| Yi Kong | 878f994 | 2023-12-13 12:55:04 +0900 | [diff] [blame^] | 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___BIT_BLSR_H |
| 10 | #define _LIBCPP___BIT_BLSR_H |
| 11 | |
| 12 | #include <__config> |
| 13 | |
| 14 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 15 | # pragma GCC system_header |
| 16 | #endif |
| 17 | |
| 18 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 19 | |
| 20 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unsigned __libcpp_blsr(unsigned __x) _NOEXCEPT { |
| 21 | return __x ^ (__x & -__x); |
| 22 | } |
| 23 | |
| 24 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unsigned long __libcpp_blsr(unsigned long __x) _NOEXCEPT { |
| 25 | return __x ^ (__x & -__x); |
| 26 | } |
| 27 | |
| 28 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unsigned long long __libcpp_blsr(unsigned long long __x) _NOEXCEPT { |
| 29 | return __x ^ (__x & -__x); |
| 30 | } |
| 31 | |
| 32 | _LIBCPP_END_NAMESPACE_STD |
| 33 | |
| 34 | #endif // _LIBCPP___BIT_BLSR_H |