Squashed 'third_party/boostorg/detail/' content from commit 824721a
Change-Id: Id58ef7955aa7ca41b9e6b3f41ee1b0ad900985ea
git-subtree-dir: third_party/boostorg/detail
git-subtree-split: 824721a7533de893338ed5bbc8e8d9f4fb1ad716
diff --git a/include/boost/detail/bitmask.hpp b/include/boost/detail/bitmask.hpp
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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
+