text: 
  // NO INCLUDE GUARDS, THE HEADER IS INTENDED FOR MULTIPLE INCLUSION
  
  // Copyright Aleksey Gurtovoy 2002-2004
  //
  // 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)
  
  // $Source: /physbam_repository/External_Libraries/Archives/boost/boost/type_traits/detail/bool_trait_def.hpp,v $
  // $Date: 2007/02/12 18:26:08 $
  // $Revision: 1.1 $
  
  #include <boost/type_traits/detail/template_arity_spec.hpp>
  #include <boost/type_traits/integral_constant.hpp>
  #include <boost/mpl/bool.hpp>
  #include <boost/mpl/aux_/lambda_support.hpp>
  #include <boost/config.hpp>
  
  #if defined(__SUNPRO_CC) && (__SUNPRO_CC < 0x570)
  #   define BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
      typedef ::boost::integral_constant<bool,C> type; \
      enum { value = type::value }; \
      /**/
  #   define BOOST_TT_AUX_BOOL_C_BASE(C)
  
  #elif defined(BOOST_MSVC) && BOOST_MSVC <= 1200
  
  #   define BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
      typedef ::boost::integral_constant<bool,C> base_; \
      using base_::value; \
      /**/
  
  #endif
  
  #ifndef BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL
  #   define BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) /**/
  #endif
  
  #ifndef BOOST_TT_AUX_BOOL_C_BASE
  #   define BOOST_TT_AUX_BOOL_C_BASE(C) : ::boost::integral_constant<bool,C>
  #endif 
  
  
  #define BOOST_TT_AUX_BOOL_TRAIT_DEF1(trait,T,C) \
  template< typename T > struct trait \
      BOOST_TT_AUX_BOOL_C_BASE(C) \
  { \
      BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
      BOOST_MPL_AUX_LAMBDA_SUPPORT(1,trait,(T)) \
  }; \
  \
  BOOST_TT_AUX_TEMPLATE_ARITY_SPEC(1,trait) \
  /**/
  
  
  #define BOOST_TT_AUX_BOOL_TRAIT_DEF2(trait,T1,T2,C) \
  template< typename T1, typename T2 > struct trait \
      BOOST_TT_AUX_BOOL_C_BASE(C) \
  { \
      BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
      BOOST_MPL_AUX_LAMBDA_SUPPORT(2,trait,(T1,T2)) \
  }; \
  \
  BOOST_TT_AUX_TEMPLATE_ARITY_SPEC(2,trait) \
  /**/
  
  #define BOOST_TT_AUX_BOOL_TRAIT_SPEC1(trait,sp,C) \
  template<> struct trait< sp > \
      BOOST_TT_AUX_BOOL_C_BASE(C) \
  { \
      BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
      BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(1,trait,(sp)) \
  }; \
  /**/
  
  #define BOOST_TT_AUX_BOOL_TRAIT_SPEC2(trait,sp1,sp2,C) \
  template<> struct trait< sp1,sp2 > \
      BOOST_TT_AUX_BOOL_C_BASE(C) \
  { \
      BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
      BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(2,trait,(sp1,sp2)) \
  }; \
  /**/
  
  #define BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC1(trait,sp,C) \
  template<> struct trait##_impl< sp > \
  { \
      BOOST_STATIC_CONSTANT(bool, value = (C)); \
  }; \
  /**/
  
  #define BOOST_TT_AUX_BOOL_TRAIT_IMPL_SPEC2(trait,sp1,sp2,C) \
  template<> struct trait##_impl< sp1,sp2 > \
  { \
      BOOST_STATIC_CONSTANT(bool, value = (C)); \
  }; \
  /**/
  
  #define BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(param,trait,sp,C) \
  template< param > struct trait< sp > \
      BOOST_TT_AUX_BOOL_C_BASE(C) \
  { \
      BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
  }; \
  /**/
  
  #define BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_2(param1,param2,trait,sp,C) \
  template< param1, param2 > struct trait< sp > \
      BOOST_TT_AUX_BOOL_C_BASE(C) \
  { \
      BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
  }; \
  /**/
  
  #define BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC2_1(param,trait,sp1,sp2,C) \
  template< param > struct trait< sp1,sp2 > \
      BOOST_TT_AUX_BOOL_C_BASE(C) \
  { \
      BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
      BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(2,trait,(sp1,sp2)) \
  }; \
  /**/
  
  #define BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC2_2(param1,param2,trait,sp1,sp2,C) \
  template< param1, param2 > struct trait< sp1,sp2 > \
      BOOST_TT_AUX_BOOL_C_BASE(C) \
  { \
      BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(C) \
  }; \
  /**/
  
  #define BOOST_TT_AUX_BOOL_TRAIT_IMPL_PARTIAL_SPEC2_1(param,trait,sp1,sp2,C) \
  template< param > struct trait##_impl< sp1,sp2 > \
  { \
      BOOST_STATIC_CONSTANT(bool, value = (C)); \
  }; \
  /**/
  
  #ifndef BOOST_NO_CV_SPECIALIZATIONS
  #   define BOOST_TT_AUX_BOOL_TRAIT_CV_SPEC1(trait,sp,value) \
      BOOST_TT_AUX_BOOL_TRAIT_SPEC1(trait,sp,value) \
      BOOST_TT_AUX_BOOL_TRAIT_SPEC1(trait,sp const,value) \
      BOOST_TT_AUX_BOOL_TRAIT_SPEC1(trait,sp volatile,value) \
      BOOST_TT_AUX_BOOL_TRAIT_SPEC1(trait,sp const volatile,value) \
      /**/
  #else
  #   define BOOST_TT_AUX_BOOL_TRAIT_CV_SPEC1(trait,sp,value) \
      BOOST_TT_AUX_BOOL_TRAIT_SPEC1(trait,sp,value) \
      /**/
  #endif
  