Mercurial > hg > CbC > CbC_llvm
view libcxx/include/__algorithm/ranges_clamp.h @ 236:c4bab56944e8 llvm-original
LLVM 16
author | kono |
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date | Wed, 09 Nov 2022 17:45:10 +0900 |
parents | |
children | 1f2b6ac9f198 |
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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 // //===----------------------------------------------------------------------===// #ifndef _LIBCPP___ALGORITHM_RANGES_CLAMP_H #define _LIBCPP___ALGORITHM_RANGES_CLAMP_H #include <__assert> #include <__config> #include <__functional/identity.h> #include <__functional/invoke.h> #include <__functional/ranges_operations.h> #include <__iterator/concepts.h> #include <__iterator/projected.h> #include <__utility/forward.h> #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) # pragma GCC system_header #endif #if _LIBCPP_STD_VER > 17 _LIBCPP_BEGIN_NAMESPACE_STD namespace ranges { namespace __clamp { struct __fn { template <class _Type, class _Proj = identity, indirect_strict_weak_order<projected<const _Type*, _Proj>> _Comp = ranges::less> _LIBCPP_HIDE_FROM_ABI constexpr const _Type& operator()(const _Type& __value, const _Type& __low, const _Type& __high, _Comp __comp = {}, _Proj __proj = {}) const { _LIBCPP_ASSERT(!bool(std::invoke(__comp, std::invoke(__proj, __high), std::invoke(__proj, __low))), "Bad bounds passed to std::ranges::clamp"); if (std::invoke(__comp, std::invoke(__proj, __value), std::invoke(__proj, __low))) return __low; else if (std::invoke(__comp, std::invoke(__proj, __high), std::invoke(__proj, __value))) return __high; else return __value; } }; } // namespace __clamp inline namespace __cpo { inline constexpr auto clamp = __clamp::__fn{}; } // namespace __cpo } // namespace ranges _LIBCPP_END_NAMESPACE_STD #endif // _LIBCPP_STD_VER > 17 #endif // _LIBCPP___ALGORITHM_RANGES_CLAMP_H