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Edit File: bitmask.hpp

// boost/detail/bitmask.hpp ------------------------------------------------// // Copyright Beman Dawes 2006 // Distributed under the Boost Software License, Version 1.0 // http://www.boost.org/LICENSE_1_0.txt // Usage: enum foo { a=1, b=2, c=4 }; // BOOST_BITMASK( foo ) // // void f( foo arg ); // ... // f( a | c ); // // See [bitmask.types] in the C++ standard for the formal specification #ifndef BOOST_BITMASK_HPP #define BOOST_BITMASK_HPP #include <boost/config.hpp> #include <boost/cstdint.hpp> #define BOOST_BITMASK(Bitmask) \ \ inline BOOST_CONSTEXPR Bitmask operator| (Bitmask x , Bitmask y ) \ { return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x) \ | static_cast<boost::int_least32_t>(y)); } \ \ inline BOOST_CONSTEXPR Bitmask operator& (Bitmask x , Bitmask y ) \ { return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x) \ & static_cast<boost::int_least32_t>(y)); } \ \ inline BOOST_CONSTEXPR Bitmask operator^ (Bitmask x , Bitmask y ) \ { return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x) \ ^ static_cast<boost::int_least32_t>(y)); } \ \ inline BOOST_CONSTEXPR Bitmask operator~ (Bitmask x ) \ { return static_cast<Bitmask>(~static_cast<boost::int_least32_t>(x)); } \ \ inline Bitmask & operator&=(Bitmask& x , Bitmask y) \ { x = x & y ; return x ; } \ \ inline Bitmask & operator|=(Bitmask& x , Bitmask y) \ { x = x | y ; return x ; } \ \ inline Bitmask & operator^=(Bitmask& x , Bitmask y) \ { x = x ^ y ; return x ; } \ \ /* Boost extensions to [bitmask.types] */ \ \ inline BOOST_CONSTEXPR bool operator!(Bitmask x) \ { return !static_cast<int>(x); } \ \ inline BOOST_CONSTEXPR bool bitmask_set(Bitmask x) \ { return !!x; } #endif // BOOST_BITMASK_HPP