namespace boost {
  namespace icl {
    template<typename Type> struct identity_based_inplace_combine;
    template<typename Type> struct unit_element_based_inplace_combine;
    template<typename Type> struct inplace_identity;
    template<typename Type> struct inplace_erasure;
    template<typename Type> struct inplace_plus;
    template<typename Type> struct inplace_minus;
    template<typename Type> struct inplace_bit_add;
    template<typename Type> struct inplace_bit_subtract;
    template<typename Type> struct inplace_bit_and;
    template<typename Type> struct inplace_bit_xor;
    template<typename Type> struct inplace_et;
    template<typename Type> struct inplace_caret;
    template<typename Type> struct inplace_insert;
    template<typename Type> struct inplace_erase;
    template<typename Type> struct inplace_star;
    template<typename Type> struct inplace_slash;
    template<typename Type> struct inplace_max;
    template<typename Type> struct inplace_min;
    template<typename Type> struct inter_section;
    template<typename Functor> struct inverse;
    template<typename Type> struct inverse<icl::inplace_plus< Type >>;
    template<typename Type> struct inverse<icl::inplace_minus< Type >>;
    template<typename Type> struct inverse<icl::inplace_bit_add< Type >>;
    template<typename Type> struct inverse<icl::inplace_bit_subtract< Type >>;
    template<typename Type> struct inverse<icl::inplace_et< Type >>;
    template<typename Type> struct inverse<icl::inplace_caret< Type >>;
    template<typename Type> struct inverse<icl::inplace_bit_and< Type >>;
    template<typename Type> struct inverse<icl::inplace_bit_xor< Type >>;
    template<typename Type> struct inverse<icl::inplace_star< Type >>;
    template<typename Type> struct inverse<icl::inplace_slash< Type >>;
    template<typename Type> struct inverse<icl::inplace_max< Type >>;
    template<typename Type> struct inverse<icl::inplace_min< Type >>;
    template<typename Type> struct inverse<icl::inplace_identity< Type >>;
    template<typename Type> struct inverse<icl::inter_section< Type >>;
    template<typename Functor> struct is_negative;
    template<typename Type> struct is_negative<icl::inplace_minus< Type >>;
    template<typename Type> 
      struct is_negative<icl::inplace_bit_subtract< Type >>;
    template<typename Combiner> struct conversion;
    template<typename Combiner> struct version;
    template<> struct version<icl::inplace_minus< short >>;
    template<> struct version<icl::inplace_minus< int >>;
    template<> struct version<icl::inplace_minus< long >>;
    template<> struct version<icl::inplace_minus< long long >>;
    template<> struct version<icl::inplace_minus< float >>;
    template<> struct version<icl::inplace_minus< double >>;
    template<> struct version<icl::inplace_minus< long double >>;
    template<typename Type> struct version<icl::inplace_minus< Type >>;
  }
}