mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
34 lines
790 B
C++
34 lines
790 B
C++
#ifndef SPROUT_FUNCTIONAL_LOGICAL_NOT_HPP
|
|
#define SPROUT_FUNCTIONAL_LOGICAL_NOT_HPP
|
|
|
|
#include <utility>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/utility/forward.hpp>
|
|
|
|
namespace sprout {
|
|
// 20.8.6 logical operations
|
|
template<typename T = void>
|
|
struct logical_not {
|
|
public:
|
|
typedef T argument_type;
|
|
typedef bool result_type;
|
|
public:
|
|
SPROUT_CONSTEXPR bool operator()(T const& x) const {
|
|
return !x;
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct logical_not<void> {
|
|
public:
|
|
template<typename T>
|
|
SPROUT_CONSTEXPR decltype(!std::declval<T>())
|
|
operator()(T&& x)
|
|
const SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(!std::declval<T>()))
|
|
{
|
|
return !sprout::forward<T>(x);
|
|
}
|
|
};
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_FUNCTIONAL_LOGICAL_NOT_HPP
|