std::numeric_limits - cppreference.com
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      std::numeric_limits

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      Relational operators
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      rel_ops::operator!=
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      Pairs and tuples
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      Troque, avançar e avançar
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      Swap, forward and move
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      Apoio a tipos
      Tipos básicos
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      Basic types
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      Tipos fundamentais
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      Limites numéricos
      Original:
      Numeric limits
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      C numérico limita interface
      Informações de tipo de tempo de execução
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      Runtime type information
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      Características de tipo
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      Type traits
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      Principais categorias de tipo
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      Primary type categories
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      Propriedades de tipo
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      Type properties
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      Operações apoiadas
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      Supported operations
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      (C++11)(C++11)(C++11)
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      Relacionamentos e consultas de propriedade
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      Relationships and property queries
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      Tipo modificações
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      Type modifications
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      Transformações tipo
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      Type transformations
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      Digite constantes traço
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      Type trait constants
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      (C++11)
       
      std::numeric_limits
      Constantes estáticas
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      Static constants
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      numeric_limits::is_specialized
      numeric_limits::is_signed
      numeric_limits::is_integer
      numeric_limits::is_exact
      numeric_limits::has_infinity
      numeric_limits::has_quiet_NaN
      numeric_limits::has_signaling_NaN
      numeric_limits::has_denorm
      numeric_limits::has_denorm_loss
      numeric_limits::round_style
      numeric_limits::is_iec559
      numeric_limits::is_bounded
      numeric_limits::is_modulo
      numeric_limits::digits
      numeric_limits::digits10
      numeric_limits::max_digits10(C++11)
      numeric_limits::radix
      numeric_limits::min_exponent
      numeric_limits::min_exponent10
      numeric_limits::max_exponent
      numeric_limits::max_exponent10
      numeric_limits::traps
      numeric_limits::tinyness_before
      Funções de membro estático
      Original:
      Static member functions
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      numeric_limits::min
      numeric_limits::lowest(C++11)
      numeric_limits::max
      numeric_limits::epsilon
      numeric_limits::round_error
      numeric_limits::infinity
      numeric_limits::quiet_NaN
      numeric_limits::signaling_NaN
      numeric_limits::denorm_min
      Tipos de auxiliar
      Original:
      Helper types
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      <tbody> </tbody>
      Definido no cabeçalho <limits>
      template< class T > class numeric_limits;
      O modelo de classe numeric_limits fornece uma maneira padronizada para consultar várias propriedades de tipos fundamentais (por exemplo, o maior valor possível para o tipo int é std::numeric_limits<int>::max()).
      Original:
      The numeric_limits class template provides a standardized way to query various properties of fundamental types (e.g. the largest possible value for type int is std::numeric_limits<int>::max()).
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      Esta informação é fornecida através de especializações do molde numeric_limits. A biblioteca padrão faz especializações disponíveis para todos os tipos fundamentais:
      Original:
      This information is provided via specializations of the numeric_limits template. The standard library makes available specializations for all fundamental types:
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      <tbody> </tbody>
      Definido no cabeçalho <limits>
      template<> class numeric_limits<bool>; template<> class numeric_limits<char>; template<> class numeric_limits<signed char>; template<> class numeric_limits<unsigned char>; template<> class numeric_limits<wchar_t>; template<> class numeric_limits<char16_t>; // C++11 feature template<> class numeric_limits<char32_t>; // C++11 feature template<> class numeric_limits<short>; template<> class numeric_limits<unsigned short>; template<> class numeric_limits<int>; template<> class numeric_limits<unsigned int>; template<> class numeric_limits<long>; template<> class numeric_limits<unsigned long>; template<> class numeric_limits<long long>; template<> class numeric_limits<unsigned long long>; template<> class numeric_limits<float>; template<> class numeric_limits<double>; template<> class numeric_limits<long double>;
      Além disso, existe uma especialização para cada versão cv qualificado de cada tipo fundamental, idêntica à especialização sem ressalvas, por exemplo, std::numeric_limits<const int>, std::numeric_limits<volatile int> e std::numeric_limits<const volatile int> são fornecidos e são equivalentes ao std::numeric_limits<int>.
      Original:
      Additionally, a specialization exists for every cv-qualified version of each fundamental type, identical to the unqualified specialization, e.g. std::numeric_limits<const int>, std::numeric_limits<volatile int>, and std::numeric_limits<const volatile int> are provided and are equivalent to std::numeric_limits<int>.
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      O padrão de tipos de bibliotecas que são aliases de tipos fundamentais (como std::size_t ou std::streamsize também pode ser examinado com as características de tipo std::numeric_limits.
      Original:
      The standard library types that are aliases of fundamental types (such as std::size_t or std::streamsize may also be examined with the std::numeric_limits type traits.
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      Implementações podem fornecer especializações de std::numeric_limits para implementação tipos específicos: por exemplo. GCC. Fornece std::numeric_limits<__int128> bibliotecas podem adicionar especializações para biblioteca fornecidos tipos, por exemplo, dispõe OpenEXR std::numeric_limits<half> para um 16-bit tipo de ponto flutuante.
      Original:
      Implementations may provide specializations of std::numeric_limits for implementation-specific types: e.g. GCC provides std::numeric_limits<__int128>. Libraries may add specializations for library-provided types, e.g. OpenEXR provides std::numeric_limits<half> for a 16-bit floating-point type.
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      Constantes de membros

      [estática]
      identifica os tipos para que std::numeric_limits se especializou
      Original:
      identifies types for which std::numeric_limits is specialized
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      (membro estático público constante) [edit]
      [estática]
      identifica os tipos assinados
      Original:
      identifies signed types
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      (membro estático público constante) [edit]
      [estática]
      identifica os tipos inteiros
      Original:
      identifies integer types
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      (membro estático público constante) [edit]
      [estática]
      identifica os tipos de exatas
      Original:
      identifies exact types
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      (membro estático público constante) [edit]
      [estática]
      identifica tipos de ponto flutuante que pode representar o valor especial "infinito positivo"
      Original:
      identifies floating-point types that can represent the special value "positive infinity"
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      (membro estático público constante) [edit]
      [estática]
      identifica tipos de ponto flutuante que podem representar o valor especial "tranquila, não-número um" (NaN)
      Original:
      identifies floating-point types that can represent the special value "quiet not-a-number" (NaN)
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      (membro estático público constante) [edit]
      [estática]
      identifica tipos de ponto flutuante que podem representar o valor especial "de sinalização não-número um" (NaN)
      Original:
      identifies floating-point types that can represent the special value "signaling not-a-number" (NaN)
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      (membro estático público constante) [edit]
      [estática]
      identifica o estilo desnormalização usado pelo tipo de ponto flutuante
      Original:
      identifies the denormalization style used by the floating-point type
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      (membro estático público constante) [edit]
      [estática]
      		 identifies the floating-point types that detect loss of precision as denormalization loss rather than inexact result
      (membro estático público constante) [edit]
      [estática]
      identifica o estilo arredondamento usado pelo tipo
      Original:
      identifies the rounding style used by the type
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      (membro estático público constante) [edit]
      [estática]
      identifica os IEC 559/IEEE 754 tipos de ponto flutuante
      Original:
      identifies the IEC 559/IEEE 754 floating-point types
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      (membro estático público constante) [edit]
      [estática]
      		 identifies types that represent a finite set of values
      (membro estático público constante) [edit]
      [estática]
      identifica os tipos que lidam com transborda com a aritmética módulo
      Original:
      identifies types that handle overflows with modulo arithmetic
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      (membro estático público constante) [edit]
      [estática]
      número de dígitos radix que podem ser representadas sem alterações
      Original:
      number of radix digits that can be represented without change
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      (membro estático público constante) [edit]
      [estática]
      número de dígitos decimais que podem ser representadas sem alterações
      Original:
      number of decimal digits that can be represented without change
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      (membro estático público constante) [edit]
      [estática] (C++11)
      número de dígitos decimais necessários para diferenciar os valores deste tipo
      Original:
      number of decimal digits necessary to differentiate all values of this type
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      (membro estático público constante) [edit]
      [estática]
      a raiz ou base inteiro usado pela representação do tipo de dado
      Original:
      the radix or integer base used by the representation of the given type
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      (membro estático público constante) [edit]
      [estática]
      mais um do que o menor poder negativo do radix que é um valor válido de ponto flutuante normalizado
      Original:
      one more than the smallest negative power of the radix that is a valid normalized floating-point value
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      (membro estático público constante) [edit]
      [estática]
      a menor potência negativa de 10 que é um valor válido de ponto flutuante normalizado
      Original:
      the smallest negative power of ten that is a valid normalized floating-point value
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      (membro estático público constante) [edit]
      [estática]
      um a mais que o maior poder inteiro da raiz que é um valor válido de ponto flutuante finita
      Original:
      one more than the largest integer power of the radix that is a valid finite floating-point value
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      (membro estático público constante) [edit]
      [estática]
      a maior potência inteira de 10 que é um válido valor de ponto flutuante finita
      Original:
      the largest integer power of 10 that is a valid finite floating-point value
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      (membro estático público constante) [edit]
      [estática]
      identifica os tipos que podem causar operações aritméticas para prender
      Original:
      identifies types which can cause arithmetic operations to trap
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      (membro estático público constante) [edit]
      [estática]
      identifica tipos de ponto flutuante que detectam tinyness antes de arredondamentos
      Original:
      identifies floating-point types that detect tinyness before rounding
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      (membro estático público constante) [edit]

      Funções de membro

      [estática]
      retorna o menor valor finito do tipo de dado
      Original:
      returns the smallest finite value of the given type
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      (função public static membro) [edit]
      [estática] (C++11)
      retorna o menor valor finito do tipo de dado
      Original:
      returns the lowest finite value of the given type
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      (função public static membro) [edit]
      [estática]
      retorna o maior valor finito do tipo de dado
      Original:
      returns the largest finite value of the given type
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      (função public static membro) [edit]
      [estática]
      retorna a diferença entre 1.0 eo próximo valor representável do dado tipo de ponto flutuante
      Original:
      returns the difference between 1.0 and the next representable value of the given floating-point type
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      (função public static membro) [edit]
      [estática]
      retorna o erro de arredondamento máximo do dado tipo de ponto flutuante
      Original:
      returns the maximum rounding error of the given floating-point type
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      (função public static membro) [edit]
      [estática]
      retorna o valor infinito positivo do dado tipo de ponto flutuante
      Original:
      returns the positive infinity value of the given floating-point type
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      (função public static membro) [edit]
      [estática]
      retorna um valor NaN tranquila do determinado tipo de ponto flutuante
      Original:
      returns a quiet NaN value of the given floating-point type
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      (função public static membro) [edit]
      [estática]
      retorna um valor NaN sinalização do dado tipo de ponto flutuante
      Original:
      returns a signaling NaN value of the given floating-point type
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      (função public static membro) [edit]
      [estática]
      retorna o menor valor positivo subnormal do dado tipo de ponto flutuante
      Original:
      returns the smallest positive subnormal value of the given floating-point type
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      (função public static membro) [edit]

      Classes auxiliares
      indica os modos de ponto flutuante de arredondamento
      Original:
      indicates floating-point rounding modes
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      (enum) [edit]
      indica os modos de ponto flutuante desnormalização
      Original:
      indicates floating-point denormalization modes
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      (enum) [edit]

      Relacionamento com constantes C biblioteca de macro

      Exemplo

      #include <limits>
#include <iostream>

int main() 
{
    std::cout << "type\tlowest\thighest\n";
    std::cout << "int\t"
              << std::numeric_limits<int>::lowest() << '\t'
              << std::numeric_limits<int>::max() << '\n';
    std::cout << "float\t"
              << std::numeric_limits<float>::lowest() << '\t'
              << std::numeric_limits<float>::max() << '\n';
    std::cout << "double\t"
              << std::numeric_limits<double>::lowest() << '\t'
              << std::numeric_limits<double>::max() << '\n';
}

      Potencial saída: 

      type    lowest         highest
int     -2147483648    2147483647
float   -3.40282e+38   3.40282e+38
double  -1.79769e+308  1.79769e+308