text: # /* **************************************************************************
  #  *                                                                          *
  #  *     (C) Copyright Paul Mensonides 2002-2011.                             *
  #  *     (C) Copyright Edward Diener 2011.                                    *
  #  *     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 for most recent version. */
  #
  # ifndef BOOST_PREPROCESSOR_CONFIG_CONFIG_HPP
  # define BOOST_PREPROCESSOR_CONFIG_CONFIG_HPP
  #
  # /* BOOST_PP_CONFIG_FLAGS */
  #
  # define BOOST_PP_CONFIG_STRICT() 0x0001
  # define BOOST_PP_CONFIG_IDEAL() 0x0002
  #
  # define BOOST_PP_CONFIG_MSVC() 0x0004
  # define BOOST_PP_CONFIG_MWCC() 0x0008
  # define BOOST_PP_CONFIG_BCC() 0x0010
  # define BOOST_PP_CONFIG_EDG() 0x0020
  # define BOOST_PP_CONFIG_DMC() 0x0040
  #
  # ifndef BOOST_PP_CONFIG_FLAGS
  #    if defined(__GCCXML__)
  #        define BOOST_PP_CONFIG_FLAGS() (BOOST_PP_CONFIG_STRICT())
  #    elif defined(__WAVE__)
  #        define BOOST_PP_CONFIG_FLAGS() (BOOST_PP_CONFIG_STRICT())
  #    elif defined(__MWERKS__) && __MWERKS__ >= 0x3200
  #        define BOOST_PP_CONFIG_FLAGS() (BOOST_PP_CONFIG_STRICT())
  #    elif defined(__EDG__) || defined(__EDG_VERSION__)
  #        if defined(_MSC_VER) && (defined(__INTELLISENSE__) || __EDG_VERSION__ >= 308)
  #            define BOOST_PP_CONFIG_FLAGS() (BOOST_PP_CONFIG_MSVC())
  #        else
  #            define BOOST_PP_CONFIG_FLAGS() (BOOST_PP_CONFIG_EDG() | BOOST_PP_CONFIG_STRICT())
  #        endif
  #    elif defined(__MWERKS__)
  #        define BOOST_PP_CONFIG_FLAGS() (BOOST_PP_CONFIG_MWCC())
  #    elif defined(__DMC__)
  #        define BOOST_PP_CONFIG_FLAGS() (BOOST_PP_CONFIG_DMC())
  #    elif defined(__BORLANDC__) && __BORLANDC__ >= 0x581
  #        define BOOST_PP_CONFIG_FLAGS() (BOOST_PP_CONFIG_STRICT())
  #    elif defined(__BORLANDC__) || defined(__IBMC__) || defined(__IBMCPP__) || defined(__SUNPRO_CC)
  #        define BOOST_PP_CONFIG_FLAGS() (BOOST_PP_CONFIG_BCC())
  #    elif defined(_MSC_VER) && !defined(__clang__)
  #        define BOOST_PP_CONFIG_FLAGS() (BOOST_PP_CONFIG_MSVC())
  #    else
  #        define BOOST_PP_CONFIG_FLAGS() (BOOST_PP_CONFIG_STRICT())
  #    endif
  # endif
  #
  # /* BOOST_PP_CONFIG_EXTENDED_LINE_INFO */
  #
  # ifndef BOOST_PP_CONFIG_EXTENDED_LINE_INFO
  #    define BOOST_PP_CONFIG_EXTENDED_LINE_INFO 0
  # endif
  #
  # /* BOOST_PP_CONFIG_ERRORS */
  #
  # ifndef BOOST_PP_CONFIG_ERRORS
  #    ifdef NDEBUG
  #        define BOOST_PP_CONFIG_ERRORS 0
  #    else
  #        define BOOST_PP_CONFIG_ERRORS 1
  #    endif
  # endif
  #
  # /* BOOST_PP_VARIADICS */
  #
  # define BOOST_PP_VARIADICS_MSVC 0
  # if !defined BOOST_PP_VARIADICS
  #    /* variadic support explicitly disabled for all untested compilers */
  #    if defined __GCCXML__ || defined __CUDACC__ || defined __PATHSCALE__ || defined __DMC__ || defined __CODEGEARC__ || defined __BORLANDC__ || defined __MWERKS__ || ( defined __SUNPRO_CC && __SUNPRO_CC < 0x5120 ) || defined __HP_aCC && !defined __EDG__ || defined __MRC__ || defined __SC__ || defined __IBMCPP__ || defined __PGI
  #        define BOOST_PP_VARIADICS 0
  #    /* VC++ (C/C++) */
  #    elif defined _MSC_VER && _MSC_VER >= 1400 && (!defined __EDG__ || defined(__INTELLISENSE__)) && !defined __clang__
  #        define BOOST_PP_VARIADICS 1
  #        undef BOOST_PP_VARIADICS_MSVC
  #        define BOOST_PP_VARIADICS_MSVC 1
  #    /* Wave (C/C++), GCC (C++) */
  #    elif defined __WAVE__ && __WAVE_HAS_VARIADICS__ || defined __GNUC__ && defined __GXX_EXPERIMENTAL_CXX0X__ && __GXX_EXPERIMENTAL_CXX0X__
  #        define BOOST_PP_VARIADICS 1
  #    /* EDG-based (C/C++), GCC (C), and unknown (C/C++) */
  #    elif !defined __cplusplus && __STDC_VERSION__ >= 199901L || __cplusplus >= 201103L
  #        define BOOST_PP_VARIADICS 1
  #    else
  #        define BOOST_PP_VARIADICS 0
  #    endif
  # elif !BOOST_PP_VARIADICS + 1 < 2
  #    undef BOOST_PP_VARIADICS
  #    define BOOST_PP_VARIADICS 1
  #    if defined _MSC_VER && _MSC_VER >= 1400 && (defined(__INTELLISENSE__) || !(defined __EDG__ || defined __GCCXML__ || defined __CUDACC__ || defined __PATHSCALE__ || defined __clang__ || defined __DMC__ || defined __CODEGEARC__ || defined __BORLANDC__ || defined __MWERKS__ || defined __SUNPRO_CC || defined __HP_aCC || defined __MRC__ || defined __SC__ || defined __IBMCPP__ || defined __PGI))
  #        undef BOOST_PP_VARIADICS_MSVC
  #        define BOOST_PP_VARIADICS_MSVC 1
  #    endif
  # else
  #    undef BOOST_PP_VARIADICS
  #    define BOOST_PP_VARIADICS 0
  # endif
  #
  # endif
  