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1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef _LIBCPP___ALGORITHM_CLAMP_H10#define _LIBCPP___ALGORITHM_CLAMP_H11 12#include <__algorithm/comp.h>13#include <__assert>14#include <__config>15 16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)17# pragma GCC system_header18#endif19 20_LIBCPP_BEGIN_NAMESPACE_STD21 22#if _LIBCPP_STD_VER >= 1723template <class _Tp, class _Compare>24[[nodiscard]] inline _LIBCPP_HIDE_FROM_ABI constexpr const _Tp&25clamp(_LIBCPP_LIFETIMEBOUND const _Tp& __v,26 _LIBCPP_LIFETIMEBOUND const _Tp& __lo,27 _LIBCPP_LIFETIMEBOUND const _Tp& __hi,28 _Compare __comp) {29 _LIBCPP_ASSERT_ARGUMENT_WITHIN_DOMAIN(!__comp(__hi, __lo), "Bad bounds passed to std::clamp");30 return __comp(__v, __lo) ? __lo : __comp(__hi, __v) ? __hi : __v;31}32 33template <class _Tp>34[[nodiscard]] inline _LIBCPP_HIDE_FROM_ABI constexpr const _Tp&35clamp(_LIBCPP_LIFETIMEBOUND const _Tp& __v,36 _LIBCPP_LIFETIMEBOUND const _Tp& __lo,37 _LIBCPP_LIFETIMEBOUND const _Tp& __hi) {38 return std::clamp(__v, __lo, __hi, __less<>());39}40#endif41 42_LIBCPP_END_NAMESPACE_STD43 44#endif // _LIBCPP___ALGORITHM_CLAMP_H45