Espaces de noms
Variantes

    std::scalbn, std::scalbln

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    <metanoindex/>

     
    C++
     
    Bibliothèque Numerics
    Fonctions mathématiques courantes
    Virgule flottante environnement
    Nombres complexes
    Tableaux numériques
    La génération de nombres pseudo-aléatoires
    Moment de la compilation arithmétique rationnelle (C++11)
    Génériques des opérations numériques
    Original:
    Generic numeric operations
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    iota (C++11)
    accumulate
    inner_product
    adjacent_difference
    partial_sum
     
    Fonctions mathématiques courantes
    {{{1}}}
    Original:
    {{{2}}}
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    Fonctions
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    Functions
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    Opérations de base
    Original:
    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)
    Les fonctions exponentielles
    Original:
    Exponential functions
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    exp
    exp2 (C++11)
    expm1 (C++11)
    log
    log10
    log1p (C++11)
    log2 (C++11)
    Les fonctions de puissance
    Original:
    Power functions
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    sqrt
    cbrt (C++11)
    hypot (C++11)
    pow
    Les fonctions trigonométriques et hyperboliques
    Original:
    Trigonometric and hyperbolic functions
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    sinh
    cosh
    tanh
    asinh (C++11)
    acosh (C++11)
    atanh (C++11)
    {{{1}}}
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    {{{2}}}
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    Erreur fonctions et gamma
    Original:
    Error and gamma functions
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    erf (C++11)
    erfc (C++11)
    lgamma (C++11)
    tgamma (C++11)
    Entier le plus proche opérations en virgule flottante
    Original:
    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)
    Flottant fonctions de manipulation de points
    Original:
    Floating point manipulation functions
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    ldexp
    scalbn
    scalbln    		 (C++11)
    (C++11)
    ilogb (C++11)
    logb (C++11)
    frexp
    modf
    nextafter
    nexttoward    		 (C++11)
    (C++11)
    copysign (C++11)
    Classification / Comparaison
    Original:
    Classification/Comparison
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    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)
    Macro constantes
    Original:
    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)
     
    <tbody> </tbody>
    Déclaré dans l'en-tête <cmath>
    float scalbn( float x, int exp );
    		 (depuis C++11)
    double scalbn( double x, int exp );
    		 (depuis C++11)
    long double scalbn( long double x, int exp );
    		 (depuis C++11)
    double scalbn( Integral x, int exp );
    		 (depuis C++11)
    float scalbln( float x, long exp );
    		 (depuis C++11)
    double scalbln( double x, long exp );
    		 (depuis C++11)
    long double scalbln( long double x, long exp );
    		 (depuis C++11)
    double scalbln( Integral x, long exp );
    		 (depuis C++11)
    Multiplie une valeur à virgule flottante x par FLT_RADIX porté à exp pouvoir. Le système binaire est équivalent à 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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    Paramètres

    arg -
    valeur du point flottant
    Original:
    floating point value
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    exp -
    valeur entière
    Original:
    integer value
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    Retourne la valeur

    x×FLT_RADIXexp rendements
    Original:
    returns x×FLT_RADIXexp
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    Si le résultat est trop grand pour le type sous-jacent, une erreur d'intervalle se produit et HUGE_VAL est retourné .
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    If the result is too large for the underlying type, range error occurs and HUGE_VAL is returned.
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    Voir aussi
    se décompose en un certain nombre mantisse et d'une puissance de 2
    Original:
    decomposes a number into significand and a power of 2
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    (fonction) [edit]
    multiplie par un nombre 2 élevé à une puissance
    Original:
    multiplies a number by 2 raised to a power
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    (fonction) [edit]
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