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//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCUDACXX___CONCEPTS_BOOLEAN_TESTABLE_H
#define _LIBCUDACXX___CONCEPTS_BOOLEAN_TESTABLE_H
#ifndef __cuda_std__
#include <__config>
#endif //__cuda_std__
#include "../__concepts/__concept_macros.h"
#include "../__concepts/convertible_to.h"
#include "../__utility/forward.h"
#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
# pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
# pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
# pragma system_header
#endif // no system header
_LIBCUDACXX_BEGIN_NAMESPACE_STD
#if _LIBCUDACXX_STD_VER > 17
// [concepts.booleantestable]
template<class _Tp>
concept __boolean_testable_impl = convertible_to<_Tp, bool>;
template<class _Tp>
concept __boolean_testable = __boolean_testable_impl<_Tp> && requires(_Tp&& __t) {
{ !_CUDA_VSTD::forward<_Tp>(__t) } -> __boolean_testable_impl;
};
#elif _LIBCUDACXX_STD_VER > 11
template<class _Tp>
_LIBCUDACXX_CONCEPT __boolean_testable_impl = convertible_to<_Tp, bool>;
template<class _Tp>
_LIBCUDACXX_CONCEPT_FRAGMENT(
__boolean_testable_,
requires(_Tp&& __t)(
requires(__boolean_testable_impl<_Tp>),
requires(__boolean_testable_impl<decltype(!_CUDA_VSTD::forward<_Tp>(__t))>)
));
template<class _Tp>
_LIBCUDACXX_CONCEPT __boolean_testable = _LIBCUDACXX_FRAGMENT(__boolean_testable_, _Tp);
#endif // _LIBCUDACXX_STD_VER > 11
_LIBCUDACXX_END_NAMESPACE_STD
#endif // _LIBCUDACXX___CONCEPTS_BOOLEAN_TESTABLE_H
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