std::numeric_limits::denorm_min
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<metanoindex/>
<tbody> </tbody> static T denorm_min() |
(até C++11) | |
static constexpr T denorm_min() |
(desde C++11) | |
Retorna o valor subnormal positiva mínima do
T tipo, se std::numeric_limits<T>::has_denorm != std::denorm_absent, caso contrário retorna std::numeric_limits<T>::min(). Só faz sentido para tipos de ponto flutuante.Original:
Returns the minimum positive valor subnormal of the type
T, if std::numeric_limits<T>::has_denorm != std::denorm_absent, otherwise returns std::numeric_limits<T>::min(). Only meaningful for floating-point types.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Valor de retorno
T
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std::numeric_limits<T>::denorm_min()
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| /* non-specialized */ | T();
|
bool
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false
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char
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0
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signed char
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0
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unsigned char
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0
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wchar_t
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0
|
char16_t
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0
|
char32_t
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0
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short
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0
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unsigned short
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0
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int
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0
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unsigned int
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0
|
long
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0
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unsigned long
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0
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long long
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0
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unsigned long long
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0
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float
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2-149 if std::numeric_limits<float>::is_iec559 == true
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double
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2-1074 if std::numeric_limits<double>::is_iec559 == true
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long double
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/ * Implementação definida * /
Original: /* implementation-defined */ The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Exceções
Exemplo
Demonstates a estrutura subjacente do bit denorm_min ()
Original:
Demonstates the underlying bit structure of the denorm_min()
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
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#include <cstdint>
#include <limits>
#include <cassert>
int main()
{
// the smallest subnormal value has sign bit = 0, exponent = 0
// and only the least significant bit of the fraction is 1
uint32_t denorm_bits = 0x0001;
float denorm_float = reinterpret_cast<float&>(denorm_bits);
assert(denorm_float == std::numeric_limits<float>::denorm_min());
}
Veja também
[estática] |
retorna o menor valor finito do tipo de dado Original: returns the smallest finite value of the given type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função public static membro) |
[estática] |
identifica o estilo desnormalização usado pelo tipo de ponto flutuante Original: identifies the denormalization style used by the floating-point type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (membro estático público constante) |
[estática] (C++11) |
retorna o menor valor finito do tipo de dado Original: returns the lowest finite value of the given type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função public static membro) |