5aa03b648b
This commit does a pass of clang-format over files in libc++ that don't require major changes to conform to our style guide, or for which we're not overly concerned about conflicting with in-flight patches or hindering the git blame. This roughly covers: - benchmarks - range algorithms - concepts - type traits I did a manual verification of all the changes, and in particular I applied clang-format on/off annotations in a few places where the result was less readable after than before. This was not necessary in a lot of places, however I did find that clang-format had pretty bad taste when it comes to formatting concepts. Differential Revision: https://reviews.llvm.org/D153140
60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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_RANGES_CLAMP_H
|
|
#define _LIBCPP___ALGORITHM_RANGES_CLAMP_H
|
|
|
|
#include <__assert>
|
|
#include <__config>
|
|
#include <__functional/identity.h>
|
|
#include <__functional/invoke.h>
|
|
#include <__functional/ranges_operations.h>
|
|
#include <__iterator/concepts.h>
|
|
#include <__iterator/projected.h>
|
|
#include <__utility/forward.h>
|
|
|
|
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
|
|
# pragma GCC system_header
|
|
#endif
|
|
|
|
#if _LIBCPP_STD_VER >= 20
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_STD
|
|
|
|
namespace ranges {
|
|
namespace __clamp {
|
|
struct __fn {
|
|
template <class _Type,
|
|
class _Proj = identity,
|
|
indirect_strict_weak_order<projected<const _Type*, _Proj>> _Comp = ranges::less>
|
|
_LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr const _Type& operator()(
|
|
const _Type& __value, const _Type& __low, const _Type& __high, _Comp __comp = {}, _Proj __proj = {}) const {
|
|
_LIBCPP_ASSERT(!bool(std::invoke(__comp, std::invoke(__proj, __high), std::invoke(__proj, __low))),
|
|
"Bad bounds passed to std::ranges::clamp");
|
|
|
|
if (std::invoke(__comp, std::invoke(__proj, __value), std::invoke(__proj, __low)))
|
|
return __low;
|
|
else if (std::invoke(__comp, std::invoke(__proj, __high), std::invoke(__proj, __value)))
|
|
return __high;
|
|
else
|
|
return __value;
|
|
}
|
|
};
|
|
} // namespace __clamp
|
|
|
|
inline namespace __cpo {
|
|
inline constexpr auto clamp = __clamp::__fn{};
|
|
} // namespace __cpo
|
|
} // namespace ranges
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP_STD_VER >= 20
|
|
|
|
#endif // _LIBCPP___ALGORITHM_RANGES_CLAMP_H
|