Warning: This file is not a C or C++ file. It does not have highlighting.
| 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_MAKE_SIGNED_H |
| 10 | #define _LIBCPP___TYPE_TRAITS_MAKE_SIGNED_H |
| 11 | |
| 12 | #include <__config> |
| 13 | #include <__type_traits/copy_cv.h> |
| 14 | #include <__type_traits/is_enum.h> |
| 15 | #include <__type_traits/is_integral.h> |
| 16 | #include <__type_traits/remove_cv.h> |
| 17 | #include <__type_traits/type_list.h> |
| 18 | |
| 19 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 20 | # pragma GCC system_header |
| 21 | #endif |
| 22 | |
| 23 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 24 | |
| 25 | #if __has_builtin(__make_signed) |
| 26 | |
| 27 | template <class _Tp> |
| 28 | using __make_signed_t _LIBCPP_NODEBUG = __make_signed(_Tp); |
| 29 | |
| 30 | #else |
| 31 | using __signed_types = |
| 32 | __type_list<signed char, |
| 33 | signed short, |
| 34 | signed int, |
| 35 | signed long, |
| 36 | signed long long |
| 37 | # if _LIBCPP_HAS_INT128 |
| 38 | , |
| 39 | __int128_t |
| 40 | # endif |
| 41 | >; |
| 42 | |
| 43 | template <class _Tp, bool = is_integral<_Tp>::value || is_enum<_Tp>::value> |
| 44 | struct __make_signed{}; |
| 45 | |
| 46 | template <class _Tp> |
| 47 | struct __make_signed<_Tp, true> { |
| 48 | typedef typename __find_first<__signed_types, sizeof(_Tp)>::type type; |
| 49 | }; |
| 50 | |
| 51 | // clang-format off |
| 52 | template <> struct __make_signed<bool, true> {}; |
| 53 | template <> struct __make_signed< signed short, true> {typedef short type;}; |
| 54 | template <> struct __make_signed<unsigned short, true> {typedef short type;}; |
| 55 | template <> struct __make_signed< signed int, true> {typedef int type;}; |
| 56 | template <> struct __make_signed<unsigned int, true> {typedef int type;}; |
| 57 | template <> struct __make_signed< signed long, true> {typedef long type;}; |
| 58 | template <> struct __make_signed<unsigned long, true> {typedef long type;}; |
| 59 | template <> struct __make_signed< signed long long, true> {typedef long long type;}; |
| 60 | template <> struct __make_signed<unsigned long long, true> {typedef long long type;}; |
| 61 | # if _LIBCPP_HAS_INT128 |
| 62 | template <> struct __make_signed<__int128_t, true> {typedef __int128_t type;}; |
| 63 | template <> struct __make_signed<__uint128_t, true> {typedef __int128_t type;}; |
| 64 | # endif |
| 65 | // clang-format on |
| 66 | |
| 67 | template <class _Tp> |
| 68 | using __make_signed_t = __copy_cv_t<_Tp, typename __make_signed<__remove_cv_t<_Tp> >::type>; |
| 69 | |
| 70 | #endif // __has_builtin(__make_signed) |
| 71 | |
| 72 | template <class _Tp> |
| 73 | struct _LIBCPP_NO_SPECIALIZATIONS make_signed { |
| 74 | using type _LIBCPP_NODEBUG = __make_signed_t<_Tp>; |
| 75 | }; |
| 76 | |
| 77 | #if _LIBCPP_STD_VER >= 14 |
| 78 | template <class _Tp> |
| 79 | using make_signed_t = __make_signed_t<_Tp>; |
| 80 | #endif |
| 81 | |
| 82 | _LIBCPP_END_NAMESPACE_STD |
| 83 | |
| 84 | #endif // _LIBCPP___TYPE_TRAITS_MAKE_SIGNED_H |
| 85 |
Warning: This file is not a C or C++ file. It does not have highlighting.