v1/__bit/invert_if.h

0001 //===----------------------------------------------------------------------===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008
0009 #ifndef _LIBCPP___BIT_INVERT_IF_H
0010 #define _LIBCPP___BIT_INVERT_IF_H
0011
0012 #include <__concepts/arithmetic.h>
0013 #include <__config>
0014
0015 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0016 #  pragma GCC system_header
0017 #endif
0018
0019 _LIBCPP_BEGIN_NAMESPACE_STD
0020
0021 template <bool _Invert, class _Tp>
0022 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp __invert_if(_Tp __v) {
0023   if (_Invert)
0024     return ~__v;
0025   return __v;
0026 }
0027
0028 _LIBCPP_END_NAMESPACE_STD
0029
0030 #endif // _LIBCPP___BIT_INVERT_IF_H