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    std::scalbn, std::scalbln

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    < cpp‎ | numeric‎ | math

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    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
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    iota(C++11)
    accumulate
    inner_product
    adjacent_difference
    partial_sum
     
    Gemeinsame mathematischen Funktionen
    Funktionen
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    Functions
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    Grundlegende Bedienung
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    Basic operations
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    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
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    Exponential functions
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    exp
    exp2(C++11)
    expm1(C++11)
    log
    log10
    log1p(C++11)
    log2(C++11)
    Power-Funktionen
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    Power functions
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    sqrt
    cbrt(C++11)
    hypot(C++11)
    pow
    Trigonometrische und hyperbolische Funktionen
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    Trigonometric and hyperbolic functions
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    sinh
    cosh
    tanh
    asinh(C++11)
    acosh(C++11)
    atanh(C++11)
    Fehler-und Gamma-Funktionen
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    Error and gamma functions
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    erf(C++11)
    erfc(C++11)
    lgamma(C++11)
    tgamma(C++11)
    Nächste ganze Zahl Fließkomma-Operationen
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    Nearest integer floating point operations
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    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
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    Floating point manipulation functions
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    ldexp
    scalbn
    scalbln    		(C++11)
    (C++11)
    ilogb(C++11)
    logb(C++11)
    Klassifizierung / Vergleich
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    Classification/Comparison
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    fpclassify(C++11)
    isfinite(C++11)
    isinf(C++11)
    isnan(C++11)
    isnormal(C++11)
    signbit(C++11)
    Makro Konstanten
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    Macro constants
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    FP_NORMAL
    FP_SUBNORMAL
    FP_ZERO
    FP_INFINITE
    FP_NAN    		(C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
     
    definiert in Header <cmath>
    float       scalbn(float x, int exp );
    		(seit C++11)
    double      scalbn(double x, int exp );
    		(seit C++11)
    longdouble scalbn(longdouble x, int exp );
    		(seit C++11)
    double      scalbn( Integral x, int exp );
    		(seit C++11)
    float       scalbln(float x, long exp );
    		(seit C++11)
    double      scalbln(double x, long exp );
    		(seit C++11)
    longdouble scalbln(longdouble x, long exp );
    		(seit C++11)
    double      scalbln( Integral x, long exp );
    		(seit C++11)
    Multipliziert einen Gleitkommawert x durch FLT_RADIX erhöht die Macht exp. Auf binäres System ist äquivalent zu ldexp()
    Original:
    Multiplies an floating point value x by FLT_RADIX raised to power exp. On binary system it is equivalent to ldexp()
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    [Bearbeiten]Parameter

    arg -
    Floating-Point-Wert
    Original:
    floating point value
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    exp -
    Integerwert
    Original:
    integer value
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    [Bearbeiten]Rückgabewert

    Renditen x×FLT_RADIXexp
    Original:
    returns x×FLT_RADIXexp
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    Wenn das Ergebnis zu groß für den zugrunde liegenden Typ, tritt Bereich Fehler-und HUGE_VAL zurückgegeben .
    Original:
    If the result is too large for the underlying type, range error occurs and HUGE_VAL is returned.
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    [Bearbeiten]Siehe auch

    zersetzt eine Zahl in Mantisse und einer Leistung von 2
    Original:
    decomposes a number into significand and a power of 2
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    (Funktion)[edit]
    multipliziert eine Zahl durch 2 potenziert
    Original:
    multiplies a number by 2 raised to a power
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    (Funktion)[edit]
    Von „https://de.cppreference.com/mwiki/index.php?title=cpp/numeric/math/scalbn&oldid=29770“
    close