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___RANDOM_IS_SEED_SEQUENCE_H
10 #define _LIBCPP___RANDOM_IS_SEED_SEQUENCE_H
11 
12 #include <__config>
13 #include <__type_traits/is_convertible.h>
14 #include <__type_traits/is_same.h>
15 #include <__type_traits/remove_cv.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 _Sseq, class _Engine>
24 struct __is_seed_sequence
25 {
26     static _LIBCPP_CONSTEXPR const bool value =
27               !is_convertible<_Sseq, typename _Engine::result_type>::value &&
28               !is_same<__remove_cv_t<_Sseq>, _Engine>::value;
29 };
30 
31 _LIBCPP_END_NAMESPACE_STD
32 
33 #endif // _LIBCPP___RANDOM_IS_SEED_SEQUENCE_H
34