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-exception 6// 7//===----------------------------------------------------------------------===// 8 9#ifndef _LIBCPP___ALGORITHM_CLAMP_H 10#define _LIBCPP___ALGORITHM_CLAMP_H 11 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_header 18#endif 19 20_LIBCPP_BEGIN_NAMESPACE_STD 21 22#if _LIBCPP_STD_VER > 14 23template<class _Tp, class _Compare> 24_LIBCPP_NODISCARD_EXT inline 25_LIBCPP_INLINE_VISIBILITY constexpr 26const _Tp& 27clamp(const _Tp& __v, const _Tp& __lo, const _Tp& __hi, _Compare __comp) 28{ 29 _LIBCPP_ASSERT(!__comp(__hi, __lo), "Bad bounds passed to std::clamp"); 30 return __comp(__v, __lo) ? __lo : __comp(__hi, __v) ? __hi : __v; 31 32} 33 34template<class _Tp> 35_LIBCPP_NODISCARD_EXT inline 36_LIBCPP_INLINE_VISIBILITY constexpr 37const _Tp& 38clamp(const _Tp& __v, const _Tp& __lo, const _Tp& __hi) 39{ 40 return _VSTD::clamp(__v, __lo, __hi, __less<_Tp>()); 41} 42#endif 43 44_LIBCPP_END_NAMESPACE_STD 45 46#endif // _LIBCPP___ALGORITHM_CLAMP_H 47