1 //  boost/detail/bitmask.hpp  ------------------------------------------------//
2 
3 //  Copyright Beman Dawes 2006
4 
5 //  Distributed under the Boost Software License, Version 1.0
6 //  http://www.boost.org/LICENSE_1_0.txt
7 
8 //  Usage:  enum foo { a=1, b=2, c=4 };
9 //          BOOST_BITMASK( foo );
10 //
11 //          void f( foo arg );
12 //          ...
13 //          f( a | c );
14 
15 #ifndef BOOST_BITMASK_HPP
16 #define BOOST_BITMASK_HPP
17 
18 #include <boost/cstdint.hpp>
19 
20 #define BOOST_BITMASK(Bitmask)                                            \
21                                                                           \
22   inline Bitmask operator| (Bitmask x , Bitmask y )                       \
23   { return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x)     \
24       | static_cast<boost::int_least32_t>(y)); }                          \
25                                                                           \
26   inline Bitmask operator& (Bitmask x , Bitmask y )                       \
27   { return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x)     \
28       & static_cast<boost::int_least32_t>(y)); }                          \
29                                                                           \
30   inline Bitmask operator^ (Bitmask x , Bitmask y )                       \
31   { return static_cast<Bitmask>( static_cast<boost::int_least32_t>(x)     \
32       ^ static_cast<boost::int_least32_t>(y)); }                          \
33                                                                           \
34   inline Bitmask operator~ (Bitmask x )                                   \
35   { return static_cast<Bitmask>(~static_cast<boost::int_least32_t>(x)); } \
36                                                                           \
37   inline Bitmask & operator&=(Bitmask & x , Bitmask y)                    \
38   { x = x & y ; return x ; }                                              \
39                                                                           \
40   inline Bitmask & operator|=(Bitmask & x , Bitmask y)                    \
41   { x = x | y ; return x ; }                                              \
42                                                                           \
43   inline Bitmask & operator^=(Bitmask & x , Bitmask y)                    \
44   { x = x ^ y ; return x ; }
45 
46 #endif // BOOST_BITMASK_HPP
47 
48