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Diffstat (limited to 'contrib/llvm-project/libcxx/include/__algorithm/clamp.h')
-rw-r--r-- | contrib/llvm-project/libcxx/include/__algorithm/clamp.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/contrib/llvm-project/libcxx/include/__algorithm/clamp.h b/contrib/llvm-project/libcxx/include/__algorithm/clamp.h new file mode 100644 index 000000000000..f8eba03cf890 --- /dev/null +++ b/contrib/llvm-project/libcxx/include/__algorithm/clamp.h @@ -0,0 +1,52 @@ +//===----------------------------------------------------------------------===// +// +// 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_CLAMP_H +#define _LIBCPP___ALGORITHM_CLAMP_H + +#include <__config> +#include <__debug> +#include <__algorithm/comp.h> + +#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) +#pragma GCC system_header +#endif + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + +_LIBCPP_BEGIN_NAMESPACE_STD + +#if _LIBCPP_STD_VER > 14 +// clamp +template<class _Tp, class _Compare> +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +const _Tp& +clamp(const _Tp& __v, const _Tp& __lo, const _Tp& __hi, _Compare __comp) +{ + _LIBCPP_ASSERT(!__comp(__hi, __lo), "Bad bounds passed to std::clamp"); + return __comp(__v, __lo) ? __lo : __comp(__hi, __v) ? __hi : __v; + +} + +template<class _Tp> +_LIBCPP_NODISCARD_EXT inline +_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR +const _Tp& +clamp(const _Tp& __v, const _Tp& __lo, const _Tp& __hi) +{ + return _VSTD::clamp(__v, __lo, __hi, __less<_Tp>()); +} +#endif + +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + +#endif // _LIBCPP___ALGORITHM_CLAMP_H |