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72 lines
2.2 KiB
C++
72 lines
2.2 KiB
C++
///////////////////////////////////////////////////////////////
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// Copyright 2010 - 2021 Douglas Gregor
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// Copyright 2021 Matt Borland.
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// Distributed under the Boost Software License, Version 1.0.
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// See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt
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//
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// Used to support configuration options depending on standalone context
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// by providing either required support or disabling functionality
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#ifndef BOOST_MP_STANDALONE_CONFIG_HPP
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#define BOOST_MP_STANDALONE_CONFIG_HPP
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// Boost.Config is dependency free so it is considered a requirement to use Boost.Multiprecision in standalone mode
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#include <boost/config.hpp>
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// If any of the most frequently used boost headers are missing assume that standalone mode is supposed to be used
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#ifdef __has_include
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#if !__has_include(<boost/assert.hpp>) || !__has_include(<boost/lexical_cast.hpp>) || \
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!__has_include(<boost/throw_exception.hpp>) || !__has_include(<boost/predef/other/endian.h>)
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# ifndef BOOST_MP_STANDALONE
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# define BOOST_MP_STANDALONE
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# endif
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#endif
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#endif
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#ifndef BOOST_MP_STANDALONE
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#include <boost/integer.hpp>
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#include <boost/integer_traits.hpp>
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// Required typedefs for interoperability with standalone mode
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#if defined(BOOST_HAS_INT128) && defined(__cplusplus)
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namespace boost { namespace multiprecision {
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using int128_type = boost::int128_type;
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using uint128_type = boost::uint128_type;
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}}
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#endif
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#else // Standalone mode
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// Prevent Macro sub
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#ifndef BOOST_PREVENT_MACRO_SUBSTITUTION
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# define BOOST_PREVENT_MACRO_SUBSTITUTION
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#endif
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#if defined(BOOST_HAS_INT128) && defined(__cplusplus)
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namespace boost { namespace multiprecision {
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# ifdef __GNUC__
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__extension__ typedef __int128 int128_type;
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__extension__ typedef unsigned __int128 uint128_type;
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# else
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typedef __int128 int128_type;
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typedef unsigned __int128 uint128_type;
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# endif
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}}
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#endif
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// same again for __float128:
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#if defined(BOOST_HAS_FLOAT128) && defined(__cplusplus)
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namespace boost { namespace multiprecision {
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# ifdef __GNUC__
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__extension__ typedef __float128 float128_type;
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# else
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typedef __float128 float128_type;
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# endif
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}}
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#endif
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#endif // BOOST_MP_STANDALONE
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#endif // BOOST_MP_STANDALONE_CONFIG_HPP
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