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5d4439cc3e
release/17.x branch, commit 8f4dd44097c9ae25dd203d5ac87f3b48f854bba8 This adds the flag `-D_LIBCPP_PSTL_CPU_BACKEND_SERIAL`. A future enhancement could possibly pass something different if there is a compelling parallel implementation. That libdispatch one might be worth looking into.
40 lines
1.2 KiB
C++
Vendored
40 lines
1.2 KiB
C++
Vendored
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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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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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___UTILITY_TO_UNDERLYING_H
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#define _LIBCPP___UTILITY_TO_UNDERLYING_H
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#include <__config>
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#include <__type_traits/underlying_type.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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#ifndef _LIBCPP_CXX03_LANG
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template <class _Tp>
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_LIBCPP_INLINE_VISIBILITY constexpr typename underlying_type<_Tp>::type
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__to_underlying(_Tp __val) noexcept {
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return static_cast<typename underlying_type<_Tp>::type>(__val);
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}
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#endif // !_LIBCPP_CXX03_LANG
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#if _LIBCPP_STD_VER >= 23
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template <class _Tp>
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_LIBCPP_NODISCARD_EXT _LIBCPP_INLINE_VISIBILITY constexpr underlying_type_t<_Tp>
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to_underlying(_Tp __val) noexcept {
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return _VSTD::__to_underlying(__val);
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}
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#endif
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___UTILITY_TO_UNDERLYING_H
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