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std::exp2

De cppreference.com
< 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
adjacent_difference
partial_sum
 
Fonctions mathématiques courantes
{{{1}}}
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{{{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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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
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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
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Power functions
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sqrt
cbrt (C++11)
hypot (C++11)
pow
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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
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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
round
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llround
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(C++11)
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trunc (C++11)
nearbyint (C++11)
rint
lrint
llrint
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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)
ilogb (C++11)
logb (C++11)
frexp
modf
nextafter
nexttoward
(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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FP_NORMAL
FP_SUBNORMAL
FP_ZERO
FP_INFINITE
FP_NAN
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
</div>
 
</div>
Defined in header <cmath>
double      exp2( double n );
(depuis C++11)
float       exp2( float n );
(depuis C++11)
long double exp2( long double n );
(depuis C++11)
double      exp2( Integral n );
(depuis C++11)
Calcule 2 élevé à la puissance donnée n
Original:
Computes 2 raised to the given power n
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[modifier] Paramètres

n -
valeur du point flottant
Original:
floating point value
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[modifier] Retourne la valeur

2 élevé à la n (i.e. 2n)
Original:
2 raised to the n (i.e. 2n)
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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 .
Original:
If the result is too large for the underlying type, range error occurs and HUGE_VAL is returned.
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[modifier] Voir aussi

retours e à la puissance donnée (ex)
Original:
returns e raised to the given power (ex)
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(fonction) [edit]
(C++11)
logarithme en base 2 d'un nombre donné
Original:
base 2 logarithm of the given number
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(fonction) [edit]
calcule naturel (base e) logarithme (de base e) (ln(x))
Original:
computes natural (base e) logarithm (to base e) (ln(x))
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(fonction) [edit]
soulève un certain nombre à la puissance donnée (xy)
Original:
raises a number to the given power (xy)
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(fonction) [edit]