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    std::lgamma

    De cppreference.com

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    <metanoindex/>

     
    C++
     
    Bibliothèque Numerics
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    La génération de nombres pseudo-aléatoires
    Moment de la compilation arithmétique rationnelle (C++11)
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    Generic numeric operations
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    iota (C++11)
    accumulate
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    Fonctions mathématiques courantes
    {{{1}}}
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    {{{2}}}
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    Fonctions
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    nanl    		 (C++11)
    (C++11)
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    Exponential functions
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    {{{1}}}
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    Erreur fonctions et gamma
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    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
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    Nearest integer floating point operations
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    ceil
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    llround    		 (C++11)
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    llrint    		 (C++11)
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    Flottant fonctions de manipulation de points
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    Floating point manipulation functions
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    ldexp
    scalbn
    scalbln    		 (C++11)
    (C++11)
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    logb (C++11)
    frexp
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    Classification / Comparaison
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    Macro constantes
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    FP_NORMAL
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    FP_INFINITE
    FP_NAN    		 (C++11)
    (C++11)
    (C++11)
    (C++11)
    (C++11)
     
    <tbody> </tbody>
    Déclaré dans l'en-tête <cmath>
    float lgamma( float arg );
    		 (depuis C++11)
    double lgamma( double arg );
    		 (depuis C++11)
    long double lgamma( long double arg );
    		 (depuis C++11)
    double lgamma( Integral arg );
    		 (depuis C++11)
    Calcule le logarithme naturel de la valeur absolue de la fonction gamma de arg .
    Original:
    Computes the natural logarithm of the absolute value of the fonction gamma of arg.
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    Paramètres

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

    La valeur du logarithme de la fonction de gamma d'arg, qui est log
    e    |∫∞
    0    targ-1
     e-t dt|     .
    Original:
    The value of the logarithm of the gamma function of arg, that is log
    e    |∫∞
    0    targ-1
     e-t dt|    .
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    Si arg est un nombre naturel, std::lgamma(arg) est le logarithme de la factorielle de arg-1 .
    Original:
    If arg is a natural number, std::lgamma(arg) is the logarithm of the factorial of arg-1.
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    Exceptions

    Si arg est zéro ou un entier négatif, une erreur peut se produire pôle et FE_INVALID ou FE_DIVBYZERO peut être soulevée .
    Original:
    If arg is zero or a negative integer, pole error may occur and FE_INVALID or FE_DIVBYZERO may be raised.
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    Si arg est trop grande, l'erreur peut se produire plage et FE_OVERFLOW peut être soulevée .
    Original:
    If arg is too large, range error may occur and FE_OVERFLOW may be raised.
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    Notes

    POSIX specification nécessite en outre que chaque exécution de lgamma stocke le signe de la fonction gamma d'arg dans la variable externe signgam .
    Original:
    POSIX specification additionally requires that each execution of lgamma stores the sign of the gamma function of arg in the external variable signgam.
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    Voir aussi

    (C++11)
    fonction gamma
    Original:
    gamma function
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    (fonction) [edit]
    C documentation for lgamma

    Liens externes

    Weisstein, Eric W. "Log Gamma Function." De MathWorld - Une ressource Web Wolfram .
    Original:
    Weisstein, Eric W. "Log Gamma Function." From MathWorld--A Wolfram Web Resource.
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