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// 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