std::greater_equal, when the template argument is a pointer type or void(since C++14)

std::ranges::equal_to, std::ranges::not_equal_to, std::ranges::less, std::ranges::greater, std::ranges::less_equal, std::ranges::greater_equal, and std::compare_three_way

(since C++20)

Member functions

operator()

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

std::less_equal::operator()

bool operator()( const T& lhs, const T& rhs ) const;

Checks if lhs is less than or equal to rhs.

Parameters

lhs, rhs

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values to compare

Return value

Template:cpp if Template:cpp, Template:cpp otherwise.

Exceptions

(none)

Possible implementation