close
Namensräume
Varianten

    std::nan, std::nanf, std::nanl

    Aus cppreference.com
    Image

    This page has been machine-translated from the English version of the wiki using Google Translate.

    The translation may contain errors and awkward wording. Hover over text to see the original version. You can help to fix errors and improve the translation. For instructions click here.

    Click here for the English version of this page

    <metanoindex/>

     
    C++
     
    Numerik-Bibliothek
    Gemeinsame mathematischen Funktionen
    Floating-Point-Umgebung
    Komplexe Zahlen
    Numerische Arrays
    Pseudo-Zufallszahlen
    Compile-time rationale Arithmetik (C++11)
    Generische numerische Operationen
    Original:
    Generic numeric operations
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    iota(C++11)
    accumulate
    inner_product
    adjacent_difference
    partial_sum
     
    Gemeinsame mathematischen Funktionen
    Funktionen
    Original:
    Functions
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    Grundlegende Bedienung
    Original:
    Basic operations
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    remainder(C++11)
    remquo(C++11)
    fma(C++11)
    fmax(C++11)
    fmin(C++11)
    fdim(C++11)
    nan
    nanf
    nanl    		(C++11)
    (C++11)
    (C++11)
    Exponentialfunktionen
    Original:
    Exponential functions
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    exp
    exp2(C++11)
    expm1(C++11)
    log
    log10
    log1p(C++11)
    log2(C++11)
    Power-Funktionen
    Original:
    Power functions
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    sqrt
    cbrt(C++11)
    hypot(C++11)
    pow
    Trigonometrische und hyperbolische Funktionen
    Original:
    Trigonometric and hyperbolic functions
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    sinh
    cosh
    tanh
    asinh(C++11)
    acosh(C++11)
    atanh(C++11)
    Fehler-und Gamma-Funktionen
    Original:
    Error and gamma functions
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    erf(C++11)
    erfc(C++11)
    lgamma(C++11)
    tgamma(C++11)
    Nächste ganze Zahl Fließkomma-Operationen
    Original:
    Nearest integer floating point operations
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    ceil
    floor
    round
    lround
    llround    		(C++11)
    (C++11)
    (C++11)
    trunc(C++11)
    nearbyint(C++11)
    rint
    lrint
    llrint    		(C++11)
    (C++11)
    (C++11)
    Floating-Point-Manipulation Funktionen
    Original:
    Floating point manipulation functions
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    ldexp
    scalbn
    scalbln    		(C++11)
    (C++11)
    ilogb(C++11)
    logb(C++11)
    frexp
    modf
    nextafter
    nexttoward    		(C++11)
    (C++11)
    copysign(C++11)
    Klassifizierung / Vergleich
    Original:
    Classification/Comparison
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    fpclassify(C++11)
    isfinite(C++11)
    isinf(C++11)
    isnan(C++11)
    isnormal(C++11)
    signbit(C++11)
    isgreater(C++11)
    isgreaterequal(C++11)
    isless(C++11)
    islessequal(C++11)
    islessgreater(C++11)
    isunordered(C++11)
    Makro Konstanten
    Original:
    Macro constants
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    FP_NORMAL
    FP_SUBNORMAL
    FP_ZERO
    FP_INFINITE
    FP_NAN    		(C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
     
    <tbody> </tbody>
    definiert in Header <cmath>
    float nanf( const char* arg );
    		 (seit C++11)
    double nan( const char* arg );
    		 (seit C++11)
    long double nanl( const char* arg );
    		 (seit C++11)
    Konvertiert die Implementierung definiert Zeichenkette arg in die entsprechende ruhigen NaN Wert. Der Anruf std::nan("string") entspricht dem Anruf std::strtod("NAN(string)", (char**)NULL); .
    Original:
    Converts the implementation-defined character string arg into the corresponding quiet NaN value. The call std::nan("string") is equivalent to the call std::strtod("NAN(string)", (char**)NULL);.
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    Parameter

    arg -
    schmale Zeichenfolge, die den Inhalt einer NaN oder einer leeren Zeichenfolge
    Original:
    narrow character string identifying the contents of a NaN, or an empty string
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    Rückgabewert

    Der Wert NaN, die zur Identifizierung von String arg oder Null entspricht, wenn die Umsetzung nicht unterstützt ruhigen NaNs .
    Original:
    The NaN value that corresponds to the identifying string arg or zero if the implementation does not support quiet NaNs.
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    Siehe auch

    (C++11)
    prüft, ob die angegebene Zahl ist NaN
    Original:
    checks if the given number is NaN
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    (Funktion) [edit]
    [statisch]
    gibt einen ruhigen NaN Wert der gegebenen Fließkomma-Typ
    Original:
    returns a quiet NaN 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 of std::numeric_limits) [edit]