1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___TYPE_TRAITS_MAKE_SIGNED_H
#define _LIBCPP___TYPE_TRAITS_MAKE_SIGNED_H
#include <__config>
#include <__type_traits/apply_cv.h>
#include <__type_traits/is_enum.h>
#include <__type_traits/is_integral.h>
#include <__type_traits/nat.h>
#include <__type_traits/remove_cv.h>
#include <__type_traits/type_list.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if __has_builtin(__make_signed)
template <class _Tp>
using __make_signed_t = __make_signed(_Tp);
#else
// clang-format off
typedef __type_list<signed char,
__type_list<signed short,
__type_list<signed int,
__type_list<signed long,
__type_list<signed long long,
# ifndef _LIBCPP_HAS_NO_INT128
__type_list<__int128_t,
# endif
__nat
# ifndef _LIBCPP_HAS_NO_INT128
>
# endif
> > > > > __signed_types;
// clang-format on
template <class _Tp, bool = is_integral<_Tp>::value || is_enum<_Tp>::value>
struct __make_signed{};
template <class _Tp>
struct __make_signed<_Tp, true> {
typedef typename __find_first<__signed_types, sizeof(_Tp)>::type type;
};
// clang-format off
template <> struct __make_signed<bool, true> {};
template <> struct __make_signed< signed short, true> {typedef short type;};
template <> struct __make_signed<unsigned short, true> {typedef short type;};
template <> struct __make_signed< signed int, true> {typedef int type;};
template <> struct __make_signed<unsigned int, true> {typedef int type;};
template <> struct __make_signed< signed long, true> {typedef long type;};
template <> struct __make_signed<unsigned long, true> {typedef long type;};
template <> struct __make_signed< signed long long, true> {typedef long long type;};
template <> struct __make_signed<unsigned long long, true> {typedef long long type;};
# ifndef _LIBCPP_HAS_NO_INT128
template <> struct __make_signed<__int128_t, true> {typedef __int128_t type;};
template <> struct __make_signed<__uint128_t, true> {typedef __int128_t type;};
# endif
// clang-format on
template <class _Tp>
using __make_signed_t = __apply_cv_t<_Tp, typename __make_signed<__remove_cv_t<_Tp> >::type>;
#endif // __has_builtin(__make_signed)
template <class _Tp>
struct make_signed {
using type _LIBCPP_NODEBUG = __make_signed_t<_Tp>;
};
#if _LIBCPP_STD_VER >= 14
template <class _Tp>
using make_signed_t = __make_signed_t<_Tp>;
#endif
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___TYPE_TRAITS_MAKE_SIGNED_H
|
