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      std::numeric_limits::traps

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      staticconstbool traps
      		(até C++11)
      staticconstexprbool traps
      		(desde C++11)
      O valor de std::numeric_limits<T>::traps é true para todos os tipos aritméticos T que têm pelo menos um valor que, se for utilizado como um argumento para uma operação aritmética, irá gerar uma armadilha.
      Original:
      The value of std::numeric_limits<T>::traps is true for all arithmetic types T that have at least one value that, if used as an argument to an arithmetic operation, will generate a armadilha.
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      [editar]Especializações padrão

      T
      valor de std::numeric_limits<T>::traps
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      value of std::numeric_limits<T>::traps
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      /* non-specialized */ false
      boolfalse
      char
      geralmente true
      Original:
      usually true
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      signedchar
      geralmente true
      Original:
      usually true
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      unsignedchar
      geralmente true
      Original:
      usually true
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      wchar_t
      geralmente true
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      usually true
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      char16_t
      geralmente true
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      usually true
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      char32_t
      geralmente true
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      usually true
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      short
      geralmente true
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      usually true
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      unsignedshort
      geralmente true
      Original:
      usually true
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      int
      geralmente true
      Original:
      usually true
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      unsignedint
      geralmente true
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      usually true
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      long
      geralmente true
      Original:
      usually true
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      unsignedlong
      geralmente true
      Original:
      usually true
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      longlong
      geralmente true
      Original:
      usually true
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      unsignedlonglong
      geralmente true
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      usually true
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      float
      geralmente false
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      usually false
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      double
      geralmente false
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      usually false
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      longdouble
      geralmente false
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      usually false
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      [editar]Notas

      Na maioria das plataformas divisão por zero sempre armadilhas, e std::numeric_limits<T>::traps é true para todos os tipos inteiros que suportam o valor 0. A exceção é o bool tipo: embora a divisão por armadilhas false devido a promoção integral da bool para int, são as armadilhas zero-valorizado que int. Zero não é um valor de bool tipo.
      Original:
      On most platforms integer division by zero always traps, and std::numeric_limits<T>::traps is true for all integer types that support the value 0. The exception is the type bool: even though division by false traps due to integral promotion from bool to int, it is the zero-valued int that traps. Zero is not a value of type bool.
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      Na maioria das plataformas, exceções de ponto flutuante pode ser ligado e desligado em tempo de execução (por exemplo feenableexcept() no Linux ou _controlfp no Windows), caso em que o valor de std::numeric_limits<T>::traps para tipos de ponto flutuante reflete o estado de ponto flutuante de instalação em armadilhas o tempo de inicialização do programa, que é false na maioria dos sistemas modernos. Uma excepção seria um DEC Alpha programa, onde é true se compilado sem -ieee.
      Original:
      On most platforms, floating-point exceptions may be turned on and off at run time (e.g. feenableexcept() on Linux or _controlfp on Windows), in which case the value of std::numeric_limits<T>::traps for floating-point types reflects the state of floating-point trapping facility at the time of program startup, which is false on most modern systems. An exception would be a DEC Alpha program, where it is true if compiled without -ieee.
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      [editar]Veja também

      De ponto flutuante ambiente
      [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]
      [estática]
      		 identifies the floating-point types that detect loss of precision as denormalization loss rather than inexact result
      (membro estático público constante)[edit]
      Obtida de "https://pt.cppreference.com/mwiki/index.php?title=cpp/types/numeric_limits/traps&oldid=24626"
      close