libcxx/include/__utility/auto_cast.h

   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___UTILITY_AUTO_CAST_H
  11 #define _LIBCPP___UTILITY_AUTO_CAST_H
  12
  13 #include <__config>
  14 #include <__type_traits/decay.h>
  15
  16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  17 #  pragma GCC system_header
  18 #endif
  19
  20 #define _LIBCPP_AUTO_CAST(expr) static_cast<::std::__decay_t<decltype((expr))> >(expr)
  21
  22 #endif // _LIBCPP___UTILITY_AUTO_CAST_H