xref: /openbsd-src/gnu/llvm/libcxx/include/__random/is_seed_sequence.h (revision 4bdff4bed0e3d54e55670334c7d0077db4170f86)
1*4bdff4beSrobert //===----------------------------------------------------------------------===//
2*4bdff4beSrobert //
3*4bdff4beSrobert // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4*4bdff4beSrobert // See https://llvm.org/LICENSE.txt for license information.
5*4bdff4beSrobert // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6*4bdff4beSrobert //
7*4bdff4beSrobert //===----------------------------------------------------------------------===//
8*4bdff4beSrobert 
9*4bdff4beSrobert #ifndef _LIBCPP___RANDOM_IS_SEED_SEQUENCE_H
10*4bdff4beSrobert #define _LIBCPP___RANDOM_IS_SEED_SEQUENCE_H
11*4bdff4beSrobert 
12*4bdff4beSrobert #include <__config>
13*4bdff4beSrobert #include <type_traits>
14*4bdff4beSrobert 
15*4bdff4beSrobert #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
16*4bdff4beSrobert #  pragma GCC system_header
17*4bdff4beSrobert #endif
18*4bdff4beSrobert 
19*4bdff4beSrobert _LIBCPP_BEGIN_NAMESPACE_STD
20*4bdff4beSrobert 
21*4bdff4beSrobert template <class _Sseq, class _Engine>
22*4bdff4beSrobert struct __is_seed_sequence
23*4bdff4beSrobert {
24*4bdff4beSrobert     static _LIBCPP_CONSTEXPR const bool value =
25*4bdff4beSrobert               !is_convertible<_Sseq, typename _Engine::result_type>::value &&
26*4bdff4beSrobert               !is_same<__remove_cv_t<_Sseq>, _Engine>::value;
27*4bdff4beSrobert };
28*4bdff4beSrobert 
29*4bdff4beSrobert _LIBCPP_END_NAMESPACE_STD
30*4bdff4beSrobert 
31*4bdff4beSrobert #endif // _LIBCPP___RANDOM_IS_SEED_SEQUENCE_H
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