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std::numeric_limits::has_signaling_NaN

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std::numeric_limits
 
static const bool has_signaling_NaN
(até C + 11)
static constexpr bool has_signaling_NaN
(a partir do C++ 11)
O valor de std::numeric_limits<T>::has_signaling_NaN é true para todos os tipos T capazes de representar o valor "Signaling Não-A-Número". Esta constante é significativo para todos os tipos de ponto flutuante e é garantido para ser true se std::numeric_limits<T>::is_iec559 == true.
Original:
The value of std::numeric_limits<T>::has_signaling_NaN is true for all types T capable of representing the special value "Signaling Não-A-Número". This constant is meaningful for all floating-point types and is guaranteed to be true if std::numeric_limits<T>::is_iec559 == true.
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[editar] Especializações padrão

T
valor de std::numeric_limits<T>::has_signaling_NaN
Original:
value of std::numeric_limits<T>::has_signaling_NaN
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/* non-specialized */ false
bool false
char false
signed char false
unsigned char false
wchar_t false
char16_t false
char32_t false
short false
unsigned short false
int false
unsigned int false
long false
unsigned long false
long long false
unsigned long long false
float
geralmente true
Original:
usually true
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double
geralmente true
Original:
usually true
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long double
geralmente true
Original:
usually true
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[editar] Veja também

[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]
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]