18 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20) (cxx98 == 0 ? defined(__cpp_##macro) : __cp…  macro
20 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20) (cxx11 == 0 ? defined(__cpp_##macro) : __cp…  macro
22 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20) (cxx14 == 0 ? defined(__cpp_##macro) : __cp…  macro
24 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20) (cxx17 == 0 ? defined(__cpp_##macro) : __cp…  macro
26 #define check(macro, cxx98, cxx11, cxx14, cxx17, cxx20) (cxx20 == 0 ? defined(__cpp_##macro) : __cp…  macro
31 #if defined(CHAR8_T) ? check(char8_t, 201811, 201811, 201811, 201811, 201811) : \
32     defined(NO_CHAR8_T) ? check(char8_t, 0, 0, 0, 0, 0) : \
33     check(char8_t, 0, 0, 0, 0, 201811)
37 #if check(conditional_explicit, 0, 0, 0, 0, 201806)
43 #if check(constexpr_dynamic_alloc, 0, 0, 0, 0, 201907)
47 #if check(constexpr_in_decltype, 0, 201711, 201711, 201711, 201711)
51 #if check(constinit, 0, 0, 0, 0, 201907)
55 #if check(designated_initializers, 0, 0, 0, 0, 201707)
61 #if check(impl_destroying_delete, 201806, 201806, 201806, 201806, 201806)
65 #if check(impl_three_way_comparison, 0, 0, 0, 0, 201907)
71 #if check(concepts, 0, 0, 0, 0, 201907)
77 #if check(hex_float, 0, 0, 0, 201603, 201603)
81 #if check(inline_variables, 0, 0, 0, 201606, 201606)
85 #if check(aligned_new, 0, 0, 0, 201606, 201606)
89 #if check(guaranteed_copy_elision, 0, 0, 0, 201606, 201606)
93 #if check(noexcept_function_type, 0, 0, 0, 201510, 201510)
97 #if check(fold_expressions, 0, 0, 0, 201603, 201603)
101 #if check(capture_star_this, 0, 0, 0, 201603, 201603)
107 #if check(if_constexpr, 0, 0, 0, 201606, 201606)
115 #if check(deduction_guides, 0, 0, 0, 201703, 201703)
119 #if check(nontype_template_parameter_auto, 0, 0, 0, 201606, 201606)
125 #if check(template_auto, 0, 0, 0, 201606, 201606)
129 #if check(namespace_attributes, 0, 0, 0, 201411, 201411)
134 #if check(enumerator_attributes, 0, 0, 0, 201411, 201411)
140 #if check(nested_namespace_definitions, 0, 0, 0, 201411, 201411)
146 #if check(variadic_using, 0, 0, 0, 201611, 201611)
150 #if check(aggregate_bases, 0, 0, 0, 201603, 201603)
154 #if check(structured_bindings, 0, 0, 0, 201606, 201606)
158 #if check(nontype_template_args, 0, 0, 0, 201411, 201411)
163     ? check(template_template_args, 0, 0, 0, 201611, 201611) \
164     : check(template_template_args, 0, 0, 0, 0, 0)
170 #if check(binary_literals, 0, 0, 201304, 201304, 201304)
175 #if check(digit_separators, 0, 0, 201309, 201309, 201309)
179 #if check(init_captures, 0, 0, 201304, 201304, 201803)
183 #if check(generic_lambdas, 0, 0, 201304, 201304, 201707)
187 #if check(sized_deallocation, 0, 0, 201309, 201309, 201309)
193 #if check(decltype_auto, 0, 0, 201304, 201304, 201304)
197 #if check(return_type_deduction, 0, 0, 201304, 201304, 201304)
201 #if check(runtime_arrays, 0, 0, 0, 0, 0)
205 #if check(aggregate_nsdmi, 0, 0, 201304, 201304, 201304)
209 #if check(variable_templates, 0, 0, 201304, 201304, 201304)
215 #if check(unicode_characters, 0, 200704, 200704, 200704, 200704)
219 #if check(raw_strings, 0, 200710, 200710, 200710, 200710)
223 #if check(unicode_literals, 0, 200710, 200710, 200710, 200710)
227 #if check(user_defined_literals, 0, 200809, 200809, 200809, 200809)
231 #if defined(NO_THREADSAFE_STATICS) ? check(threadsafe_static_init, 0, 0, 0, 0, 0) : \
232 …                              check(threadsafe_static_init, 200806, 200806, 200806, 200806, 200806)
236 #if check(lambdas, 0, 200907, 200907, 200907, 200907)
240 #if check(constexpr, 0, 200704, 201304, 201603, 201907)
244 #if check(range_based_for, 0, 200907, 200907, 201603, 201603)
248 #if check(static_assert, 0, 200410, 200410, 201411, 201411)
252 #if check(decltype, 0, 200707, 200707, 200707, 200707)
256 #if check(attributes, 0, 200809, 200809, 200809, 200809)
260 #if check(rvalue_references, 0, 200610, 200610, 200610, 200610)
264 #if check(variadic_templates, 0, 200704, 200704, 200704, 200704)
268 #if check(initializer_lists, 0, 200806, 200806, 200806, 200806)
272 #if check(delegating_constructors, 0, 200604, 200604, 200604, 200604)
276 #if check(nsdmi, 0, 200809, 200809, 200809, 200809)
280 #if check(inheriting_constructors, 0, 201511, 201511, 201511, 201511)
284 #if check(ref_qualifiers, 0, 200710, 200710, 200710, 200710)
288 #if check(alias_templates, 0, 200704, 200704, 200704, 200704)
294 #if defined(NO_RTTI) ? check(rtti, 0, 0, 0, 0, 0) : check(rtti, 199711, 199711, 199711, 199711, 199…
298 #if defined(NO_EXCEPTIONS) ? check(exceptions, 0, 0, 0, 0, 0) : check(exceptions, 199711, 199711, 1…
304 #if defined(COROUTINES) ? check(coroutines, 201703L, 201703L, 201703L, 201703L, 201703L) : check(co…