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> 14 15 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 16 # pragma GCC system_header 17 #endif 18 19 _LIBCPP_BEGIN_NAMESPACE_STD 20 21 template <class _Sseq, class _Engine> 22 struct __is_seed_sequence 23 { 24 static _LIBCPP_CONSTEXPR const bool value = 25 !is_convertible<_Sseq, typename _Engine::result_type>::value && 26 !is_same<typename remove_cv<_Sseq>::type, _Engine>::value; 27 }; 28 29 _LIBCPP_END_NAMESPACE_STD 30 31 #endif // _LIBCPP___RANDOM_IS_SEED_SEQUENCE_H 32