1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef _LIBCPP___TYPE_TRAITS_IS_PRIMARY_TEMPLATE_H
10 #define _LIBCPP___TYPE_TRAITS_IS_PRIMARY_TEMPLATE_H
11 
12 #include <__config>
13 #include <__type_traits/enable_if.h>
14 #include <__type_traits/is_same.h>
15 #include <__type_traits/is_valid_expansion.h>
16 
17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
18 #  pragma GCC system_header
19 #endif
20 
21 _LIBCPP_BEGIN_NAMESPACE_STD
22 
23 template <class _Tp>
24 using __test_for_primary_template = __enable_if_t<
25     _IsSame<_Tp, typename _Tp::__primary_template>::value
26   >;
27 template <class _Tp>
28 using __is_primary_template = _IsValidExpansion<
29     __test_for_primary_template, _Tp
30   >;
31 
32 _LIBCPP_END_NAMESPACE_STD
33 
34 #endif // _LIBCPP___TYPE_TRAITS_IS_PRIMARY_TEMPLATE_H
35