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    <metanoindex/>

     
    C++
     
    Bibliothque Numerics
    Fonctions mathmatiques courantes
    Virgule flottante environnement
    Nombres complexes
    Tableaux numriques
    La gnration de nombres pseudo-alatoires
    Moment de la compilation arithmtique rationnelle (C++11)
    Gnriques des oprations numriques
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    Generic numeric operations
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    iota (C++11)
    accumulate
    inner_product
    adjacent_difference
    partial_sum
     
    Fonctions mathmatiques courantes
    {{{1}}}
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    {{{2}}}
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    Fonctions
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    Functions
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    Oprations 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
    Les fonctions trigonomtriques et hyperboliques
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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 oprations en virgule flottante
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    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
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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)
     
    <tbody> </tbody>
    Dclar dans l'en-tte <cmath>
    float ceil( float arg );
    double ceil( double arg );
    long double ceil( long double arg );
    double ceil( Integral arg );
    		 (depuis C++11)
    Entier le plus proche calcule pas moins de arg .
    Original:
    Computes nearest integer not less than arg.
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    Paramtres

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

    Le plus proche entier suprieur ou gal arg
    Original:
    Nearest integer not less than arg
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    [[Image:
    Retourne la valeur
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    {{{2}}}
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    |200x200px]]
    Argument

    Notes

    Si l'argument est infini (positif ou ngatif) ou zro (positif ou ngatif), la valeur de retour est le mme que l'argument .
    Original:
    If the argument is infinity (positive or negative) or zero (positive or negative), the return value is the same as the argument.
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    Reprsentable le plus lev valeurs virgule flottante sont des nombres entiers exacts dans tous les standards des formats virgule flottante, de sorte que cette fonction ne jamais dbordements .
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    The largest representable floating-point values are exact integers in all standard floating-point formats, so this function never overflows.
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    Cette fonction peut, mais n'est pas tenu de, lever FE_INEXACT exceptions de virgule flottante pour les arguments non entiers .
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    This function may, but is not required to, raise FE_INEXACT floating-point exceptions for non-integer arguments.
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    Exemple

    #include <cmath>
#include <iostream>
 
int main()
{
    double a = 12.0;
    std::cout << std::fixed;
    std::cout << std::ceil(12.0) << '\n';
    std::cout << std::ceil(12.1) << '\n';
    std::cout << std::ceil(12.5) << '\n';
    std::cout << std::ceil(12.9) << '\n';
    std::cout << std::ceil(13.0) << '\n';}

    Rsultat : 

    12.000000
13.000000
13.000000
13.000000
13.000000

    Voir aussi
    entier le plus proche n'est pas suprieure la valeur donne
    Original:
    nearest integer not greater than the given value
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    (fonction) [edit]
    (C++11)
    entier le plus proche n'est pas suprieure en grandeur la valeur donne
    Original:
    nearest integer not greater in magnitude than the given value
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    (fonction) [edit]
    (C++11)
    (C++11)
    (C++11)
    entier le plus proche, arrondi en s'loignant de zro dans les cas de transition
    Original:
    nearest integer, rounding away from zero in halfway cases
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    (fonction) [edit]
    (C++11)
    (C++11)
    (C++11)
    entier le plus proche en utilisant le mode d'arrondi courant l'exception
    si le rsultat est diffrent
    Original:
    nearest integer using current rounding mode with
    exception if the result differs
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    (fonction) [edit]
    (C++11)
    entier le plus proche en utilisant le mode d'arrondi courant
    Original:
    nearest integer using current rounding mode
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    (fonction) [edit]
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