xref: /openbsd/gnu/llvm/libcxx/include/__bit/blsr.h (revision 4bdff4be)
1*4bdff4beSrobert //===----------------------------------------------------------------------===//
2*4bdff4beSrobert //
3*4bdff4beSrobert // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4*4bdff4beSrobert // See https://llvm.org/LICENSE.txt for license information.
5*4bdff4beSrobert // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6*4bdff4beSrobert //
7*4bdff4beSrobert //===----------------------------------------------------------------------===//
8*4bdff4beSrobert 
9*4bdff4beSrobert #ifndef _LIBCPP___BIT_BLSR_H
10*4bdff4beSrobert #define _LIBCPP___BIT_BLSR_H
11*4bdff4beSrobert 
12*4bdff4beSrobert #include <__config>
13*4bdff4beSrobert 
14*4bdff4beSrobert #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
15*4bdff4beSrobert #  pragma GCC system_header
16*4bdff4beSrobert #endif
17*4bdff4beSrobert 
18*4bdff4beSrobert _LIBCPP_BEGIN_NAMESPACE_STD
19*4bdff4beSrobert 
__libcpp_blsr(unsigned __x)20*4bdff4beSrobert inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unsigned __libcpp_blsr(unsigned __x) _NOEXCEPT {
21*4bdff4beSrobert   return __x ^ (__x & -__x);
22*4bdff4beSrobert }
23*4bdff4beSrobert 
__libcpp_blsr(unsigned long __x)24*4bdff4beSrobert inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unsigned long __libcpp_blsr(unsigned long __x) _NOEXCEPT {
25*4bdff4beSrobert   return __x ^ (__x & -__x);
26*4bdff4beSrobert }
27*4bdff4beSrobert 
__libcpp_blsr(unsigned long long __x)28*4bdff4beSrobert inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR unsigned long long __libcpp_blsr(unsigned long long __x) _NOEXCEPT {
29*4bdff4beSrobert   return __x ^ (__x & -__x);
30*4bdff4beSrobert }
31*4bdff4beSrobert 
32*4bdff4beSrobert _LIBCPP_END_NAMESPACE_STD
33*4bdff4beSrobert 
34*4bdff4beSrobert #endif // _LIBCPP___BIT_BLSR_H
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