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nan, nanf, nanl

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< c‎ | numeric‎ | math

 
 
 
Fonctions mathématiques courantes
Fonctions
Original:
Functions
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Opérations de base
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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
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Exponential functions
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exp
exp2 (C99)
expm1 (C99)
log
log10
log1p (C99)
log2 (C99)
Les fonctions de puissance
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Power functions
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sqrt
cbrt (C99)
hypot (C99)
pow
Les fonctions trigonométriques et hyperboliques
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Trigonometric and hyperbolic functions
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sinh
cosh
tanh
asinh (C99)
acosh (C99)
atanh (C99)
Erreur fonctions et gamma
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Error and gamma functions
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erf (C99)
erfc (C99)
lgamma (C99)
tgamma (C99)
Entier le plus proche opérations en virgule flottante
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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
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Floating point manipulation functions
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ldexp
scalbn
scalbln
(C99)
(C99)
ilogb (C99)
logb (C99)
Classification
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Classification
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fpclassify (C99)
isfinite (C99)
isinf (C99)
isnan (C99)
isnormal (C99)
signbit (C99)
Macro constantes
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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>
float       nanf( const char* arg );
double      nan( const char* arg );
long double nanl( const char* arg );
Convertit la mise en œuvre définies par arg chaîne de caractères dans la valeur NaN correspondant calme. La std::nan("string") appel est équivalent à la std::strtod("NAN(string)", (char**)NULL); appel .
Original:
Converts the implementation-defined character string arg into the corresponding quiet NaN value. The call std::nan("string") is equivalent to the call std::strtod("NAN(string)", (char**)NULL);.
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[modifier] Paramètres

arg -
chaîne de caractères identifiant étroite le contenu d'un NaN, ou une chaîne vide
Original:
narrow character string identifying the contents of a NaN, or an empty string
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[modifier] Retourne la valeur

La valeur NaN qui correspond à la chaîne de caractères identifiant arg ou zéro si la implemntation ne supporte pas NaN silencieux .
Original:
The NaN value that corresponds to the identifying string arg or zero if the implemntation does not support quiet NaNs.
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[modifier] Voir aussi

(C99)
vérifie si le nombre donné est NaN
Original:
checks if the given number is NaN
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(fonction) [edit]