std::is_arithmetic

Since C++11

Header: <type_traits>

std::is_arithmetic is a UnaryTypeTrait.

# Declarations

template< class T >
struct is_arithmetic;

(since C++11)

# 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.

# Example

#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