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Added BOOST_STATIC_CONSTANT

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[SVN r9126]
This commit is contained in:
Dave Abrahams
2001-02-11 19:29:01 +00:00
parent 891b2db577
commit 0f89a54d5e
1 changed files with 12 additions and 0 deletions
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12
include/boost/config.hpp
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@@ -11,6 +11,7 @@
// http://www.boost.org/libs/config // http://www.boost.org/libs/config
// Revision History (excluding minor changes for specific compilers) // Revision History (excluding minor changes for specific compilers)
// 11 Feb 01 Added BOOST_STATIC_CONSTANT (Dave Abrahams)
// 20 Jan 01 BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS moved here from // 20 Jan 01 BOOST_NO_LIMITS_COMPILE_TIME_CONSTANTS moved here from
// cast.hpp. Added missing BOOST_NO_STRINGSTREAM which some // cast.hpp. Added missing BOOST_NO_STRINGSTREAM which some
// boost code seemed to depend on. (Dave Abrahams) // boost code seemed to depend on. (Dave Abrahams)
@@ -503,6 +504,17 @@ namespace std {
} }
#endif #endif
// BOOST_STATIC_CONSTANT workaround --------------------------------------- //
// On compilers which don't allow in-class initialization of static integral
// constant members, we must use enums as a workaround if we want the constants
// to be available at compile-time. This macro gives us a convenient way to
// declare such constants.
#ifdef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
# define BOOST_STATIC_CONSTANT(type, assignment) enum { assignment }
#else
# define BOOST_STATIC_CONSTANT(type, assignment) static const type assignment
#endif
#endif // BOOST_CONFIG_HPP #endif // BOOST_CONFIG_HPP