std::numeric_limits::denorm_min
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<metanoindex/>
<tbody> </tbody> static T denorm_min() |
(bis C + +11) | |
static constexpr T denorm_min() |
(seit C++11) | |
Gibt die minimale positive subnormal Wert des Typs
T, wenn std::numeric_limits<T>::has_denorm != std::denorm_absent, ansonsten std::numeric_limits<T>::min(). Nur sinnvoll für Fließkomma-Typen .Original:
Returns the minimum positive subnormal Wert 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.
Rückgabewert
T
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std::numeric_limits<T>::denorm_min()
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| /* non-specialized */ | T();
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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
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char16_t
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0
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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
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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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/ * Implementierung definiert * /
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. |
Ausnahmen
Beispiel
Demonstates die darunterliegende Bitstruktur des 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());
}
Siehe auch
[statisch] |
gibt den kleinsten endlichen Wert des angegebenen Typs 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. (public static Elementfunktion) |
[statisch] |
identifiziert die Denormalisierung Stil durch den Floating-Point-Typ verwendet 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. (public static Mitglied konstanten) |
[statisch] (C++11) |
Gibt den niedrigsten endlichen Wert des angegebenen Typs 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. (public static Elementfunktion) |