Sprout/sprout/bit/shar.hpp
2016-02-25 18:48:28 +09:00

29 lines
933 B
C++

/*=============================================================================
Copyright (c) 2011-2016 Bolero MURAKAMI
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_BIT_SHAR_HPP
#define SPROUT_BIT_SHAR_HPP
#include <type_traits>
#include <sprout/config.hpp>
namespace sprout {
//
// shar
//
template<typename Integral>
inline SPROUT_CONSTEXPR typename std::enable_if<
std::is_integral<Integral>::value,
Integral
>::type
shar(Integral x, int s) SPROUT_NOEXCEPT {
typedef typename std::make_signed<Integral>::type type;
return static_cast<Integral>(static_cast<type>(x) >> s);
}
} // namespace sprout
#endif // #ifndef SPROUT_BIT_SHAR_HPP