diff options
Diffstat (limited to 'boost/type_traits/has_minus.hpp')
| -rw-r--r-- | boost/type_traits/has_minus.hpp | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/boost/type_traits/has_minus.hpp b/boost/type_traits/has_minus.hpp index 3f6271a57b..fcd5d94779 100644 --- a/boost/type_traits/has_minus.hpp +++ b/boost/type_traits/has_minus.hpp @@ -52,25 +52,25 @@ namespace boost struct dont_care; - template <class T, class U, class Ret, class = boost::void_t<>> + template <class T, class U, class Ret, class = void> struct has_minus_ret_imp : public boost::false_type {}; template <class T, class U, class Ret> - struct has_minus_ret_imp<T, U, Ret, boost::void_t<decltype(std::declval<typename add_reference<T>::type>() - std::declval<typename add_reference<U>::type>())> > + struct has_minus_ret_imp<T, U, Ret, typename boost::make_void<decltype(std::declval<typename add_reference<T>::type>() - std::declval<typename add_reference<U>::type>())>::type> : public boost::integral_constant<bool, ::boost::is_convertible<decltype(std::declval<typename add_reference<T>::type>() - std::declval<typename add_reference<U>::type>()), Ret>::value> {}; - template <class T, class U, class = boost::void_t<> > + template <class T, class U, class = void > struct has_minus_void_imp : public boost::false_type {}; template <class T, class U> - struct has_minus_void_imp<T, U, boost::void_t<decltype(std::declval<typename add_reference<T>::type>() - std::declval<typename add_reference<U>::type>())> > + struct has_minus_void_imp<T, U, typename boost::make_void<decltype(std::declval<typename add_reference<T>::type>() - std::declval<typename add_reference<U>::type>())>::type> : public boost::integral_constant<bool, ::boost::is_void<decltype(std::declval<typename add_reference<T>::type>() - std::declval<typename add_reference<U>::type>())>::value> {}; - template <class T, class U, class = boost::void_t<>> + template <class T, class U, class = void> struct has_minus_dc_imp : public boost::false_type {}; template <class T, class U> - struct has_minus_dc_imp<T, U, boost::void_t<decltype(std::declval<typename add_reference<T>::type>() - std::declval<typename add_reference<U>::type>())> > + struct has_minus_dc_imp<T, U, typename boost::make_void<decltype(std::declval<typename add_reference<T>::type>() - std::declval<typename add_reference<U>::type>())>::type> : public boost::true_type {}; template <class T, class U, class Ret> |