Namespaces
Variants

    std::is_arithmetic

    From cppreference.com
     
    C++
     
    Metaprogramming library
    Type traits
    Type categories
    (C++11)
    (C++11)(DR*)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11) 
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)  
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    Type properties
    (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++14)
    (C++11)
    (C++17)
    (C++23)
    (C++11)(deprecated in C++26)
    (C++11)
    (C++11)
    (C++11)(until C++20*)
    (C++11)(deprecated in C++20)
    (C++11)
    (C++11)
    (C++20)
    (C++20)
    (C++23)
    (C++17)
    Type trait constants
    (C++11)(C++17)(C++11)(C++11)
    Metafunctions
    (C++17)
    (C++17)
    (C++17)
    Supported operations
    Relationships and property queries
    Type modifications
    (C++11)(C++11)(C++11)
    (C++11)(C++11)(C++11)
    (C++11)
    (C++11)
    Type transformations
    (C++11)(deprecated in C++23)
    (C++11)(deprecated in C++23)
    (C++11)
    (C++20)
    (C++11)(until C++20*)(C++17)

    (C++11)
    (C++11)
    (C++20)
    (C++11)
    (C++20)
    (C++11)
    (C++17)
    Compile-time rational arithmetic
    Compile-time integer sequences
    (C++14)
     
    Defined in header <type_traits>
    template< class T > struct is_arithmetic;
    		 (since C++11)
    See More

    std::is_arithmetic is a UnaryTypeTrait.

    If T is an arithmetic type (that is, an integral type or a floating-point type) or a cv-qualified version thereof, provides the member constant value equal to true. For any other type, value is false.

    If the program adds specializations for std::is_arithmetic or std::is_arithmetic_v(since C++17), the behavior is undefined.

    Template parameters

    T - a type to check

    Helper variable template

    template< class T > constexpr bool is_arithmetic_v = is_arithmetic<T>::value;
    		 (since C++17)
    [edit]

    Inherited from std::integral_constant

    Member constants

    value
    [static]
    		 true if T is an arithmetic type, false otherwise
    (public static member constant)

    Member functions

    operator bool
    		 converts the object to bool, returns value
    (public member function)
    operator()
    (C++14)
    		 returns value
    (public member function)

    Member types

    Type Definition
    value_type bool
    type std::integral_constant<bool, value>

    Notes

    Arithmetic types are the built-in types for which the arithmetic operators (+, -, *, /) are defined (possibly in combination with the usual arithmetic conversions).

    Specializations of std::numeric_limits are provided for all arithmetic types.

    Possible implementation

    template<class T>
struct is_arithmetic : std::integral_constant<bool,
                                              std::is_integral<T>::value ||
                                              std::is_floating_point<T>::value> {};

    Example

    Run this code
    #include <atomic>
#include <cstddef>
#include <type_traits>

class A {};

enum class B : int { e };

static_assert(
    std::is_arithmetic_v<bool>            == true  and
    std::is_arithmetic_v<char>            == true  and
    std::is_arithmetic_v<char const>      == true  and
    std::is_arithmetic_v<int>             == true  and
    std::is_arithmetic_v<int const>       == true  and
    std::is_arithmetic_v<float>           == true  and
    std::is_arithmetic_v<float const>     == true  and
    std::is_arithmetic_v<std::size_t>     == true  and

    std::is_arithmetic_v<char&>           == false and
    std::is_arithmetic_v<char*>           == false and
    std::is_arithmetic_v<int&>            == false and
    std::is_arithmetic_v<int*>            == false and
    std::is_arithmetic_v<float&>          == false and
    std::is_arithmetic_v<float*>          == false and
    std::is_arithmetic_v<A>               == false and
    std::is_arithmetic_v<B>               == false and
    std::is_arithmetic_v<decltype(B::e)>  == false and
    std::is_arithmetic_v<std::byte>       == false and
    std::is_arithmetic_v<std::atomic_int> == false
);

int main() {}

    See also

    (C++11)
    		 checks if a type is an integral type
    (class template) [edit]
    (C++11)
    		 checks if a type is a floating-point type
    (class template) [edit]