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// Copyright David Abrahams 2002. Permission to copy, use,
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// modify, sell and distribute this software is granted provided this
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// copyright notice appears in all copies. This software is provided
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// "as is" without express or implied warranty, and with no claim as
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// to its suitability for any purpose.
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#ifndef WORKAROUND_DWA2002126_HPP
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# define WORKAROUND_DWA2002126_HPP
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// Compiler/library version workaround macro
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// #if BOOST_WORKAROUND(BOOST_MSVC, <= 1200)
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// ... // workaround code here
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// When BOOST_STRICT_CONFIG is defined, expands to 0. Otherwise, the
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// first argument must be undefined or expand to a numeric
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// value. The above expands to:
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// (BOOST_MSVC) != 0 && (BOOST_MSVC) <= 1200
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// When used for workarounds on the latest known version of a
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// compiler, the following convention should be observed:
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// #if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1301))
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// The version number in this case corresponds to the last version in
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// which the workaround was known to have been required. It only has
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// value as a comment unless BOOST_DETECT_OUTDATED_WORKAROUNDS is
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// defined, in which case a compiler warning or error will be issued
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// when the compiler version exceeds the argument to BOOST_TESTED_AT
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# ifndef BOOST_STRICT_CONFIG
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# define BOOST_WORKAROUND(symbol, test) \
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((symbol != 0) && (1 % (( (symbol test) ) + 1)))
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// The extra level of parenthesis nesting above, along with the
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// BOOST_OPEN_PAREN indirection below, is required to satisfy the
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// broken preprocessor in MWCW 8.3 and earlier.
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// The basic mechanism works as follows:
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// (symbol test) + 1 => 2 if the test passes, 1 otherwise
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// 1 % ((symbol test) + 1) => 1 if the test passes, 0 otherwise
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// The complication with % is for cooperation with BOOST_TESTED_AT().
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// When "test" is BOOST_TESTED_AT(x) and
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// BOOST_DETECT_OUTDATED_WORKAROUNDS is #defined,
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// symbol test => 1 if symbol <= x, -1 otherwise
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// (symbol test) + 1 => 2 if symbol <= x, 0 otherwise
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// 1 % ((symbol test) + 1) => 1 if symbol <= x, zero divide otherwise
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# ifdef BOOST_DETECT_OUTDATED_WORKAROUNDS
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# define BOOST_OPEN_PAREN (
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# define BOOST_TESTED_AT(value) > value) ?(-1): BOOST_OPEN_PAREN 1
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# define BOOST_TESTED_AT(value) != 0
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# define BOOST_WORKAROUND(symbol, test) 0
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#endif // WORKAROUND_DWA2002126_HPP
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src/bulletml/boost/detail/workaround.hpp
