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    std::numeric_limits::infinity

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    static T infinity()
    		(bis C + +11)
    staticconstexpr T infinity()
    		(seit C++11)
    Gibt den besonderen Wert "positive Unendlichkeit", wie von der Fließkomma-Typ T vertreten. Nur sinnvoll, wenn std::numeric_limits<T>::has_infinity==true. In IEEE 754, die häufigste Binärdarstellung von Floating-Point-Zahlen, ist die positive Unendlichkeit der Wert mit allen Bits des Exponenten Set und alle Bits der Fraktion gelöscht .
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    Returns the special value "positive infinity", as represented by the floating-point type T. Only meaningful if std::numeric_limits<T>::has_infinity==true. In IEEE 754, the most common binary representation of floating-point numbers, the positive infinity is the value with all bits of the exponent set and all bits of the fraction cleared.
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    Inhaltsverzeichnis

    [Bearbeiten]Rückgabewert

    Tstd::numeric_limits<T>::infinity()
    /* non-specialized */ T();
    boolfalse
    char​0​
    signedchar​0​
    unsignedchar​0​
    wchar_t​0​
    char16_t​0​
    char32_t​0​
    short​0​
    unsignedshort​0​
    int​0​
    unsignedint​0​
    long​0​
    unsignedlong​0​
    longlong​0​
    unsignedlonglong​0​
    floatHUGE_VALF
    doubleHUGE_VAL
    longdoubleHUGE_VALL

    [Bearbeiten]Ausnahmen

    noexcept specification:  
    noexcept
      (seit C++11)

    [Bearbeiten]Beispiel

    #include <iostream>#include <limits>int main(){double max =std::numeric_limits<double>::max();double inf =std::numeric_limits<double>::infinity();   if(inf > max)std::cout<< inf <<" is greater than "<< max <<'\n';}

    Output: 

    inf is greater than 1.79769e+308


    [Bearbeiten]Siehe auch

    [statisch]
    identifiziert Floating-Point-Typen, die den besonderen Wert "positive Unendlichkeit" darstellen kann
    Original:
    identifies floating-point types that can represent the special value "positive infinity"
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    (public static Mitglied konstanten)[edit]
    Von „https://de.cppreference.com/mwiki/index.php?title=cpp/types/numeric_limits/infinity&oldid=30293“
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