ceph/src/boost/libs/detail/include/boost/detail/bitmask.hpp

   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