std::pow

< cpp‎ | numeric‎ | math

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
 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
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Basic operations
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 abs(int)labsllabsimaxabs (C++11)
 abs(float)fabs
 divldivlldivimaxdiv (C++11)
 fmod
 remainder (C++11)
 remquo (C++11)
 fma (C++11)
 fmax (C++11)
 fmin (C++11)
 fdim (C++11)
 nannanfnanl (C++11) (C++11) (C++11)
Les fonctions exponentielles
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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)
Les fonctions de puissance
Original:
Power functions
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 sqrt
 cbrt (C++11)
 hypot (C++11)
 pow
Les fonctions trigonométriques et hyperboliques
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Trigonometric and hyperbolic functions
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 sin
 cos
 tan
 asin
 acos
 atan
 atan2
 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
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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
 floor
 roundlroundllround (C++11) (C++11) (C++11)
 trunc (C++11)
 nearbyint (C++11)
 rintlrintllrint (C++11) (C++11) (C++11)
Flottant fonctions de manipulation de points
Original:
Floating point manipulation functions
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 ldexp
 scalbnscalbln (C++11) (C++11)
 ilogb (C++11)
 logb (C++11)
 frexp
 modf
 nextafternexttoward (C++11) (C++11)
 copysign (C++11)
Classification / Comparaison
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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)
 isgreater (C++11)
 isgreaterequal (C++11)
 isless (C++11)
 islessequal (C++11)
 islessgreater (C++11)
 isunordered (C++11)
Macro constantes
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Macro constants
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 HUGE_VALFHUGE_VALHUGE_VALL (C++11) (C++11)
 INFINITY (C++11)
 nan (C++11)
 math_errhandlingMATH_ERRNOMATH_ERREXCEPT (C++11)
 FP_NORMALFP_SUBNORMALFP_ZEROFP_INFINITEFP_NAN (C++11) (C++11) (C++11) (C++11) (C++11)
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 Defined in header float       pow( float base, float exp ); (1) double      pow( double base, double exp ); (2) long double pow( long double base, long double exp ); (3) Promoted    pow( Arithmetic base, Arithmetic exp ); (4) (depuis C++11) float       pow( float base, int iexp ); (5) (avant C++11) double      pow( double base, int iexp ); (6) (avant C++11) long double pow( long double base, int iexp ); (7) (avant C++11)
Calcule la valeur de `base` élevé à la puissance `exp` ou `iexp` .
Original:
Computes the value of `base` raised to the power `exp` or `iexp`.
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4)
Un ensemble de surcharges ou d'un modèle de fonction de toutes les combinaisons des arguments de type arithmétique ne sont pas couverts par 1-3). Si un argument est de type intégral, il est jeté à double. Si aucun argument n'est long double, le `Promoted` type de retour est également long double, sinon le type de retour est toujours double .
Original:
A set of overloads or a function template for all combinations of arguments of arithmetic type not covered by 1-3). If any argument has integral type, it is cast to double. If any argument is long double, then the return type `Promoted` is also long double, otherwise the return type is always double.
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Sommaire

[modifier]Paramètres

 base - de base comme valeur à virgule flottanteOriginal: base as floating point valueThe text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. exp - exposant comme valeur à virgule flottanteOriginal: exponent as floating point valueThe text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. iexp - exposant comme valeur entièreOriginal: exponent as integer valueThe text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

[modifier]Retourne la valeur

`base` soulevé par le pouvoir (ou `exp` `iexp`) .
Original:
`base` raised by power (`exp` or `iexp`).
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Erreur de domaine se produit si `base` est 0 et `exp` est inférieure ou égale à 0. NAN est retourné dans ce cas .
Original:
Domain error occurs if `base` is 0 and `exp` is less than or equal to 0. NAN is returned in that case.
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Erreur de domaine se produit si `base` est négatif et `exp` n'est pas une valeur entière. NAN est retourné dans ce cas .
Original:
Domain error occurs if `base` is negative and `exp` is not an integer value. NAN is returned in that case.
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Erreur d'intervalle se produit si un débordement se produit. HUGEVAL est retourné dans ce cas .
Original:
Range error occurs if an overflow takes place. HUGEVAL is returned in that case.
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[modifier]Notes

`pow(float, int)` retours float jusqu'à ce que C + +11 (surcharge par 5) mais revient `double` puisque le C + +11 (surcharge par 4)
Original:
`pow(float, int)` returns float until C++11 (per overload 5) but returns `double` since C++11 (per overload 4)
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