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add C++1y bit operations (partial)

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bolero-MURAKAMI 2014-03-31 14:58:24 +09:00
parent 1bb9336d34
commit 56c9d52436
17 changed files with 435 additions and 67 deletions
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29
sprout/bit/shar.hpp Normal file
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/*=============================================================================
Copyright (c) 2011-2014 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