boost/boost/type_traits/is_scalar.hpp

   1
   2 // (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
   3 // Permission to copy, use, modify, sell and
   4 // distribute this software is granted provided this copyright notice appears
   5 // in all copies. This software is provided "as is" without express or implied
   6 // warranty, and with no claim as to its suitability for any purpose.
   7 //
   8 // See http://www.boost.org for most recent version including documentation.
   9
  10 #ifndef BOOST_TT_IS_SCALAR_HPP_INCLUDED
  11 #define BOOST_TT_IS_SCALAR_HPP_INCLUDED
  12
  13 #include "boost/type_traits/is_arithmetic.hpp"
  14 #include "boost/type_traits/is_enum.hpp"
  15 #include "boost/type_traits/is_pointer.hpp"
  16 #include "boost/type_traits/is_member_pointer.hpp"
  17 #include "boost/type_traits/detail/ice_or.hpp"
  18 #include "boost/config.hpp"
  19
  20 // should be the last #include
  21 #include "boost/type_traits/detail/bool_trait_def.hpp"
  22
  23 namespace boost {
  24
  25 namespace detail {
  26
  27 template <typename T>
  28 struct is_scalar_impl
  29 {
  30    BOOST_STATIC_CONSTANT(bool, value =
  31       (::boost::type_traits::ice_or<
  32          ::boost::is_arithmetic<T>::value,
  33          ::boost::is_enum<T>::value,
  34          ::boost::is_pointer<T>::value,
  35          ::boost::is_member_pointer<T>::value
  36       >::value));
  37 };
  38
  39 // these specializations are only really needed for compilers
  40 // without partial specialization support:
  41 template <> struct is_scalar_impl<void>{ BOOST_STATIC_CONSTANT(bool, value = false ); };
  42 #ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
  43 template <> struct is_scalar_impl<void const>{ BOOST_STATIC_CONSTANT(bool, value = false ); };
  44 template <> struct is_scalar_impl<void volatile>{ BOOST_STATIC_CONSTANT(bool, value = false ); };
  45 template <> struct is_scalar_impl<void const volatile>{ BOOST_STATIC_CONSTANT(bool, value = false ); };
  46 #endif
  47
  48 } // namespace detail
  49
  50 BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_scalar,T,::boost::detail::is_scalar_impl<T>::value)
  51
  52 } // namespace boost
  53
  54 #include "boost/type_traits/detail/bool_trait_undef.hpp"
  55
  56 #endif // BOOST_TT_IS_SCALAR_HPP_INCLUDED