Espaces de noms
Variantes

    isnan

    De cppreference.com
    < c | numeric | math

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    <metanoindex/>

     
    C
     
    Numerics
     
    Fonctions mathématiques courantes
    Fonctions
    Original:
    Functions
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    Opérations de base
    Original:
    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
    Original:
    Exponential functions
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    exp
    exp2 (C99)
    expm1 (C99)
    log
    log10
    log1p (C99)
    log2 (C99)
    Les fonctions de puissance
    Original:
    Power functions
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    sqrt
    cbrt (C99)
    hypot (C99)
    pow
    Les fonctions trigonométriques et hyperboliques
    Original:
    Trigonometric and hyperbolic functions
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    sinh
    cosh
    tanh
    asinh (C99)
    acosh (C99)
    atanh (C99)
    Erreur fonctions et gamma
    Original:
    Error and gamma functions
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    erf (C99)
    erfc (C99)
    lgamma (C99)
    tgamma (C99)
    Entier le plus proche opérations en virgule flottante
    Original:
    Nearest integer floating point operations
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    ceil
    floor
    round
    lround
    llround    		 (C99)
    (C99)
    (C99)
    trunc (C99)
    nearbyint (C99)
    rint
    lrint
    llrint    		 (C99)
    (C99)
    (C99)
    Flottant fonctions de manipulation de points
    Original:
    Floating point manipulation functions
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    ldexp
    scalbn
    scalbln    		 (C99)
    (C99)
    ilogb (C99)
    logb (C99)
    Classification
    Original:
    Classification
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    fpclassify (C99)
    isfinite (C99)
    isinf (C99)
    isnan (C99)
    isnormal (C99)
    signbit (C99)
    Macro constantes
    Original:
    Macro constants
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    FP_NORMAL
    FP_SUBNORMAL
    FP_ZERO
    FP_INFINITE
    FP_NAN    		 (C99)
    (C99)
    (C99)
    (C99)
    (C99)
     
    <tbody> </tbody>
    Déclaré dans l'en-tête <math.h>
    #define isnan(arg) /* implementation defined */
    Détermine si la donnée arg flottante nombre à virgule n'est pas-a-number (NaN). La macro renvoie une valeur entière .
    Original:
    Determines if the given floating point number arg is not-a-number (NaN). The macro returns an integral value.
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    Paramètres

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

    Non nulle valeur intégrale si arg est NaN, 0 autrement .
    Original:
    Nonzero integral value if arg is NaN, 0 otherwise.
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    Voir aussi

    (C99)
    catégorise la valeur du point donné flottante
    Original:
    categorizes the given floating point value
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    (fonction) [edit]
    (C99)
    vérifie si le nombre donné a une valeur finie
    Original:
    checks if the given number has finite value
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    (fonction) [edit]
    (C99)
    vérifie si le nombre donné est infini
    Original:
    checks if the given number is infinite
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    (fonction) [edit]
    (C99)
    vérifie si le nombre donné est normal
    Original:
    checks if the given number is normal
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    (fonction) [edit]
    C++ documentation for isnan