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      std::is_arithmetic

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      is_arithmetic
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      Definido no cabeçalho <type_traits>
      template<class T >
      struct is_arithmetic;
      		(desde C++11)

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

      Índice

      Herdado de std::integral_constant

      Member constants

      value
      [estática]
      true se T is an arithmetic type , false contrário
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      true if T is an arithmetic type , false otherwise
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      (membro estático público constante)

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      operator bool
      converte o objeto em bool, retorna value
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      converts the object to bool, returns value
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      (função pública membro)

      Member types

      Tipo
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      Type
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      		 Definition
      value_typebool
      typestd::integral_constant<bool, value>

      [editar]Notas

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

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

      [editar]Possível implementação

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

      [editar]Exemplo

      #include <iostream>#include <type_traits>   class A {};   int main(){std::cout<<std::boolalpha;std::cout<< std::is_arithmetic<A>::value<<'\n';std::cout<< std::is_arithmetic<int>::value<<'\n';std::cout<< std::is_arithmetic<int&>::value<<'\n';std::cout<< std::is_arithmetic<int*>::value<<'\n';std::cout<< std::is_arithmetic<float>::value<<'\n';std::cout<< std::is_arithmetic<float&>::value<<'\n';std::cout<< std::is_arithmetic<float*>::value<<'\n';}

      Saída: 

      false true false false true false false

      [editar]Veja também

      (C++11)
      verifica se um tipo é tipo integral
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      checks if a type is integral type
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      (modelo de classe)[edit]
      (C++11)
      verifica se um tipo é tipo de ponto flutuante
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      checks if a type is floating-point type
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      (modelo de classe)[edit]
      Obtida de "https://pt.cppreference.com/mwiki/index.php?title=cpp/types/is_arithmetic&oldid=24546"
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