61 KiB
[version.syn]
17 Language support library [support]
17.3 Implementation properties [support.limits]
17.3.2 Header synopsis [version.syn]
The header supplies implementation-dependent information about the C++ standard library (e.g., version number and release date).
Each of the macros defined in is also defined after inclusion of any member of the set of library headers indicated in the corresponding comment in this synopsis.
[Note 1:
Future revisions of this document might replace the values of these macros with greater values.
â end note]
#define __cpp_lib_adaptor_iterator_pair_constructor 202106L // also in , #define __cpp_lib_addressof_constexpr 201603L // freestanding, also in #define __cpp_lib_algorithm_default_value_type 202403L// also in , , , , , <forward_list>, #define __cpp_lib_algorithm_iterator_requirements 202207L// also in , , #define __cpp_lib_aligned_accessor 202411L // also in #define __cpp_lib_allocate_at_least 202302L // also in #define __cpp_lib_allocator_traits_is_always_equal 201411L// freestanding, also in , <scoped_allocator>, , , <forward_list>, ,// , , , <unordered_map>, <unordered_set>#define __cpp_lib_any 201606L // also in #define __cpp_lib_apply 202506L // freestanding, also in , <type_traits>#define __cpp_lib_array_constexpr 201811L // also in , #define __cpp_lib_as_const 201510L // freestanding, also in #define __cpp_lib_associative_heterogeneous_erasure 202110L// also in , , <unordered_map>, <unordered_set>#define __cpp_lib_associative_heterogeneous_insertion 202306L// also in , , <unordered_map>, <unordered_set>#define __cpp_lib_assume_aligned 201811L // freestanding, also in #define __cpp_lib_atomic_flag_test 201907L // freestanding, also in #define __cpp_lib_atomic_float 201711L // freestanding, also in #define __cpp_lib_atomic_is_always_lock_free 201603L // freestanding, also in #define __cpp_lib_atomic_lock_free_type_aliases 201907L // also in #define __cpp_lib_atomic_min_max 202506L // freestanding, also in #define __cpp_lib_atomic_reductions 202506L // freestanding, also in #define __cpp_lib_atomic_ref 202411L // freestanding, also in #define __cpp_lib_atomic_shared_ptr 201711L // also in #define __cpp_lib_atomic_value_initialization 201911L // freestanding, also in , #define __cpp_lib_atomic_wait 201907L // freestanding, also in #define __cpp_lib_barrier 202302L // also in #define __cpp_lib_bind_back 202306L // freestanding, also in #define __cpp_lib_bind_front 202306L // freestanding, also in #define __cpp_lib_bit_cast 201806L // freestanding, also in #define __cpp_lib_bitops 201907L // freestanding, also in #define __cpp_lib_bitset 202306L // also in #define __cpp_lib_bool_constant 201505L // freestanding, also in <type_traits>#define __cpp_lib_bounded_array_traits 201902L // freestanding, also in <type_traits>#define __cpp_lib_boyer_moore_searcher 201603L // also in #define __cpp_lib_byte 201603L // freestanding, also in #define __cpp_lib_byteswap 202110L // freestanding, also in #define __cpp_lib_char8_t 201907L// freestanding, also in , , , , , , ,// <string_view>#define __cpp_lib_chrono 202306L // also in #define __cpp_lib_chrono_udls 201304L // also in #define __cpp_lib_clamp 201603L // also in #define __cpp_lib_common_reference 202302L // freestanding, also in <type_traits>#define __cpp_lib_common_reference_wrapper 202302L // freestanding, also in #define __cpp_lib_complex_udls 201309L // also in #define __cpp_lib_concepts 202207L// freestanding, also in , #define __cpp_lib_constant_wrapper 202506L // freestanding, also in <type_traits>#define __cpp_lib_constexpr_algorithms 202306L // also in , #define __cpp_lib_constexpr_atomic 202411L // also in #define __cpp_lib_constexpr_bitset 202207L // also in #define __cpp_lib_constexpr_charconv 202207L // freestanding, also in #define __cpp_lib_constexpr_cmath 202306L // also in , #define __cpp_lib_constexpr_complex 202306L // also in #define __cpp_lib_constexpr_deque 202502L // also in #define __cpp_lib_constexpr_dynamic_alloc 201907L // also in #define __cpp_lib_constexpr_exceptions 202502L// also in , , , , , and #define __cpp_lib_constexpr_flat_map 202502L // also in <flat_map>#define __cpp_lib_constexpr_flat_set 202502L // also in <flat_set>#define __cpp_lib_constexpr_forward_list 202502L // also in <forward_list>#define __cpp_lib_constexpr_functional 201907L // freestanding, also in #define __cpp_lib_constexpr_inplace_vector 202502L // also in <inplace_vector>#define __cpp_lib_constexpr_iterator 201811L // freestanding, also in #define __cpp_lib_constexpr_list 202502L // also in #define __cpp_lib_constexpr_map 202502L // also in #define __cpp_lib_constexpr_memory 202506L // freestanding, also in #define __cpp_lib_constexpr_new 202406L // freestanding, also in #define __cpp_lib_constexpr_numeric 201911L // also in #define __cpp_lib_constexpr_queue 202502L // also in #define __cpp_lib_constexpr_set 202502L // also in #define __cpp_lib_constexpr_stack 202502L // also in #define __cpp_lib_constexpr_string 201907L // also in #define __cpp_lib_constexpr_string_view 201811L // also in <string_view>#define __cpp_lib_constexpr_tuple 201811L // freestanding, also in #define __cpp_lib_constexpr_typeinfo 202106L // freestanding, also in #define __cpp_lib_constexpr_unordered_map 202502L // also in <unordered_map>#define __cpp_lib_constexpr_unordered_set 202502L // also in <unordered_set>#define __cpp_lib_constexpr_utility 201811L // freestanding, also in #define __cpp_lib_constexpr_vector 201907L // also in #define __cpp_lib_constrained_equality 202411L // freestanding,// also in , , , , #define __cpp_lib_containers_ranges 202202L// also in , , <forward_list>, , , <unordered_map>, <unordered_set>,// , , , #define __cpp_lib_contracts 202502L // freestanding, also in #define __cpp_lib_copyable_function 202306L // also in #define __cpp_lib_coroutine 201902L // freestanding, also in #define __cpp_lib_counting_scope 202506L // also in #define __cpp_lib_debugging 202403L // freestanding, also in #define __cpp_lib_define_static 202506L // freestanding, also in #define __cpp_lib_destroying_delete 201806L // freestanding, also in #define __cpp_lib_enable_shared_from_this 201603L // also in #define __cpp_lib_endian 201907L // freestanding, also in #define __cpp_lib_erase_if 202002L// also in , , <forward_list>, , , , , <unordered_map>,// <unordered_set>#define __cpp_lib_exception_ptr_cast 202506L // also in #define __cpp_lib_exchange_function 201304L // freestanding, also in #define __cpp_lib_execution 201902L // also in #define __cpp_lib_expected 202211L // also in #define __cpp_lib_filesystem 201703L // also in #define __cpp_lib_flat_map 202207L // also in <flat_map>#define __cpp_lib_flat_set 202207L // also in <flat_set>#define __cpp_lib_format 202311L // also in #define __cpp_lib_format_ranges 202207L // also in #define __cpp_lib_format_path 202506L // also in #define __cpp_lib_format_uchar 202311L // also in #define __cpp_lib_formatters 202302L // also in , #define __cpp_lib_forward_like 202207L // freestanding, also in #define __cpp_lib_freestanding_algorithm 202502L // freestanding, also in #define __cpp_lib_freestanding_array 202311L // freestanding, also in #define __cpp_lib_freestanding_char_traits 202306L // freestanding, also in #define __cpp_lib_freestanding_charconv 202306L // freestanding, also in #define __cpp_lib_freestanding_cstdlib 202306L // freestanding, also in , #define __cpp_lib_freestanding_cstring 202311L // freestanding, also in #define __cpp_lib_freestanding_cwchar 202306L // freestanding, also in #define __cpp_lib_freestanding_errc 202306L// freestanding, also in , <system_error>#define __cpp_lib_freestanding_execution 202502L // freestanding, also in #define __cpp_lib_freestanding_expected 202311L // freestanding, also in #define __cpp_lib_freestanding_feature_test_macros 202306L // freestanding#define __cpp_lib_freestanding_functional 202306L // freestanding, also in #define __cpp_lib_freestanding_iterator 202306L // freestanding, also in #define __cpp_lib_freestanding_mdspan 202311L // freestanding, also in #define __cpp_lib_freestanding_memory 202502L // freestanding, also in #define __cpp_lib_freestanding_numeric 202502L // freestanding, also in #define __cpp_lib_freestanding_operator_new see below // freestanding, also in #define __cpp_lib_freestanding_optional 202506L // freestanding, also in #define __cpp_lib_freestanding_random 202502L // freestanding, also in #define __cpp_lib_freestanding_ranges 202306L // freestanding, also in #define __cpp_lib_freestanding_ratio 202306L // freestanding, also in #define __cpp_lib_freestanding_string_view 202311L // freestanding, also in <string_view>#define __cpp_lib_freestanding_tuple 202306L // freestanding, also in #define __cpp_lib_freestanding_utility 202306L // freestanding, also in #define __cpp_lib_freestanding_variant 202311L // freestanding, also in #define __cpp_lib_fstream_native_handle 202306L // also in #define __cpp_lib_function_ref 202306L // also in #define __cpp_lib_gcd_lcm 201606L // also in #define __cpp_lib_generator 202207L // also in #define __cpp_lib_generic_associative_lookup 201304L // also in , #define __cpp_lib_generic_unordered_lookup 201811L// also in <unordered_map>, <unordered_set>#define __cpp_lib_hardware_interference_size 201703L // freestanding, also in #define __cpp_lib_has_unique_object_representations 201606L // freestanding, also in <type_traits>#define __cpp_lib_hazard_pointer 202306L // also in <hazard_pointer>#define __cpp_lib_hive 202502L // also in #define __cpp_lib_hypot 201603L // also in #define __cpp_lib_incomplete_container_elements 201505L// also in <forward_list>, , #define __cpp_lib_indirect 202502L // also in #define __cpp_lib_inplace_vector 202406L // also in <inplace_vector>#define __cpp_lib_int_pow2 202002L // freestanding, also in #define __cpp_lib_integer_comparison_functions 202002L // also in #define __cpp_lib_integer_sequence 201304L // freestanding, also in #define __cpp_lib_integral_constant_callable 201304L // freestanding, also in <type_traits>#define __cpp_lib_interpolate 201902L // also in , #define __cpp_lib_invoke 201411L // freestanding, also in #define __cpp_lib_invoke_r 202106L // freestanding, also in #define __cpp_lib_ios_noreplace 202207L // also in #define __cpp_lib_is_aggregate 201703L // freestanding, also in <type_traits>#define __cpp_lib_is_constant_evaluated 201811L // freestanding, also in <type_traits>#define __cpp_lib_is_final 201402L // freestanding, also in <type_traits>#define __cpp_lib_is_implicit_lifetime 202302L // freestanding, also in <type_traits>#define __cpp_lib_is_invocable 201703L // freestanding, also in <type_traits>#define __cpp_lib_is_layout_compatible 201907L // freestanding, also in <type_traits>#define __cpp_lib_is_nothrow_convertible 201806L // freestanding, also in <type_traits>#define __cpp_lib_is_null_pointer 201309L // freestanding, also in <type_traits>#define __cpp_lib_is_pointer_interconvertible 201907L // freestanding, also in <type_traits>#define __cpp_lib_is_scoped_enum 202011L // freestanding, also in <type_traits>#define __cpp_lib_is_sufficiently_aligned 202411L // also in #define __cpp_lib_is_swappable 201603L // freestanding, also in <type_traits>#define __cpp_lib_is_virtual_base_of 202406L // freestanding, also in <type_traits>#define __cpp_lib_is_within_lifetime 202306L // freestanding, also in <type_traits>#define __cpp_lib_jthread 201911L // also in <stop_token>, #define __cpp_lib_latch 201907L // also in #define __cpp_lib_launder 201606L // freestanding, also in #define __cpp_lib_linalg 202412L // also in #define __cpp_lib_list_remove_return_type 201806L // also in <forward_list>, #define __cpp_lib_logical_traits 201510L // freestanding, also in <type_traits>#define __cpp_lib_make_from_tuple 201606L // freestanding, also in #define __cpp_lib_make_reverse_iterator 201402L // freestanding, also in #define __cpp_lib_make_unique 201304L // also in #define __cpp_lib_map_try_emplace 201411L // also in #define __cpp_lib_math_constants 201907L // also in #define __cpp_lib_math_special_functions 201603L // also in #define __cpp_lib_mdspan 202406L // freestanding, also in #define __cpp_lib_memory_resource 201603L // also in <memory_resource>#define __cpp_lib_modules 202207L // freestanding#define __cpp_lib_move_iterator_concept 202207L // freestanding, also in #define __cpp_lib_move_only_function 202110L // also in #define __cpp_lib_node_extract 201606L// also in , , <unordered_map>, <unordered_set>#define __cpp_lib_nonmember_container_access 201411L// freestanding, also in , , <forward_list>, , , , , ,// , <unordered_map>, <unordered_set>, #define __cpp_lib_not_fn 202306L // freestanding, also in #define __cpp_lib_null_iterators 201304L // freestanding, also in #define __cpp_lib_observable_checkpoint 202506L // freestanding, also in #define __cpp_lib_optional 202506L // also in #define __cpp_lib_optional_range_support 202406L // freestanding, also in #define __cpp_lib_out_ptr 202311L // freestanding, also in #define __cpp_lib_parallel_algorithm 202506L// also in , , #define __cpp_lib_parallel_scheduler 202506L // also in #define __cpp_lib_philox_engine 202406L // also in #define __cpp_lib_polymorphic 202502L // also in #define __cpp_lib_polymorphic_allocator 201902L // also in <memory_resource>#define __cpp_lib_print 202406L // also in , #define __cpp_lib_quoted_string_io 201304L // also in #define __cpp_lib_ranges 202406L// also in , , , , #define __cpp_lib_ranges_as_const 202311L // freestanding, also in #define __cpp_lib_ranges_as_rvalue 202207L // freestanding, also in #define __cpp_lib_ranges_cache_latest 202411L // freestanding, also in #define __cpp_lib_ranges_cartesian_product 202207L // freestanding, also in #define __cpp_lib_ranges_chunk 202202L // freestanding, also in #define __cpp_lib_ranges_chunk_by 202202L // freestanding, also in #define __cpp_lib_ranges_concat 202403L // freestanding, also in #define __cpp_lib_ranges_contains 202207L // also in #define __cpp_lib_ranges_enumerate 202302L // also in #define __cpp_lib_ranges_find_last 202207L // also in #define __cpp_lib_ranges_fold 202207L // also in #define __cpp_lib_ranges_generate_random 202403L // also in #define __cpp_lib_ranges_indices 202506L // also in #define __cpp_lib_ranges_iota 202202L // also in #define __cpp_lib_ranges_join_with 202202L // freestanding, also in #define __cpp_lib_ranges_repeat 202207L // freestanding, also in #define __cpp_lib_ranges_reserve_hint 202502L // also in #define __cpp_lib_ranges_slide 202202L // freestanding, also in #define __cpp_lib_ranges_starts_ends_with 202106L // also in #define __cpp_lib_ranges_stride 202207L // freestanding, also in #define __cpp_lib_ranges_to_container 202202L // freestanding, also in #define __cpp_lib_ranges_to_input 202502L // freestanding, also in #define __cpp_lib_ranges_zip 202110L// freestanding, also in , , #define __cpp_lib_ratio 202306L // freestanding, also in #define __cpp_lib_raw_memory_algorithms 202411L // also in #define __cpp_lib_rcu 202306L // also in #define __cpp_lib_reference_from_temporary 202202L // freestanding, also in <type_traits>#define __cpp_lib_reference_wrapper 202403L // freestanding, also in #define __cpp_lib_reflection 202506L // also in #define __cpp_lib_remove_cvref 201711L // freestanding, also in <type_traits>#define __cpp_lib_result_of_sfinae 201210L// freestanding, also in , <type_traits>#define __cpp_lib_robust_nonmodifying_seq_ops 201304L // also in #define __cpp_lib_sample 201603L // also in #define __cpp_lib_saturation_arithmetic 202311L // also in #define __cpp_lib_scoped_lock 201703L // also in #define __cpp_lib_semaphore 201907L // also in #define __cpp_lib_senders 202506L // also in #define __cpp_lib_shared_mutex 201505L // also in <shared_mutex>#define __cpp_lib_shared_ptr_arrays 201707L // also in #define __cpp_lib_shared_ptr_weak_type 201606L // also in #define __cpp_lib_shared_timed_mutex 201402L // also in <shared_mutex>#define __cpp_lib_shift 202202L // also in #define __cpp_lib_simd 202506L // also in #define __cpp_lib_simd_complex 202502L // also in #define __cpp_lib_simd_permutations 202506L // also in #define __cpp_lib_smart_ptr_for_overwrite 202002L // also in #define __cpp_lib_smart_ptr_owner_equality 202306L // also in #define __cpp_lib_source_location 201907L // freestanding, also in <source_location>#define __cpp_lib_span 202311L // freestanding, also in #define __cpp_lib_span_initializer_list 202311L // freestanding, also in #define __cpp_lib_spanstream 202106L // also in #define __cpp_lib_ssize 201902L // freestanding, also in #define __cpp_lib_sstream_from_string_view 202306L // also in #define __cpp_lib_stacktrace 202011L // also in #define __cpp_lib_start_lifetime_as 202207L // freestanding, also in #define __cpp_lib_starts_ends_with 201711L // also in , <string_view>#define __cpp_lib_stdatomic_h 202011L // also in <stdatomic.h>#define __cpp_lib_string_contains 202011L // also in , <string_view>#define __cpp_lib_string_resize_and_overwrite 202110L // also in #define __cpp_lib_string_subview 202506L // also in , <string_view>#define __cpp_lib_string_udls 201304L // also in #define __cpp_lib_string_view 202403L // also in , <string_view>#define __cpp_lib_submdspan 202411L // freestanding, also in #define __cpp_lib_syncbuf 201803L // also in #define __cpp_lib_task 202506L // also in #define __cpp_lib_text_encoding 202306L // also in <text_encoding>#define __cpp_lib_three_way_comparison 201907L // freestanding, also in #define __cpp_lib_to_address 201711L // freestanding, also in #define __cpp_lib_to_array 201907L // freestanding, also in #define __cpp_lib_to_chars 202306L // also in #define __cpp_lib_to_string 202306L // also in #define __cpp_lib_to_underlying 202102L // freestanding, also in #define __cpp_lib_transformation_trait_aliases 201304L // freestanding, also in <type_traits>#define __cpp_lib_transparent_operators 201510L// freestanding, also in , #define __cpp_lib_trivially_relocatable 202502L// freestanding, also in , <type_traits>#define __cpp_lib_tuple_element_t 201402L // freestanding, also in #define __cpp_lib_tuple_like 202311L// also in , , , <unordered_map>#define __cpp_lib_tuples_by_type 201304L // freestanding, also in , #define __cpp_lib_type_identity 201806L // freestanding, also in <type_traits>#define __cpp_lib_type_order 202506L // also in #define __cpp_lib_type_trait_variable_templates 201510L // freestanding, also in <type_traits>#define __cpp_lib_uncaught_exceptions 201411L // freestanding, also in #define __cpp_lib_unordered_map_try_emplace 201411L // also in <unordered_map>#define __cpp_lib_unreachable 202202L // freestanding, also in #define __cpp_lib_unwrap_ref 201811L // freestanding, also in <type_traits>#define __cpp_lib_variant 202306L // also in #define __cpp_lib_void_t 201411L // freestanding, also in <type_traits>
Additionally, each of the following macros is defined in a hardened implementation:#define __cpp_lib_hardened_array 202502L // also in #define __cpp_lib_hardened_basic_stacktrace 202506L // also in #define __cpp_lib_hardened_basic_string 202502L // also in #define __cpp_lib_hardened_basic_string_view 202502L // also in <string_view>#define __cpp_lib_hardened_bitset 202502L // also in #define __cpp_lib_hardened_common_iterator 202506L // also in #define __cpp_lib_hardened_counted_iterator 202506L // also in #define __cpp_lib_hardened_deque 202502L // also in #define __cpp_lib_hardened_expected 202502L // also in #define __cpp_lib_hardened_forward_list 202502L // also in <forward_list>#define __cpp_lib_hardened_inplace_vector 202502L // also in <inplace_vector>#define __cpp_lib_hardened_list 202502L // also in #define __cpp_lib_hardened_mdspan 202502L // also in #define __cpp_lib_hardened_optional 202502L // also in #define __cpp_lib_hardened_shared_ptr_array 202506L // also in #define __cpp_lib_hardened_span 202502L // also in #define __cpp_lib_hardened_valarray 202502L // also in #define __cpp_lib_hardened_vector 202502L // also in #define __cpp_lib_hardened_view_interface 202506L // also in
The macro __cpp_lib_freestanding_operator_new is defined to the integer literal 202306L if all the default versions of the replaceable global allocation functions meet the requirements of a hosted implementation, and to the integer literal 0 otherwise ([new.delete]).
Recommended practice: Freestanding implementations should only define a macro from if the implementation provides the corresponding facility in its entirety.
Recommended practice: A non-hardened implementation should not define macros from required for hardened implementations.