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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___ITERATOR_INDIRECTLY_COMPARABLE_H
#define _LIBCUDACXX___ITERATOR_INDIRECTLY_COMPARABLE_H
#ifndef __cuda_std__
#include <__config>
#endif // __cuda_std__
#include "../__functional/identity.h"
#include "../__iterator/concepts.h"
#include "../__iterator/projected.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
template <class _Iter1, class _Iter2, class _BinaryPred,
class _Proj1 = identity, class _Proj2 = identity>
concept indirectly_comparable =
indirect_binary_predicate<_BinaryPred, projected<_Iter1, _Proj1>,
projected<_Iter2, _Proj2>>;
#elif _LIBCUDACXX_STD_VER > 14
// clang-format off
template <class _Iter1, class _Iter2, class _BinaryPred, class _Proj1, class _Proj2>
_LIBCUDACXX_CONCEPT_FRAGMENT(
__indirectly_comparable_,
requires()(
requires(indirect_binary_predicate<_BinaryPred, projected<_Iter1, _Proj1>, projected<_Iter2, _Proj2>>)
));
template <class _Iter1, class _Iter2, class _BinaryPred, class _Proj1 = identity, class _Proj2 = identity>
_LIBCUDACXX_CONCEPT indirectly_comparable =
_LIBCUDACXX_FRAGMENT(__indirectly_comparable_, _Iter1, _Iter2, _BinaryPred, _Proj1, _Proj2);
// clang-format on
#endif // _LIBCUDACXX_STD_VER > 14
_LIBCUDACXX_END_NAMESPACE_STD
#endif // _LIBCUDACXX___ITERATOR_INDIRECTLY_COMPARABLE_H
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