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1 // boost/detail/bitmask.hpp ------------------------------------------------//
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2
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3 // Copyright Beman Dawes 2006
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4
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5 // Distributed under the Boost Software License, Version 1.0
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6 // http://www.boost.org/LICENSE_1_0.txt
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7
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8 // Usage: enum foo { a=1, b=2, c=4 };
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9 // BOOST_BITMASK( foo );
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10 //
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11 // void f( foo arg );
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12 // ...
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13 // f( a | c );
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14
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15 #ifndef BOOST_BITMASK_HPP
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16 #define BOOST_BITMASK_HPP
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17
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18 #include <boost/cstdint.hpp>
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19
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20 #define BOOST_BITMASK(Bitmask) \
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21 \
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22 inline Bitmask operator| (Bitmask x , Bitmask y ) \
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23 { return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x) \
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24 | static_cast<boost::int_least32_t>(y)); } \
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25 \
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26 inline Bitmask operator& (Bitmask x , Bitmask y ) \
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27 { return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x) \
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28 & static_cast<boost::int_least32_t>(y)); } \
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29 \
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30 inline Bitmask operator^ (Bitmask x , Bitmask y ) \
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31 { return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x) \
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32 ^ static_cast<boost::int_least32_t>(y)); } \
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33 \
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34 inline Bitmask operator~ (Bitmask x ) \
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35 { return static_cast<Bitmask>(~static_cast<boost::int_least32_t>(x)); } \
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36 \
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37 inline Bitmask & operator&=(Bitmask & x , Bitmask y) \
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38 { x = x & y ; return x ; } \
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39 \
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40 inline Bitmask & operator|=(Bitmask & x , Bitmask y) \
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41 { x = x | y ; return x ; } \
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42 \
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43 inline Bitmask & operator^=(Bitmask & x , Bitmask y) \
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44 { x = x ^ y ; return x ; }
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45
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46 #endif // BOOST_BITMASK_HPP
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47
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