derek.holloway
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79 lines
3.3 KiB
C++
79 lines
3.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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// SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCUDACXX___CONCEPTS_COMMON_WITH_H
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#define _LIBCUDACXX___CONCEPTS_COMMON_WITH_H
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#include <cuda/std/detail/__config>
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#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
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# pragma GCC system_header
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#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
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# pragma clang system_header
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#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
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# pragma system_header
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#endif // no system header
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#include <cuda/std/__concepts/common_reference_with.h>
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#include <cuda/std/__concepts/concept_macros.h>
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#include <cuda/std/__concepts/same_as.h>
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#include <cuda/std/__type_traits/add_lvalue_reference.h>
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#include <cuda/std/__type_traits/common_type.h>
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#include <cuda/std/__utility/declval.h>
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_LIBCUDACXX_BEGIN_NAMESPACE_STD
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#if !defined(_CCCL_NO_CONCEPTS)
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// [concept.common]
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template <class _Tp, class _Up>
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concept common_with = same_as<common_type_t<_Tp, _Up>, common_type_t<_Up, _Tp>> && requires {
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static_cast<common_type_t<_Tp, _Up>>(_CUDA_VSTD::declval<_Tp>());
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static_cast<common_type_t<_Tp, _Up>>(_CUDA_VSTD::declval<_Up>());
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} && common_reference_with<add_lvalue_reference_t<const _Tp>, add_lvalue_reference_t<const _Up>> && common_reference_with<add_lvalue_reference_t<common_type_t<_Tp, _Up>>, common_reference_t<add_lvalue_reference_t<const _Tp>, add_lvalue_reference_t<const _Up>>>;
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#elif !defined(_CCCL_NO_VARIABLE_TEMPLATES) // ^^^ !_CCCL_NO_CONCEPTS ^^^
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template <class _Tp, class _Up>
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_CCCL_CONCEPT_FRAGMENT(__common_type_exists_,
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requires()(typename(common_type_t<_Tp, _Up>), typename(common_type_t<_Up, _Tp>)));
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template <class _Tp, class _Up>
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_CCCL_CONCEPT _Common_type_exists = _CCCL_FRAGMENT(__common_type_exists_, _Tp, _Up);
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template <class _Tp, class _Up>
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_CCCL_CONCEPT_FRAGMENT(__common_type_constructible_,
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requires()(requires(_Common_type_exists<_Tp, _Up>),
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(static_cast<common_type_t<_Tp, _Up>>(_CUDA_VSTD::declval<_Tp>())),
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(static_cast<common_type_t<_Tp, _Up>>(_CUDA_VSTD::declval<_Up>()))));
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template <class _Tp, class _Up>
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_CCCL_CONCEPT _Common_type_constructible = _CCCL_FRAGMENT(__common_type_constructible_, _Tp, _Up);
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template <class _Tp, class _Up>
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_CCCL_CONCEPT_FRAGMENT(
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__common_with_,
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requires()(
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requires(_Common_type_constructible<_Tp, _Up>),
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requires(same_as<common_type_t<_Tp, _Up>, common_type_t<_Up, _Tp>>),
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requires(common_reference_with<add_lvalue_reference_t<const _Tp>, add_lvalue_reference_t<const _Up>>),
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requires(
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common_reference_with<add_lvalue_reference_t<common_type_t<_Tp, _Up>>,
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common_reference_t<add_lvalue_reference_t<const _Tp>, add_lvalue_reference_t<const _Up>>>)));
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template <class _Tp, class _Up>
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_CCCL_CONCEPT common_with = _CCCL_FRAGMENT(__common_with_, _Tp, _Up);
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#endif // ^^^ !_CCCL_NO_VARIABLE_TEMPLATES
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_LIBCUDACXX_END_NAMESPACE_STD
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#endif // _LIBCUDACXX___CONCEPTS_COMMON_WITH_H
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