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Showing content from https://cplusplus.com/is_arithmetic below:

class template

<type_traits>

std::is_arithmetic

template <class T> struct is_arithmetic;

Is arithmetic type

Trait class that identifies whether T is an arithmetic type (either an integral or a floating point type).

It inherits from integral_constant as being either true_type or false_type, depending on whether T is an arithmetic type:

fundamental arithmetic types integral types bool char char16_t char32_t wchar_t signed char short int int long int long long int unsigned char unsigned short int unsigned int unsigned long int unsigned long long int floating point types float double long double

All fundamental arithmetic types, along with all their aliases (like those in cstdint), are considered arithmetic types by this class, including their const and volatile qualified variants.

Enums are not considered arithmetic types in C++ (see is_enum).

This is a compound type trait defined with the same behavior as:

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

Template parameters

T: A type.

Member types Inherited from integral_constant:

Member constants Inherited from integral_constant:
member constant definition value either true or false
Member functions Inherited from integral_constant:

operator bool: Returns value (public member function)

Example

// is_arithmetic example
#include <iostream>
#include <type_traits>
#include <complex>

int main() {
  std::cout << std::boolalpha;
  std::cout << "is_arithmetic:" << std::endl;
  std::cout << "char: " << std::is_arithmetic<char>::value << std::endl;
  std::cout << "float: " << std::is_arithmetic<float>::value << std::endl;
  std::cout << "float*: " << std::is_arithmetic<float*>::value << std::endl;
  std::cout << "complex<double>: " << std::is_arithmetic<std::complex<double>>::value << std::endl;
  return 0;
}

Output:

is_arithmetic:
char: true
float: true
float*: false
complex<double>: false