34#ifndef _GLIBCXX_EXPERIMENTAL_TYPE_TRAITS
35#define _GLIBCXX_EXPERIMENTAL_TYPE_TRAITS 1
37#pragma GCC system_header
39#if __cplusplus >= 201402L
44namespace std _GLIBCXX_VISIBILITY(default)
46_GLIBCXX_BEGIN_NAMESPACE_VERSION
50inline namespace fundamentals_v1
52#define __cpp_lib_experimental_type_trait_variable_templates 201402
55template <
typename _Tp>
56 constexpr bool is_void_v = is_void<_Tp>::value;
57template <
typename _Tp>
58 constexpr bool is_null_pointer_v = is_null_pointer<_Tp>::value;
59template <
typename _Tp>
60 constexpr bool is_integral_v = is_integral<_Tp>::value;
61template <
typename _Tp>
62 constexpr bool is_floating_point_v = is_floating_point<_Tp>::value;
63template <
typename _Tp>
64 constexpr bool is_array_v = is_array<_Tp>::value;
65template <
typename _Tp>
66 constexpr bool is_pointer_v = is_pointer<_Tp>::value;
67template <
typename _Tp>
68 constexpr bool is_lvalue_reference_v = is_lvalue_reference<_Tp>::value;
69template <
typename _Tp>
70 constexpr bool is_rvalue_reference_v = is_rvalue_reference<_Tp>::value;
71template <
typename _Tp>
72 constexpr bool is_member_object_pointer_v =
73 is_member_object_pointer<_Tp>::value;
74template <
typename _Tp>
75 constexpr bool is_member_function_pointer_v =
76 is_member_function_pointer<_Tp>::value;
77template <
typename _Tp>
78 constexpr bool is_enum_v = is_enum<_Tp>::value;
79template <
typename _Tp>
80 constexpr bool is_union_v = is_union<_Tp>::value;
81template <
typename _Tp>
82 constexpr bool is_class_v = is_class<_Tp>::value;
83template <
typename _Tp>
84 constexpr bool is_function_v = is_function<_Tp>::value;
87template <
typename _Tp>
88 constexpr bool is_reference_v = is_reference<_Tp>::value;
89template <
typename _Tp>
90 constexpr bool is_arithmetic_v = is_arithmetic<_Tp>::value;
91template <
typename _Tp>
92 constexpr bool is_fundamental_v = is_fundamental<_Tp>::value;
93template <
typename _Tp>
94 constexpr bool is_object_v = is_object<_Tp>::value;
95template <
typename _Tp>
96 constexpr bool is_scalar_v = is_scalar<_Tp>::value;
97template <
typename _Tp>
98 constexpr bool is_compound_v = is_compound<_Tp>::value;
99template <
typename _Tp>
100 constexpr bool is_member_pointer_v = is_member_pointer<_Tp>::value;
103template <
typename _Tp>
104 constexpr bool is_const_v = is_const<_Tp>::value;
105template <
typename _Tp>
106 constexpr bool is_volatile_v = is_volatile<_Tp>::value;
107template <
typename _Tp>
108 constexpr bool is_trivial_v = is_trivial<_Tp>::value;
109template <
typename _Tp>
110 constexpr bool is_trivially_copyable_v = is_trivially_copyable<_Tp>::value;
111template <
typename _Tp>
112 constexpr bool is_standard_layout_v = is_standard_layout<_Tp>::value;
113#pragma GCC diagnostic push
114#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
115template <
typename _Tp>
116 constexpr bool is_pod_v = is_pod<_Tp>::value;
117#pragma GCC diagnostic pop
118template <
typename _Tp>
119 constexpr bool is_literal_type_v = is_literal_type<_Tp>::value;
120template <
typename _Tp>
121 constexpr bool is_empty_v = is_empty<_Tp>::value;
122template <
typename _Tp>
123 constexpr bool is_polymorphic_v = is_polymorphic<_Tp>::value;
124template <
typename _Tp>
125 constexpr bool is_abstract_v = is_abstract<_Tp>::value;
126template <
typename _Tp>
127 constexpr bool is_final_v = is_final<_Tp>::value;
128template <
typename _Tp>
129 constexpr bool is_signed_v = is_signed<_Tp>::value;
130template <
typename _Tp>
131 constexpr bool is_unsigned_v = is_unsigned<_Tp>::value;
132template <
typename _Tp,
typename... _Args>
133 constexpr bool is_constructible_v = is_constructible<_Tp, _Args...>::value;
134template <
typename _Tp>
135 constexpr bool is_default_constructible_v =
136 is_default_constructible<_Tp>::value;
137template <
typename _Tp>
138 constexpr bool is_copy_constructible_v = is_copy_constructible<_Tp>::value;
139template <
typename _Tp>
140 constexpr bool is_move_constructible_v = is_move_constructible<_Tp>::value;
141template <
typename _Tp,
typename _Up>
142 constexpr bool is_assignable_v = is_assignable<_Tp, _Up>::value;
143template <
typename _Tp>
144 constexpr bool is_copy_assignable_v = is_copy_assignable<_Tp>::value;
145template <
typename _Tp>
146 constexpr bool is_move_assignable_v = is_move_assignable<_Tp>::value;
147template <
typename _Tp>
148 constexpr bool is_destructible_v = is_destructible<_Tp>::value;
149template <
typename _Tp,
typename... _Args>
150 constexpr bool is_trivially_constructible_v =
151 is_trivially_constructible<_Tp, _Args...>::value;
152template <
typename _Tp>
153 constexpr bool is_trivially_default_constructible_v =
154 is_trivially_default_constructible<_Tp>::value;
155template <
typename _Tp>
156 constexpr bool is_trivially_copy_constructible_v =
157 is_trivially_copy_constructible<_Tp>::value;
158template <
typename _Tp>
159 constexpr bool is_trivially_move_constructible_v =
160 is_trivially_move_constructible<_Tp>::value;
161template <
typename _Tp,
typename _Up>
162 constexpr bool is_trivially_assignable_v =
163 is_trivially_assignable<_Tp, _Up>::value;
164template <
typename _Tp>
165 constexpr bool is_trivially_copy_assignable_v =
166 is_trivially_copy_assignable<_Tp>::value;
167template <
typename _Tp>
168 constexpr bool is_trivially_move_assignable_v =
169 is_trivially_move_assignable<_Tp>::value;
170template <
typename _Tp>
171 constexpr bool is_trivially_destructible_v =
172 is_trivially_destructible<_Tp>::value;
173template <
typename _Tp,
typename... _Args>
174 constexpr bool is_nothrow_constructible_v =
175 is_nothrow_constructible<_Tp, _Args...>::value;
176template <
typename _Tp>
177 constexpr bool is_nothrow_default_constructible_v =
178 is_nothrow_default_constructible<_Tp>::value;
179template <
typename _Tp>
180 constexpr bool is_nothrow_copy_constructible_v =
181 is_nothrow_copy_constructible<_Tp>::value;
182template <
typename _Tp>
183 constexpr bool is_nothrow_move_constructible_v =
184 is_nothrow_move_constructible<_Tp>::value;
185template <
typename _Tp,
typename _Up>
186 constexpr bool is_nothrow_assignable_v =
187 is_nothrow_assignable<_Tp, _Up>::value;
188template <
typename _Tp>
189 constexpr bool is_nothrow_copy_assignable_v =
190 is_nothrow_copy_assignable<_Tp>::value;
191template <
typename _Tp>
192 constexpr bool is_nothrow_move_assignable_v =
193 is_nothrow_move_assignable<_Tp>::value;
194template <
typename _Tp>
195 constexpr bool is_nothrow_destructible_v =
196 is_nothrow_destructible<_Tp>::value;
197template <
typename _Tp>
198 constexpr bool has_virtual_destructor_v =
199 has_virtual_destructor<_Tp>::value;
202template <
typename _Tp>
203 constexpr size_t alignment_of_v = alignment_of<_Tp>::value;
204template <
typename _Tp>
205 constexpr size_t rank_v = rank<_Tp>::value;
206template <
typename _Tp,
unsigned _Idx = 0>
207 constexpr size_t extent_v = extent<_Tp, _Idx>::value;
210template <
typename _Tp,
typename _Up>
211 constexpr bool is_same_v = is_same<_Tp, _Up>::value;
212template <
typename _Base,
typename _Derived>
213 constexpr bool is_base_of_v = is_base_of<_Base, _Derived>::value;
214template <
typename _From,
typename _To>
215 constexpr bool is_convertible_v = is_convertible<_From, _To>::value;
225inline namespace fundamentals_v2
227#define __cpp_lib_experimental_detect 201505
231template<
typename...>
using void_t = void;
233#pragma GCC diagnostic push
234#pragma GCC diagnostic ignored "-Wctor-dtor-privacy"
235struct __nonesuchbase {};
236struct nonesuch :
private __nonesuchbase
238 ~nonesuch() =
delete;
239 nonesuch(nonesuch
const&) =
delete;
240 void operator=(nonesuch
const&) =
delete;
242#pragma GCC diagnostic pop
244template<
template<
typename...>
class _Op,
typename... _Args>
248template<
template<
typename...>
class _Op,
typename... _Args>
249 constexpr bool is_detected_v = is_detected<_Op, _Args...>::value;
251template<
template<
typename...>
class _Op,
typename... _Args>
255template<
typename _Default,
template<
typename...>
class _Op,
typename... _Args>
258template<
typename _Default,
template<
typename...>
class _Op,
typename... _Args>
259 using detected_or_t =
typename detected_or<_Default, _Op, _Args...>::type;
261template<
typename _Expected,
template<
typename...>
class _Op,
typename... _Args>
262 using is_detected_exact = is_same<_Expected, detected_t<_Op, _Args...>>;
264template<
typename _Expected,
template<
typename...>
class _Op,
typename... _Args>
265 constexpr bool is_detected_exact_v
266 = is_detected_exact<_Expected, _Op, _Args...>::value;
268template<
typename _To,
template<
typename...>
class _Op,
typename... _Args>
269 using is_detected_convertible
270 = is_convertible<detected_t<_Op, _Args...>, _To>;
272template<
typename _To,
template<
typename...>
class _Op,
typename... _Args>
273 constexpr bool is_detected_convertible_v
274 = is_detected_convertible<_To, _Op, _Args...>::value;
276#define __cpp_lib_experimental_logical_traits 201511
278template<
typename... _Bn>
283template<
typename... _Bn>
288template<
typename _Pp>
293template<
typename... _Bn>
294 constexpr bool conjunction_v
295 = conjunction<_Bn...>::value;
297template<
typename... _Bn>
298 constexpr bool disjunction_v
299 = disjunction<_Bn...>::value;
301template<
typename _Pp>
302 constexpr bool negation_v
303 = negation<_Pp>::value;
307_GLIBCXX_END_NAMESPACE_VERSION
void void_t
A metafunction that always yields void, used for detecting valid types.
ISO C++ entities toplevel namespace is std.
Implementation of the detection idiom (negative case).