19 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20, cxx23) (cxx98 == 0 ? defined(__cpp_##macro)…  macro
21 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20, cxx23) (cxx11 == 0 ? defined(__cpp_##macro)…  macro
23 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20, cxx23) (cxx14 == 0 ? defined(__cpp_##macro)…  macro
25 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20, cxx23) (cxx17 == 0 ? defined(__cpp_##macro)…  macro
27 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20, cxx23) (cxx20 == 0 ? defined(__cpp_##macro)…  macro
29 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20, cxx23) (cxx23 == 0 ? defined(__cpp_##macro)…  macro
34 #if check(implicit_move, 0, 0, 0, 0, 0, 202011)
38 #if check(size_t_suffix, 0, 0, 0, 0, 0, 202011)
44 #if check(aggregate_paren_init, 0, 0, 0, 0, 0, 0)
49 #if defined(CHAR8_T) ? check(char8_t, 201811, 201811, 201811, 201811, 201811, 201811) : \
50     defined(NO_CHAR8_T) ? check(char8_t, 0, 0, 0, 0, 0, 0) : \
51     check(char8_t, 0, 0, 0, 0, 201811, 201811)
55 #if check(concepts, 0, 0, 0, 0, 201907, 201907)
59 #if check(conditional_explicit, 0, 0, 0, 0, 201806, 201806)
63 #if check(consteval, 0, 0, 0, 0, 0, 0)
70 #if check(constexpr_dynamic_alloc, 0, 0, 0, 0, 201907, 201907)
74 #if check(constexpr_in_decltype, 0, 201711, 201711, 201711, 201711, 201711)
78 #if check(constinit, 0, 0, 0, 0, 201907, 201907)
84 #if check(designated_initializers, 0, 0, 0, 0, 201707, 201707)
90 #if check(impl_destroying_delete, 201806, 201806, 201806, 201806, 201806, 201806)
94 #if check(impl_three_way_comparison, 0, 0, 0, 0, 201907, 201907)
98 #if check(impl_coroutine, 0, 0, 0, 0, 201902L, 201902L)
104 #if check(modules, 0, 0, 0, 0, 0, 0)
109 #if check(using_enum, 0, 0, 0, 0, 201907, 201907)
115 #if check(hex_float, 0, 0, 0, 201603, 201603, 201603)
119 #if check(inline_variables, 0, 0, 0, 201606, 201606, 201606)
123 #if check(aligned_new, 0, 0, 0, 201606, 201606, 201606)
127 #if check(guaranteed_copy_elision, 0, 0, 0, 201606, 201606, 201606)
131 #if check(noexcept_function_type, 0, 0, 0, 201510, 201510, 201510)
135 #if check(fold_expressions, 0, 0, 0, 201603, 201603, 201603)
139 #if check(capture_star_this, 0, 0, 0, 201603, 201603, 201603)
145 #if check(if_constexpr, 0, 0, 0, 201606, 201606, 201606)
153 #if check(deduction_guides, 0, 0, 0, 201703, 201703, 201703)
158 #if check(nontype_template_parameter_auto, 0, 0, 0, 201606, 201606, 201606)
164 #if check(template_auto, 0, 0, 0, 201606, 201606, 201606)
168 #if check(namespace_attributes, 0, 0, 0, 201411, 201411, 201411)
173 #if check(enumerator_attributes, 0, 0, 0, 201411, 201411, 201411)
179 #if check(nested_namespace_definitions, 0, 0, 0, 201411, 201411, 201411)
185 #if check(variadic_using, 0, 0, 0, 201611, 201611, 201611)
189 #if check(aggregate_bases, 0, 0, 0, 201603, 201603, 201603)
193 #if check(structured_bindings, 0, 0, 0, 201606, 201606, 201606)
197 #if check(nontype_template_args, 0, 0, 0, 201411, 201411, 201411)
203     ? check(template_template_args, 0, 0, 0, 201611, 201611, 201611) \
204     : check(template_template_args, 0, 0, 0, 0, 0, 0)
210 #if check(binary_literals, 0, 0, 201304, 201304, 201304, 201304)
215 #if check(digit_separators, 0, 0, 201309, 201309, 201309, 201309)
219 #if check(init_captures, 0, 0, 201304, 201304, 201803, 201803)
223 #if check(generic_lambdas, 0, 0, 201304, 201304, 201707, 201707)
227 #if check(sized_deallocation, 0, 0, 201309, 201309, 201309, 201309)
233 #if check(decltype_auto, 0, 0, 201304, 201304, 201304, 201304)
237 #if check(return_type_deduction, 0, 0, 201304, 201304, 201304, 201304)
241 #if check(runtime_arrays, 0, 0, 0, 0, 0, 0)
245 #if check(aggregate_nsdmi, 0, 0, 201304, 201304, 201304, 201304)
249 #if check(variable_templates, 0, 0, 201304, 201304, 201304, 201304)
255 #if check(unicode_characters, 0, 200704, 200704, 200704, 200704, 200704)
259 #if check(raw_strings, 0, 200710, 200710, 200710, 200710, 200710)
263 #if check(unicode_literals, 0, 200710, 200710, 200710, 200710, 200710)
267 #if check(user_defined_literals, 0, 200809, 200809, 200809, 200809, 200809)
271 #if defined(NO_THREADSAFE_STATICS) ? check(threadsafe_static_init, 0, 0, 0, 0, 0, 0) : \
272 …                      check(threadsafe_static_init, 200806, 200806, 200806, 200806, 200806, 200806)
276 #if check(lambdas, 0, 200907, 200907, 200907, 200907, 200907)
280 #if check(constexpr, 0, 200704, 201304, 201603, 201907, 202110)
284 #if check(range_based_for, 0, 200907, 200907, 201603, 201603, 201603)
288 #if check(static_assert, 0, 200410, 200410, 201411, 201411, 201411)
292 #if check(decltype, 0, 200707, 200707, 200707, 200707, 200707)
296 #if check(attributes, 0, 200809, 200809, 200809, 200809, 200809)
300 #if check(rvalue_references, 0, 200610, 200610, 200610, 200610, 200610)
304 #if check(variadic_templates, 0, 200704, 200704, 200704, 200704, 200704)
308 #if check(initializer_lists, 0, 200806, 200806, 200806, 200806, 200806)
312 #if check(delegating_constructors, 0, 200604, 200604, 200604, 200604, 200604)
316 #if check(nsdmi, 0, 200809, 200809, 200809, 200809, 200809)
320 #if check(inheriting_constructors, 0, 201511, 201511, 201511, 201511, 201511)
324 #if check(ref_qualifiers, 0, 200710, 200710, 200710, 200710, 200710)
328 #if check(alias_templates, 0, 200704, 200704, 200704, 200704, 200704)
334 #if defined(NO_RTTI) ? check(rtti, 0, 0, 0, 0, 0, 0) : check(rtti, 199711, 199711, 199711, 199711, …
338 #if defined(NO_EXCEPTIONS) ? check(exceptions, 0, 0, 0, 0, 0, 0) : check(exceptions, 199711, 199711…
344 #if defined(COROUTINES) ? check(coroutines, 201703, 201703, 201703, 201703, 201703, 201703) : check…