1fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 2fe6060f1SDimitry Andric // 3fe6060f1SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4fe6060f1SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5fe6060f1SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6fe6060f1SDimitry Andric // 7fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 8fe6060f1SDimitry Andric 9fe6060f1SDimitry Andric #ifndef _LIBCPP___ALGORITHM_CLAMP_H 10fe6060f1SDimitry Andric #define _LIBCPP___ALGORITHM_CLAMP_H 11fe6060f1SDimitry Andric 1204eeddc0SDimitry Andric #include <__algorithm/comp.h> 1381ad6265SDimitry Andric #include <__assert> 14fe6060f1SDimitry Andric #include <__config> 15fe6060f1SDimitry Andric 16fe6060f1SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17fe6060f1SDimitry Andric # pragma GCC system_header 18fe6060f1SDimitry Andric #endif 19fe6060f1SDimitry Andric 20fe6060f1SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 21fe6060f1SDimitry Andric 22*06c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 17 23fe6060f1SDimitry Andric template<class _Tp, class _Compare> 24fe6060f1SDimitry Andric _LIBCPP_NODISCARD_EXT inline 2561cfbce3SDimitry Andric _LIBCPP_INLINE_VISIBILITY constexpr 26fe6060f1SDimitry Andric const _Tp& 27fe6060f1SDimitry Andric clamp(const _Tp& __v, const _Tp& __lo, const _Tp& __hi, _Compare __comp) 28fe6060f1SDimitry Andric { 29*06c3fb27SDimitry Andric _LIBCPP_ASSERT_UNCATEGORIZED(!__comp(__hi, __lo), "Bad bounds passed to std::clamp"); 30fe6060f1SDimitry Andric return __comp(__v, __lo) ? __lo : __comp(__hi, __v) ? __hi : __v; 31fe6060f1SDimitry Andric 32fe6060f1SDimitry Andric } 33fe6060f1SDimitry Andric 34fe6060f1SDimitry Andric template<class _Tp> 35fe6060f1SDimitry Andric _LIBCPP_NODISCARD_EXT inline 3661cfbce3SDimitry Andric _LIBCPP_INLINE_VISIBILITY constexpr 37fe6060f1SDimitry Andric const _Tp& 38fe6060f1SDimitry Andric clamp(const _Tp& __v, const _Tp& __lo, const _Tp& __hi) 39fe6060f1SDimitry Andric { 40*06c3fb27SDimitry Andric return _VSTD::clamp(__v, __lo, __hi, __less<>()); 41fe6060f1SDimitry Andric } 42fe6060f1SDimitry Andric #endif 43fe6060f1SDimitry Andric 44fe6060f1SDimitry Andric _LIBCPP_END_NAMESPACE_STD 45fe6060f1SDimitry Andric 46fe6060f1SDimitry Andric #endif // _LIBCPP___ALGORITHM_CLAMP_H 47