std::meta::is_arithmetic_type

 

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Checking string literals is_string_literal Types info meta::exception access_context data_member_options member_offset operators Concepts reflection_range Promoting to static storage reflect_constant_string reflect_constant_array define_static_string define_static_array define_static_object Operator representations operator_of symbol_of u8symbol_of Names and locations has_identifier identifier_of u8identifier_of display_string_of u8display_string_of source_location_of Reflection queries ➜ Member accessibility queries is_accessible has_inaccessible_nonstatic_   data_members has_inaccessible_bases has_inaccessible_subobjects

Scope identification current_function current_class current_namespace Reflection member queries members_of bases_of static_data_members_of nonstatic_data_members_of      subobjects_of enumerators_of Reflection layout queries offset_of size_of alignment_of bit_size_of Annotation reflection annotations_of annotations_of_with_type Value extraction extract Reflection substitution can_substitute substitute Expression result reflection reflect_constant reflect_object reflect_function Class definition generation data_member_spec is_data_member_spec define_aggregate

Primary type categories is_void_type is_null_pointer_type is_integral_type is_floating_point_type is_array_type is_pointer_type is_lvalue_reference_type is_rvalue_reference_type is_member_object_pointer_type is_member_function_pointer_type      is_enum_type is_union_type is_class_type is_function_type is_reflection_type Composite type categories is_reference_type is_arithmetic_type is_fundamental_type is_object_type is_scalar_type is_compound_type is_member_pointer_type Type properties ➜ Type relations is_same_type is_base_of_type is_virtual_base_of_type is_convertible_type is_nothrow_convertible_type is_layout_compatible_type is_pointer_interconvertible_   base_of_type is_invocable_type is_invocable_r_type is_nothrow_invocable_type is_nothrow_invocable_r_type

Const-volatile modifications remove_const remove_volatile remove_cv add_const add_volatile add_cv Reference modifications remove_reference add_lvalue_reference add_rvalue_reference Sign modifications make_signed make_unsigned Array modifications remove_extent remove_all_extents Pointer modifications remove_pointer add_pointer Other transformations remove_cvref decay common_type common_reference underlying_type invoke_result unwrap_reference unwrap_ref_decay tuple_size tuple_element is_applicable_type is_nothrow_applicable_type apply_result variant_size variant_alternative type_order

 

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Reflection queries type_of object_of constant_of is_public is_protected is_private is_virtual is_pure_virtual is_override is_final is_deleted is_defaulted is_user_provided is_user_declared is_explicit is_noexcept is_bit_field is_enumerator is_annotation is_const is_volatile is_mutable_member is_lvalue_reference_qualified is_rvalue_reference_qualified has_static_storage_duration has_thread_storage_duration has_automatic_storage_duration      has_internal_linkage has_module_linkage has_external_linkage has_linkage has_c_language_linkage is_complete_type is_enumerable_type is_variable is_type is_namespace is_type_alias is_namespace_alias is_function is_conversion_function is_operator_function is_literal_operator is_special_member_function is_destructor

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Defined in header <meta>
consteval bool is_arithmetic_type( std::meta::info r );		(since C++26)

Returns true if r represents an arithmetic type (that is, an integral type or a floating-point type) or a cv-qualified version thereof. Otherwise returns false.

Parameters

r

-

a reflection value

Return value

true if r represents an arithmetic type; otherwise false.

Exceptions

Throws std::meta::exception if r does not represent a type or type alias.

Example

Run this code

#include <atomic>
#include <cstddef>
#include <meta>

class A {};

enum class B : int { e };

static_assert
(""
    and is_arithmetic_type(^^bool)
    and is_arithmetic_type(^^char)
    and is_arithmetic_type(^^char const)
    and is_arithmetic_type(^^int)
    and is_arithmetic_type(^^int const)
    and is_arithmetic_type(^^float)
    and is_arithmetic_type(^^float const)

    and not is_arithmetic_type(^^char&)
    and not is_arithmetic_type(^^char*)
    and not is_arithmetic_type(^^int&)
    and not is_arithmetic_type(^^int*)
    and not is_arithmetic_type(^^float&)
    and not is_arithmetic_type(^^float*)
    and not is_arithmetic_type(^^A)
    and not is_arithmetic_type(^^B)
    and not is_arithmetic_type(^^decltype(B::e))
    and not is_arithmetic_type(^^std::byte)
    and not is_arithmetic_type(^^std::atomic_int)
);

int main() {}

See also

is_integral_type (C++26)	checks if reflected type is an integral type (function)
is_floating_point_type (C++26)	checks if reflected type is a floating-point type (function)
is_arithmetic (C++11)	checks if a type is an arithmetic type (class template)