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___TYPE_TRAITS_REMOVE_VOLATILE_H 10#define _LIBCPP___TYPE_TRAITS_REMOVE_VOLATILE_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#if __has_builtin(__remove_volatile) 21template <class _Tp> 22struct remove_volatile { 23 using type _LIBCPP_NODEBUG = __remove_volatile(_Tp); 24}; 25 26template <class _Tp> 27using __remove_volatile_t = __remove_volatile(_Tp); 28#else 29template <class _Tp> 30struct _LIBCPP_TEMPLATE_VIS remove_volatile { 31 typedef _Tp type; 32}; 33template <class _Tp> 34struct _LIBCPP_TEMPLATE_VIS remove_volatile<volatile _Tp> { 35 typedef _Tp type; 36}; 37 38template <class _Tp> 39using __remove_volatile_t = typename remove_volatile<_Tp>::type; 40#endif // __has_builtin(__remove_volatile) 41 42#if _LIBCPP_STD_VER >= 14 43template <class _Tp> 44using remove_volatile_t = __remove_volatile_t<_Tp>; 45#endif 46 47_LIBCPP_END_NAMESPACE_STD 48 49#endif // _LIBCPP___TYPE_TRAITS_REMOVE_VOLATILE_H 50