// --------------------------------------------------

 //

 // (C) Copyright Chuck Allison and Jeremy Siek 2001 - 2002.

 // (C) Copyright Gennaro Prota                 2003 - 2004.

 //

 // Distributed under the Boost Software License, Version 1.0.

 //    (See accompanying file LICENSE_1_0.txt or copy at

 //          http://www.boost.org/LICENSE_1_0.txt)

 //

 // -----------------------------------------------------------

 //  See http://www.boost.org/libs/dynamic_bitset for documentation.

 #ifndef BOOST_DYNAMIC_BITSET_CONFIG_HPP_GP_20040424

 #define BOOST_DYNAMIC_BITSET_CONFIG_HPP_GP_20040424

 #include "boost/config.hpp"

 #include "boost/detail/workaround.hpp"

 // support for pre 3.0 libstdc++ - thanks Phil Edwards!

 #if defined (__STL_CONFIG_H) && !defined (__STL_USE_NEW_IOSTREAMS)

 # define BOOST_OLD_IOSTREAMS

 #endif

 // this should be in the config system some day

 // see http://lists.boost.org/MailArchives/boost/msg62291.php

 #define BOOST_DYNAMIC_BITSET_GNUC_VERSION  (  __GNUC__       * 100 * 100     \

                                             + __GNUC_MINOR__ * 100)

 // workaround for gcc bug c++/8419 - gps

 namespace boost { namespace detail {

     template <typename T> T make_non_const(T t) { return t; }

 }}

 #if defined(__GNUC__) && BOOST_WORKAROUND(BOOST_DYNAMIC_BITSET_GNUC_VERSION, \

                                           BOOST_TESTED_AT(30300))

 # define BOOST_DYNAMIC_BITSET_WRAP_CONSTANT(expr) \

          (boost::detail::make_non_const(expr))

 #else

 # define BOOST_DYNAMIC_BITSET_WRAP_CONSTANT(expr) (expr)

 #endif

 //

 #if (defined __BORLANDC__ && BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)))  \

                              || (defined BOOST_NO_MEMBER_TEMPLATE_FRIENDS)

 #define BOOST_DYNAMIC_BITSET_DONT_USE_FRIENDS

 #endif

 // if we can't use friends then private members are exposed

 //

 #if defined(BOOST_DYNAMIC_BITSET_DONT_USE_FRIENDS)

 #define BOOST_DYNAMIC_BITSET_PRIVATE public

 #else

 #define BOOST_DYNAMIC_BITSET_PRIVATE private

 #endif

 // A couple of macros to cope with libraries without locale

 // support. The first macro must be used to declare a reference

 // to a ctype facet. The second one to widen a char by using

 // that ctype object. If facets and locales aren't available

 // the first macro is a no-op and the second one just expands

 // to its parameter c.

 //

 #if defined (BOOST_USE_FACET)

 #define BOOST_DYNAMIC_BITSET_CTYPE_FACET(ch, name, loc)     \

             const std::ctype<ch> & name =                   \

             BOOST_USE_FACET(std::ctype<ch>, loc)         /**/

 #define BOOST_DYNAMIC_BITSET_WIDEN_CHAR(fac, c)             \

            (fac.widen(c))

 #else

 #define BOOST_DYNAMIC_BITSET_CTYPE_FACET(ch, name, loc) /**/

 #define BOOST_DYNAMIC_BITSET_WIDEN_CHAR(fac, c)          c

 #endif

 #endif // include guard