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lgamma

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Fonctions mathématiques courantes
Fonctions
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Functions
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Opérations de base
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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)
Les fonctions exponentielles
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Exponential functions
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exp
exp2 (C99)
expm1 (C99)
log
log10
log1p (C99)
log2 (C99)
Les fonctions de puissance
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Power functions
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sqrt
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Les fonctions trigonométriques et hyperboliques
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Trigonometric and hyperbolic functions
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sinh
cosh
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asinh (C99)
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Erreur fonctions et gamma
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Error and gamma functions
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erf (C99)
erfc (C99)
lgamma (C99)
tgamma (C99)
Entier le plus proche opérations en virgule flottante
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Nearest integer floating point operations
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ceil
floor
round
lround
llround
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trunc (C99)
nearbyint (C99)
rint
lrint
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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
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(C99)
ilogb (C99)
logb (C99)
Classification
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Classification
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fpclassify (C99)
isfinite (C99)
isinf (C99)
isnan (C99)
isnormal (C99)
signbit (C99)
Macro constantes
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Macro constants
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FP_NORMAL
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Defined in header <math.h>
float       lgammaf( float arg );
double      lgamma( double arg );
long double lgammal( long double arg );
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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Sommaire

[modifier] Paramètres

arg -
valeur du point flottant
Original:
floating point value
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[modifier] 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, lgamma(arg) est le logarithme de la factorielle de arg-1 .
Original:
If arg is a natural number, lgamma(arg) is the logarithm of the factorial of arg-1.
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[modifier] 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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[modifier] 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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[modifier] Voir aussi

(C99)
fonction gamma
Original:
gamma function
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(fonction) [edit]

[modifier] 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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