--- /dev/null
+// TR1 type_traits -*- C++ -*-
+
+// Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file tr1/type_traits
+ * This is a TR1 C++ Library header.
+ */
+
+#ifndef _GLIBCXX_TR1_TYPE_TRAITS
+#define _GLIBCXX_TR1_TYPE_TRAITS 1
+
+#pragma GCC system_header
+
+#if defined(_GLIBCXX_INCLUDE_AS_CXX0X)
+# error TR1 header cannot be included from C++0x header
+#endif
+
+#include <cstddef>
+
+#if defined(_GLIBCXX_INCLUDE_AS_TR1)
+# include <tr1_impl/type_traits>
+#else
+# define _GLIBCXX_INCLUDE_AS_TR1
+# define _GLIBCXX_BEGIN_NAMESPACE_TR1 namespace tr1 {
+# define _GLIBCXX_END_NAMESPACE_TR1 }
+# define _GLIBCXX_TR1 tr1::
+# include <tr1_impl/type_traits>
+# undef _GLIBCXX_TR1
+# undef _GLIBCXX_END_NAMESPACE_TR1
+# undef _GLIBCXX_BEGIN_NAMESPACE_TR1
+# undef _GLIBCXX_INCLUDE_AS_TR1
+#endif
+
+namespace std
+{
+namespace tr1
+{
+#define _DEFINE_SPEC(_Trait, _Type) \
+ template<> \
+ struct _Trait<_Type> \
+ : public true_type { };
+
+ template<typename>
+ struct is_reference
+ : public false_type { };
+
+ template<typename _Tp>
+ struct is_reference<_Tp&>
+ : public true_type { };
+
+ template<typename _Tp>
+ struct is_pod
+ : public integral_constant<bool, __is_pod(_Tp) || is_void<_Tp>::value>
+ { };
+
+ template<typename _Tp>
+ struct has_trivial_constructor
+ : public integral_constant<bool, is_pod<_Tp>::value>
+ { };
+
+ template<typename _Tp>
+ struct has_trivial_copy
+ : public integral_constant<bool, is_pod<_Tp>::value>
+ { };
+
+ template<typename _Tp>
+ struct has_trivial_assign
+ : public integral_constant<bool, is_pod<_Tp>::value>
+ { };
+
+ template<typename _Tp>
+ struct has_trivial_destructor
+ : public integral_constant<bool, is_pod<_Tp>::value>
+ { };
+
+ template<typename _Tp>
+ struct has_nothrow_constructor
+ : public integral_constant<bool, is_pod<_Tp>::value>
+ { };
+
+ template<typename _Tp>
+ struct has_nothrow_copy
+ : public integral_constant<bool, is_pod<_Tp>::value>
+ { };
+
+ template<typename _Tp>
+ struct has_nothrow_assign
+ : public integral_constant<bool, is_pod<_Tp>::value>
+ { };
+
+ template<typename>
+ struct __is_signed_helper
+ : public false_type { };
+ _DEFINE_SPEC(__is_signed_helper, signed char)
+ _DEFINE_SPEC(__is_signed_helper, short)
+ _DEFINE_SPEC(__is_signed_helper, int)
+ _DEFINE_SPEC(__is_signed_helper, long)
+ _DEFINE_SPEC(__is_signed_helper, long long)
+
+ template<typename _Tp>
+ struct is_signed
+ : public integral_constant<bool, (__is_signed_helper<typename
+ remove_cv<_Tp>::type>::value)>
+ { };
+
+ template<typename>
+ struct __is_unsigned_helper
+ : public false_type { };
+ _DEFINE_SPEC(__is_unsigned_helper, unsigned char)
+ _DEFINE_SPEC(__is_unsigned_helper, unsigned short)
+ _DEFINE_SPEC(__is_unsigned_helper, unsigned int)
+ _DEFINE_SPEC(__is_unsigned_helper, unsigned long)
+ _DEFINE_SPEC(__is_unsigned_helper, unsigned long long)
+
+ template<typename _Tp>
+ struct is_unsigned
+ : public integral_constant<bool, (__is_unsigned_helper<typename
+ remove_cv<_Tp>::type>::value)>
+ { };
+
+ template<typename _Base, typename _Derived>
+ struct __is_base_of_helper
+ {
+ typedef typename remove_cv<_Base>::type _NoCv_Base;
+ typedef typename remove_cv<_Derived>::type _NoCv_Derived;
+ static const bool __value = (is_same<_Base, _Derived>::value
+ || (__is_base_of(_Base, _Derived)
+ && !is_same<_NoCv_Base,
+ _NoCv_Derived>::value));
+ };
+
+ template<typename _Base, typename _Derived>
+ struct is_base_of
+ : public integral_constant<bool,
+ __is_base_of_helper<_Base, _Derived>::__value>
+ { };
+
+ template<typename _From, typename _To>
+ struct __is_convertible_simple
+ : public __sfinae_types
+ {
+ private:
+ static __one __test(_To);
+ static __two __test(...);
+ static _From __makeFrom();
+
+ public:
+ static const bool __value = sizeof(__test(__makeFrom())) == 1;
+ };
+
+ template<typename _Tp>
+ struct add_reference;
+
+ template<typename _Tp>
+ struct __is_int_or_cref
+ {
+ typedef typename remove_reference<_Tp>::type __rr_Tp;
+ static const bool __value = (is_integral<_Tp>::value
+ || (is_integral<__rr_Tp>::value
+ && is_const<__rr_Tp>::value
+ && !is_volatile<__rr_Tp>::value));
+ };
+
+ template<typename _From, typename _To,
+ bool = (is_void<_From>::value || is_void<_To>::value
+ || is_function<_To>::value || is_array<_To>::value
+ // This special case is here only to avoid warnings.
+ || (is_floating_point<typename
+ remove_reference<_From>::type>::value
+ && __is_int_or_cref<_To>::__value))>
+ struct __is_convertible_helper
+ {
+ // "An imaginary lvalue of type From...".
+ static const bool __value = (__is_convertible_simple<typename
+ add_reference<_From>::type, _To>::__value);
+ };
+
+ template<typename _From, typename _To>
+ struct __is_convertible_helper<_From, _To, true>
+ { static const bool __value = (is_void<_To>::value
+ || (__is_int_or_cref<_To>::__value
+ && !is_void<_From>::value)); };
+
+ template<typename _From, typename _To>
+ struct is_convertible
+ : public integral_constant<bool,
+ __is_convertible_helper<_From, _To>::__value>
+ { };
+
+ // reference modifications [4.7.2].
+ template<typename _Tp>
+ struct remove_reference
+ { typedef _Tp type; };
+
+ template<typename _Tp>
+ struct remove_reference<_Tp&>
+ { typedef _Tp type; };
+
+ // NB: Careful with reference to void.
+ template<typename _Tp, bool = (is_void<_Tp>::value
+ || is_reference<_Tp>::value)>
+ struct __add_reference_helper
+ { typedef _Tp& type; };
+
+ template<typename _Tp>
+ struct __add_reference_helper<_Tp, true>
+ { typedef _Tp type; };
+
+ template<typename _Tp>
+ struct add_reference
+ : public __add_reference_helper<_Tp>
+ { };
+
+ // other transformations [4.8].
+ template<std::size_t _Len, std::size_t _Align>
+ struct aligned_storage
+ {
+ union type
+ {
+ unsigned char __data[_Len];
+ struct __attribute__((__aligned__((_Align)))) { } __align;
+ };
+ };
+
+#undef _DEFINE_SPEC
+}
+}
+
+#endif // _GLIBCXX_TR1_TYPE_TRAITS
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