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[SVN r16596]
This commit is contained in:
Dave Abrahams
2002-12-12 18:43:26 +00:00
parent 430d235b4e
commit 6b980a5a2d
1 changed files with 12 additions and 7 deletions
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19
include/boost/detail/workaround.hpp
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@ -6,8 +6,6 @@
#ifndef WORKAROUND_DWA2002126_HPP
# define WORKAROUND_DWA2002126_HPP
# include <boost/config.hpp>
// Compiler/library version workaround macro
//
// Usage:
@ -18,15 +16,22 @@
//
// When BOOST_STRICT_CONFIG is defined, expands to 0. Otherwise, the
// first argument must be undefined or expand to a numeric
// value. The above expands to the moral equivalent of:
// value. The above expands to:
//
// defined(BOOST_MSVC) && BOOST_MSVC <= 1200
// (BOOST_MSVC) != 0 && (BOOST_MSVC) <= 1200
//
// When used for workarounds on the latest known version of a
// compiler, the following convention should be observed:
//
// #if BOOST_WORKAROUND(BOOST_MSVC, |0x1301)
//
// The version number in this case corresponds to the last version in
// which the workaround was known to have been required. It only has
// value as a comment, since the outcome of the test is always 1
// unless BOOST_STRICT_CONFIG is defined.
# ifndef BOOST_STRICT_CONFIG
# include <boost/preprocessor/cat.hpp>
# define BOOST_NUMERIC_DEFINED_SUFFIX 1
# define BOOST_WORKAROUND(symbol, test) (BOOST_PP_CAT(symbol,BOOST_NUMERIC_DEFINED_SUFFIX) && symbol test)
# define BOOST_WORKAROUND(symbol, test) ((symbol) != 0 && ((symbol) test))
# else
# define BOOST_WORKAROUND(symbol, test) 0
# endif