Sprout/sprout/functional/bit_or.hpp
2012-10-25 12:50:03 +09:00

35 lines
895 B
C++

#ifndef SPROUT_FUNCTIONAL_BIT_OR_HPP
#define SPROUT_FUNCTIONAL_BIT_OR_HPP
#include <utility>
#include <sprout/config.hpp>
#include <sprout/utility/forward.hpp>
namespace sprout {
// 20.8.7 bitwise operations
template<typename T = void>
struct bit_or {
public:
typedef T first_argument_type;
typedef T second_argument_type;
typedef T result_type;
public:
SPROUT_CONSTEXPR T operator()(T const& x, T const& y) const {
return x | y;
}
};
template<>
struct bit_or<void> {
public:
template<typename T, typename U>
SPROUT_CONSTEXPR decltype(std::declval<T>() | std::declval<U>())
operator()(T&& x, U&& y)
const SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(std::declval<T>() | std::declval<U>()))
{
return sprout::forward<T>(x) | sprout::forward<U>(y);
}
};
} // namespace sprout
#endif // #ifndef SPROUT_FUNCTIONAL_BIT_OR_HPP