1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP___MEMORY_IS_SUFFICIENTLY_ALIGNED_H
11#define _LIBCPP___MEMORY_IS_SUFFICIENTLY_ALIGNED_H
12
13#include <__bit/has_single_bit.h>
14#include <__config>
15#include <__cstddef/size_t.h>
16#include <cstdint>
17
18#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
19# pragma GCC system_header
20#endif
21
22#if _LIBCPP_STD_VER >= 20
23
24_LIBCPP_BEGIN_NAMESPACE_STD
25
26template <size_t _Alignment, class _Tp>
27[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool __is_sufficiently_aligned(_Tp* __ptr) {
28 static_assert(std::has_single_bit(t: _Alignment), "alignment must be a power of two.");
29
30 return reinterpret_cast<uintptr_t>(__ptr) % _Alignment == 0;
31}
32
33# if _LIBCPP_STD_VER >= 26
34
35template <size_t _Alignment, class _Tp>
36[[nodiscard]] _LIBCPP_HIDE_FROM_ABI bool is_sufficiently_aligned(_Tp* __ptr) {
37 return std::__is_sufficiently_aligned<_Alignment>(__ptr);
38}
39
40# endif // _LIBCPP_STD_VER >= 26
41
42_LIBCPP_END_NAMESPACE_STD
43
44#endif // _LIBCPP_STD_VER >= 20
45
46#endif // _LIBCPP___MEMORY_IS_SUFFICIENTLY_ALIGNED_H
47