std::numeric_limits::min
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| static T min() |
(bis C + +11) | |
| static constexpr T min() |
(seit C++11) | |
Gibt den minimalen endlichen Wert darstellbar durch die numerischen Typ
T. Für Fließkomma-Typen mit Denormalisierung gibt die minimale positive normalisierte Wert. Nur sinnvoll für beschränkte Typen und für unbeschränkte unsigned Typen, das heißt, Typen, die eine unendliche Menge von negativen Werte stellen keine sinnvolle Mindest .Original:
Returns the minimum finite value representable by the numeric type
T. For floating point types with denormalization returns the minimum positive normalized value. Only meaningful for bounded types and for unbounded unsigned types, that is, types that represent an infinite set of negative values have no meaningful minimum.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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Inhaltsverzeichnis |
[Bearbeiten] Rückgabewert
T
|
std::numeric_limits<T>::min() |
| /* non-specialized */ | T();
|
| bool | false |
| char | CHAR_MIN |
| signed char | SCHAR_MIN |
| unsigned char | 0 |
| wchar_t | WCHAR_MIN |
| char16_t | 0 |
| char32_t | 0 |
| short | SHRT_MIN |
| unsigned short | 0 |
| int | INT_MIN |
| unsigned int | 0 |
| long | LONG_MIN |
| unsigned long | 0 |
| long long | LLONG_MIN |
| unsigned long long | 0 |
| float | FLT_MIN |
| double | DBL_MIN |
| long double | LDBL_MIN |
[Bearbeiten] Ausnahmen
[Bearbeiten] Beispiel
Veranschaulicht die Verwendung mit typedef-Typen und den Unterschied in der Vorzeichen des Ergebnisses zwischen Integer-und Floating-Point-Typen
Original:
Demonstrates the use with typedef types, and the difference in the sign of the result between integer and 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.
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#include <limits> #include <cstddef> #include <iostream> int main() { std::cout << "short: " << std::dec << std::numeric_limits<short>::min() << " or " << std::hex << std::showbase << std::numeric_limits<short>::min() << '\n' << "int: " << std::dec << std::numeric_limits<int>::min() << std::showbase << " or " << std::hex << std::numeric_limits<int>::min() << '\n' << std::dec << "ptrdiff_t: " << std::numeric_limits<std::ptrdiff_t>::min() << std::showbase << " or " << std::hex << std::numeric_limits<std::ptrdiff_t>::min() << '\n' << "float: " << std::numeric_limits<float>::min() << " or " << std::hexfloat << std::numeric_limits<float>::min() << '\n' << "double: " << std::defaultfloat << std::numeric_limits<double>::min() << " or " << std::hexfloat << std::numeric_limits<double>::min() << '\n'; }
Output:
short: -32768 or 0x8000 int: -2147483648 or 0x80000000 ptrdiff_t: -9223372036854775808 or 0x8000000000000000 float: 1.17549e-38 or 0x1p-126 double: 2.22507e-308 or 0x1p-1022
[Bearbeiten] Siehe auch
| [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) |
| [statisch] |
gibt die kleinste positive subnormal Wert der gegebenen Fließkomma-Typ Original: returns the smallest positive subnormal value of the given 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 Elementfunktion) |
| [statisch] |
liefert den größten endlichen Wert des angegebenen Typs Original: returns the largest 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) |
