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isnan

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< c‎ | numeric‎ | math

 
 
 
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)
 
Defined in header <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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[modifier] Paramètres

arg -
valeur du point flottant
Original:
floating point value
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[modifier] 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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[modifier] Voir aussi

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]