库特性测试宏 (C++20)

 

C++

编译器支持

自立实现与有宿主实现

语言

标准库

标准库标头

具名要求

功能特性测试宏 (C++20)

语言支持库

概念库 (C++20)

元编程库 (C++11)

诊断库

通用工具库

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算法库

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正则表达式库 (C++11)

并发支持库 (C++11)

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符号索引

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工具库

语言支持 类型支持（基本类型、 RTTI） 库功能特性测试宏 (C++20) 动态内存管理 程序工具 协程支持 (C++20) 变参数函数 is_constant_evaluated (C++20) is_within_lifetime (C++26) initializer_list (C++11) source_location (C++20) 三路比较 (C++20) three_way_comparablethree_way_comparable_with (C++20)(C++20) strong_ordering (C++20) weak_ordering (C++20) partial_ordering (C++20) common_comparison_category (C++20) compare_three_way_result (C++20) compare_three_way (C++20) strong_order (C++20) weak_order (C++20) partial_order (C++20) compare_strong_order_fallback (C++20) compare_weak_order_fallback (C++20) compare_partial_order_fallback (C++20) is_eqis_neqis_ltis_lteqis_gtis_gteq (C++20)(C++20)(C++20)(C++20)(C++20)(C++20)

通用工具 日期和时间 函数对象 格式化库 (C++20) bitset hash (C++11) 关系运算符 (C++20 中弃用) rel_ops::operator!=rel_ops::operator> rel_ops::operator<=rel_ops::operator>= 整数比较函数 cmp_equalcmp_lesscmp_less_than (C++20)(C++20)(C++20) cmp_not_equalcmp_greatercmp_greater_than (C++20)(C++20)(C++20) in_range (C++20) swap 与类型运算 swap ranges::swap (C++20) exchange (C++14) declval (C++11) to_underlying (C++23) forward (C++11) forward_like (C++23) move (C++11) move_if_noexcept (C++11) as_const (C++17) 常用词汇类型 pair tuple (C++11) optional (C++17) any (C++17) variant (C++17) tuple_size (C++11) tuple_element (C++11) apply (C++17) make_from_tuple (C++17) expected (C++23) 初等字符串转换 to_chars (C++17) from_chars (C++17) chars_format (C++17) to_chars_result (C++17) from_chars_result (C++17)

 

若包含头文件 <version> 或指定于表中的头文件之一，则定义对应的宏。

宏名	值	头文件
__cpp_lib_addressof_constexpr	201603L	<memory>
__cpp_lib_allocator_traits_is_always_equal	201411L	<memory> <scoped_allocator> <string> <deque> <forward_list> <list> <vector> <map> <set> <unordered_map> <unordered_set>
__cpp_lib_any	201606L	<any>
__cpp_lib_apply	201603L	<tuple>
__cpp_lib_array_constexpr	201811L	<iterator> <array>
__cpp_lib_as_const	201510L	<utility>
__cpp_lib_assume_aligned	201811L	<memory>
__cpp_lib_atomic_flag_test	201907L	<atomic>
__cpp_lib_atomic_float	201711L	<atomic>
__cpp_lib_atomic_is_always_lock_free	201603L	<atomic>
__cpp_lib_atomic_lock_free_type_aliases	201907L	<atomic>
__cpp_lib_atomic_ref	201806L	<atomic>
__cpp_lib_atomic_shared_ptr	201711L	<memory>
__cpp_lib_atomic_value_initialization	201911L	<atomic> <memory>
__cpp_lib_atomic_wait	201907L	<atomic>
__cpp_lib_barrier	201907L	<barrier>
__cpp_lib_bind_front	201907L	<functional>
__cpp_lib_bit_cast	201806L	<bit>
__cpp_lib_bitops	201907L	<bit>
__cpp_lib_bool_constant	201505L	<type_traits>
__cpp_lib_bounded_array_traits	201902L	<type_traits>
__cpp_lib_boyer_moore_searcher	201603L	<functional>
__cpp_lib_byte	201603L	<cstddef>
__cpp_lib_char8_t	201907L	<atomic> <filesystem> <istream> <limits> <locale> <ostream> <string> <string_view>
__cpp_lib_chrono	201907L	<chrono>
__cpp_lib_chrono_udls	201304L	<chrono>
__cpp_lib_clamp	201603L	<algorithm>
__cpp_lib_complex_udls	201309L	<complex>
__cpp_lib_concepts	201907L	<concepts>
__cpp_lib_constexpr_algorithms	201806L	<algorithm>
__cpp_lib_constexpr_complex	201711L	<complex>
__cpp_lib_constexpr_dynamic_alloc	201907L	<memory>
__cpp_lib_constexpr_functional	201907L	<functional>
__cpp_lib_constexpr_iterator	201811L	<iterator>
__cpp_lib_constexpr_memory	201811L	<memory>
__cpp_lib_constexpr_numeric	201911L	<numeric>
__cpp_lib_constexpr_string	201907L	<string>
__cpp_lib_constexpr_string_view	201811L	<string_view>
__cpp_lib_constexpr_tuple	201811L	<tuple>
__cpp_lib_constexpr_utility	201811L	<utility>
__cpp_lib_constexpr_vector	201907L	<vector>
__cpp_lib_destroying_delete	201806L	<new>
__cpp_lib_enable_shared_from_this	201603L	<memory>
__cpp_lib_endian	201907L	<bit>
__cpp_lib_erase_if	201811L	<string> <deque> <forward_list> <list> <vector> <map> <set> <unordered_map> <unordered_set>
__cpp_lib_exchange_function	201304L	<utility>
__cpp_lib_execution	201902L	<execution>
__cpp_lib_filesystem	201703L	<filesystem>
__cpp_lib_format	201907L	<format>
__cpp_lib_gcd_lcm	201606L	<numeric>
__cpp_lib_generic_associative_lookup	201304L	<map> <set>
__cpp_lib_generic_unordered_lookup	201811L	<unordered_map> <unordered_set>
__cpp_lib_hardware_interference_size	201703L	<new>
__cpp_lib_has_unique_object_representations	201606L	<type_traits>
__cpp_lib_hypot	201603L	<cmath>
__cpp_lib_incomplete_container_elements	201505L	<forward_list> <list> <vector>
__cpp_lib_int_pow2	201806L	<bit>
__cpp_lib_integer_sequence	201304L	<utility>
__cpp_lib_integral_constant_callable	201304L	<type_traits>
__cpp_lib_interpolate	201902L	<cmath> <numeric>
__cpp_lib_invoke	201411L	<functional>
__cpp_lib_is_aggregate	201703L	<type_traits>
__cpp_lib_is_constant_evaluated	201811L	<type_traits>
__cpp_lib_is_final	201402L	<type_traits>
__cpp_lib_is_invocable	201703L	<type_traits>
__cpp_lib_is_layout_compatible	201907L	<type_traits>
__cpp_lib_is_null_pointer	201309L	<type_traits>
__cpp_lib_is_pointer_interconvertible	201907L	<type_traits>
__cpp_lib_is_swappable	201603L	<type_traits>
__cpp_lib_jthread	201911L	<stop_token> <thread>
__cpp_lib_latch	201907L	<latch>
__cpp_lib_launder	201606L	<new>
__cpp_lib_list_remove_return_type	201806L	<forward_list> <list>
__cpp_lib_logical_traits	201510L	<type_traits>
__cpp_lib_make_from_tuple	201606L	<tuple>
__cpp_lib_make_reverse_iterator	201402L	<iterator>
__cpp_lib_make_unique	201304L	<memory>
__cpp_lib_map_try_emplace	201411L	<map>
__cpp_lib_math_constants	201907L	<numbers>
__cpp_lib_math_special_functions	201603L	<cmath>
__cpp_lib_memory_resource	201603L	<memory_resource>
__cpp_lib_node_extract	201606L	<map> <set> <unordered_map> <unordered_set>
__cpp_lib_nonmember_container_access	201411L	<iterator> <array> <deque> <forward_list> <list> <map> <regex> <set> <string> <unordered_map> <unordered_set> <vector>
__cpp_lib_not_fn	201603L	<functional>
__cpp_lib_nothrow_convertible	201806L	<type_traits>
__cpp_lib_null_iterators	201304L	<iterator>
__cpp_lib_optional	201606L	<optional>
__cpp_lib_parallel_algorithm	201603L	<algorithm> <numeric>
__cpp_lib_polymorphic_allocator	201902L	<memory>
__cpp_lib_quoted_string_io	201304L	<iomanip>
__cpp_lib_ranges	201911L	<algorithm> <functional> <iterator> <memory> <ranges>
__cpp_lib_raw_memory_algorithms	201606L	<memory>
__cpp_lib_remove_cvref	201711L	<type_traits>
__cpp_lib_result_of_sfinae	201210L	<type_traits> <functional>
__cpp_lib_robust_nonmodifying_seq_ops	201304L	<algorithm>
__cpp_lib_sample	201603L	<algorithm>
__cpp_lib_scoped_lock	201703L	<mutex>
__cpp_lib_semaphore	201907L	<semaphore>
__cpp_lib_shared_mutex	201505L	<shared_mutex>
__cpp_lib_shared_ptr_arrays	201707L	<memory>
__cpp_lib_shared_ptr_weak_type	201606L	<memory>
__cpp_lib_shared_timed_mutex	201402L	<shared_mutex>
__cpp_lib_shift	201806L	<algorithm>
__cpp_lib_smart_ptr_for_overwrite	201811L	<memory>
__cpp_lib_source_location	201907L	<source_location>
__cpp_lib_span	201902L	<span>
__cpp_lib_ssize	201902L	<iterator>
__cpp_lib_starts_ends_with	201711L	<string> <string_view>
__cpp_lib_string_udls	201304L	<string>
__cpp_lib_string_view	201803L	<string> <string_view>
__cpp_lib_syncbuf	201803L	<syncstream>
__cpp_lib_three_way_comparison	201907L	<compare>
__cpp_lib_to_address	201711L	<memory>
__cpp_lib_to_array	201907L	<array>
__cpp_lib_to_chars	201611L	<charconv>
__cpp_lib_transformation_trait_aliases	201304L	<type_traits>
__cpp_lib_transparent_operators	201510L	<memory> <functional>
__cpp_lib_tuple_element_t	201402L	<tuple>
__cpp_lib_tuples_by_type	201304L	<tuple> <utility>
__cpp_lib_type_identity	201806L	<type_traits>
__cpp_lib_type_trait_variable_templates	201510L	<type_traits>
__cpp_lib_uncaught_exceptions	201411L	<exception>
__cpp_lib_unordered_map_try_emplace	201411L	<unordered_map>
__cpp_lib_unwrap_ref	201811L	<type_traits>
__cpp_lib_variant	201606L	<variant>
__cpp_lib_void_t	201411L	<type_traits>