Feature Test Macro Support

Overview

This file documents the feature test macros currently supported by libc++.

Status

Current Status :name: feature-status-table :widths: auto
Macro Name Value
C++ 14
__cpp_lib_chrono_udls 201304L
__cpp_lib_complex_udls 201309L
__cpp_lib_exchange_function 201304L
__cpp_lib_generic_associative_lookup 201304L
__cpp_lib_integer_sequence 201304L
__cpp_lib_integral_constant_callable 201304L
__cpp_lib_is_final 201402L
__cpp_lib_is_null_pointer 201309L
__cpp_lib_make_reverse_iterator 201402L
__cpp_lib_make_unique 201304L
__cpp_lib_null_iterators 201304L
__cpp_lib_quoted_string_io 201304L
__cpp_lib_result_of_sfinae 201210L
__cpp_lib_robust_nonmodifying_seq_ops 201304L
__cpp_lib_shared_timed_mutex 201402L
__cpp_lib_string_udls 201304L
__cpp_lib_transformation_trait_aliases 201304L
__cpp_lib_transparent_operators 201210L
__cpp_lib_tuple_element_t 201402L
__cpp_lib_tuples_by_type 201304L
C++ 17
__cpp_lib_addressof_constexpr 201603L
__cpp_lib_allocator_traits_is_always_equal 201411L
__cpp_lib_any 201606L
__cpp_lib_apply 201603L
__cpp_lib_array_constexpr 201603L
__cpp_lib_as_const 201510L
__cpp_lib_atomic_is_always_lock_free 201603L
__cpp_lib_bool_constant 201505L
__cpp_lib_boyer_moore_searcher unimplemented
__cpp_lib_byte 201603L
__cpp_lib_chrono 201611L
__cpp_lib_clamp 201603L
__cpp_lib_enable_shared_from_this 201603L
__cpp_lib_execution unimplemented
__cpp_lib_filesystem 201703L
__cpp_lib_gcd_lcm 201606L
__cpp_lib_hardware_interference_size 201703L
__cpp_lib_has_unique_object_representations 201606L
__cpp_lib_hypot 201603L
__cpp_lib_incomplete_container_elements 201505L
__cpp_lib_invoke 201411L
__cpp_lib_is_aggregate 201703L
__cpp_lib_is_invocable 201703L
__cpp_lib_is_swappable 201603L
__cpp_lib_launder 201606L
__cpp_lib_logical_traits 201510L
__cpp_lib_make_from_tuple 201606L
__cpp_lib_map_try_emplace 201411L
__cpp_lib_math_special_functions unimplemented
__cpp_lib_memory_resource unimplemented
__cpp_lib_node_extract 201606L
__cpp_lib_nonmember_container_access 201411L
__cpp_lib_not_fn 201603L
__cpp_lib_optional 201606L
__cpp_lib_parallel_algorithm unimplemented
__cpp_lib_raw_memory_algorithms 201606L
__cpp_lib_sample 201603L
__cpp_lib_scoped_lock 201703L
__cpp_lib_shared_mutex 201505L
__cpp_lib_shared_ptr_arrays unimplemented
__cpp_lib_shared_ptr_weak_type 201606L
__cpp_lib_string_view 201606L
__cpp_lib_to_chars unimplemented
__cpp_lib_transparent_operators 201510L
__cpp_lib_type_trait_variable_templates 201510L
__cpp_lib_uncaught_exceptions 201411L
__cpp_lib_unordered_map_try_emplace 201411L
__cpp_lib_variant 201606L
__cpp_lib_void_t 201411L
C++ 2a
__cpp_lib_atomic_ref unimplemented
__cpp_lib_bind_front unimplemented
__cpp_lib_bit_cast unimplemented
__cpp_lib_char8_t 201811L
__cpp_lib_concepts unimplemented
__cpp_lib_constexpr_misc unimplemented
__cpp_lib_constexpr_swap_algorithms unimplemented
__cpp_lib_destroying_delete unimplemented
__cpp_lib_erase_if 201811L
__cpp_lib_generic_unordered_lookup unimplemented
__cpp_lib_interpolate 201902L
__cpp_lib_is_constant_evaluated 201811L
__cpp_lib_list_remove_return_type unimplemented
__cpp_lib_ranges unimplemented
__cpp_lib_three_way_comparison unimplemented