libcxx/include/__bit/invert_if.h

   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_INVERT_IF_H
  10 #define _LIBCPP___BIT_INVERT_IF_H
  11
  12 #include <__concepts/arithmetic.h>
  13 #include <__config>
  14
  15 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  16 #  pragma GCC system_header
  17 #endif
  18
  19 _LIBCPP_BEGIN_NAMESPACE_STD
  20
  21 template <bool _Invert, class _Tp>
  22 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Tp __invert_if(_Tp __v) {
  23   if (_Invert)
  24     return ~__v;
  25   return __v;
  26 }
  27
  28 _LIBCPP_END_NAMESPACE_STD
  29
  30 #endif // _LIBCPP___BIT_INVERT_IF_H