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    log1p

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    <metanoindex/>

     
    C
     
    Numerics
     
    Gemeinsame mathematischen Funktionen
    Funktionen
    Original:
    Functions
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    Grundlegende Bedienung
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    Basic operations
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    remainder(C99)
    remquo(C99)
    fma(C99)
    fmax(C99)
    fmin(C99)
    fdim(C99)
    nan
    nanf
    nanl    		(C99)
    (C99)
    (C99)
    Exponentialfunktionen
    Original:
    Exponential functions
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    exp
    exp2(C99)
    expm1(C99)
    log
    log10
    log1p(C99)
    log2(C99)
    Power-Funktionen
    Original:
    Power functions
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    sqrt
    cbrt(C99)
    hypot(C99)
    pow
    Trigonometrische und hyperbolische Funktionen
    Original:
    Trigonometric and hyperbolic functions
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    sinh
    cosh
    tanh
    asinh(C99)
    acosh(C99)
    atanh(C99)
    Fehler-und Gamma-Funktionen
    Original:
    Error and gamma functions
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    erf(C99)
    erfc(C99)
    lgamma(C99)
    tgamma(C99)
    Nächste ganze Zahl Fließkomma-Operationen
    Original:
    Nearest integer floating point operations
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    ceil
    floor
    round
    lround
    llround    		(C99)
    (C99)
    (C99)
    trunc(C99)
    nearbyint(C99)
    rint
    lrint
    llrint    		(C99)
    (C99)
    (C99)
    Floating-Point-Manipulation Funktionen
    Original:
    Floating point manipulation functions
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    ldexp
    scalbn
    scalbln    		(C99)
    (C99)
    ilogb(C99)
    logb(C99)
    Klassifizierung
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    Classification
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    fpclassify(C99)
    isfinite(C99)
    isinf(C99)
    isnan(C99)
    isnormal(C99)
    signbit(C99)
    Makro Konstanten
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    Macro constants
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    <tbody> </tbody>
    definiert in Header <math.h>
    float log1pf( float arg );
    double log1p( double arg );
    long double log1pl( long double arg );
    Berechnet den natürlichen (Basis e) Logarithmus 1+arg. Diese Funktion ist genauer als der Ausdruck log(1+arg) wenn arg nahe Null ist .
    Original:
    Computes the natural (base e) logarithm of 1+arg. This function is more precise than the expression log(1+arg) if arg is close to zero.
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    Parameter

    arg -
    Floating-Point-Wert
    Original:
    floating point value
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    Rückgabewert

    ln(1+arg)

    Domain-Fehler tritt auf, wenn arg negativ ist. NAN wird in diesem Fall wieder .
    Original:
    Domain error occurs if arg is negative. NAN is returned in that case.
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    Bereichs-Fehler tritt auf, wenn arg ist 0. -HUGE_VAL wird in diesem Fall wieder .
    Original:
    Range error occurs if arg is 0. -HUGE_VAL is returned in that case.
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    Siehe auch
    berechnet natürlichen (base e) Logarithmus (zur Basis e) (ln(x))
    Original:
    computes natural (base e) logarithm (to base e) (ln(x))
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    (Funktion) [edit]
    berechnet gemeinsamen (base 10) Logarithmus (log10(x))
    Original:
    computes common (base 10) logarithm (log10(x))
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    (Funktion) [edit]
    C++ documentation for log1p