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 2206c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 17 23fe6060f1SDimitry Andric template <class _Tp, class _Compare> 24*0fca6ea1SDimitry Andric [[nodiscard]] inline _LIBCPP_HIDE_FROM_ABI constexpr const _Tp& 255f757f3fSDimitry Andric clamp(_LIBCPP_LIFETIMEBOUND const _Tp& __v, 265f757f3fSDimitry Andric _LIBCPP_LIFETIMEBOUND const _Tp& __lo, 275f757f3fSDimitry Andric _LIBCPP_LIFETIMEBOUND const _Tp& __hi, 285f757f3fSDimitry Andric _Compare __comp) { 297a6dacacSDimitry Andric _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(!__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 template <class _Tp> 34*0fca6ea1SDimitry Andric [[nodiscard]] inline _LIBCPP_HIDE_FROM_ABI constexpr const _Tp& 355f757f3fSDimitry Andric clamp(_LIBCPP_LIFETIMEBOUND const _Tp& __v, 365f757f3fSDimitry Andric _LIBCPP_LIFETIMEBOUND const _Tp& __lo, 375f757f3fSDimitry Andric _LIBCPP_LIFETIMEBOUND const _Tp& __hi) { 385f757f3fSDimitry Andric return std::clamp(__v, __lo, __hi, __less<>()); 39fe6060f1SDimitry Andric } 40fe6060f1SDimitry Andric #endif 41fe6060f1SDimitry Andric 42fe6060f1SDimitry Andric _LIBCPP_END_NAMESPACE_STD 43fe6060f1SDimitry Andric 44fe6060f1SDimitry Andric #endif // _LIBCPP___ALGORITHM_CLAMP_H 45