mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2014 Bolero MURAKAMI
|
|
Copyright (C) 2011 RiSK (sscrisk)
|
|
https://github.com/bolero-MURAKAMI/Sprout
|
|
|
|
Distributed under the Boost Software License, Version 1.0. (See accompanying
|
|
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
=============================================================================*/
|
|
#ifndef SPROUT_FUNCTIONAL_LESS_EQUAL_HPP
|
|
#define SPROUT_FUNCTIONAL_LESS_EQUAL_HPP
|
|
|
|
#include <utility>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/utility/forward.hpp>
|
|
|
|
namespace sprout {
|
|
|
|
// 20.8.5 Comparisons
|
|
template<typename T = void>
|
|
struct less_equal {
|
|
public:
|
|
typedef T first_argument_type;
|
|
typedef T second_argument_type;
|
|
typedef bool result_type;
|
|
public:
|
|
SPROUT_CONSTEXPR bool operator()(T const& x, T const& y) const {
|
|
return x <= y;
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct less_equal<void> {
|
|
public:
|
|
typedef void is_transparent;
|
|
public:
|
|
template<typename T, typename U>
|
|
SPROUT_CONSTEXPR decltype(std::declval<T>() <= std::declval<U>())
|
|
operator()(T&& x, U&& y)
|
|
const SPROUT_NOEXCEPT_IF_EXPR(std::declval<T>() <= std::declval<U>())
|
|
{
|
|
return SPROUT_FORWARD(T, x) <= SPROUT_FORWARD(U, y);
|
|
}
|
|
};
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_FUNCTIONAL_LESS_EQUAL_HPP
|