Namespace
Varianti

nan, nanf, nanl

Da cppreference.com.
< c‎ | numeric‎ | math

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C
 
Numeri
 
Comuni funzioni matematiche
Funzioni
Original:
Functions
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Operazioni di 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)
Funzioni esponenziali
Original:
Exponential functions
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exp
exp2(C99)
expm1(C99)
log
log10
log1p(C99)
log2(C99)
Funzioni di risparmio energia
Original:
Power functions
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sqrt
cbrt(C99)
hypot(C99)
pow
Funzioni trigonometriche e iperboliche
Original:
Trigonometric and hyperbolic functions
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sinh
cosh
tanh
asinh(C99)
acosh(C99)
atanh(C99)
Errore e gamma funzioni
Original:
Error and gamma functions
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erf(C99)
erfc(C99)
lgamma(C99)
tgamma(C99)
Più vicini operazioni di interi in virgola mobile
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)
Floating funzioni di manipolazione di punti
Original:
Floating point manipulation functions
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ldexp
scalbn
scalbln		(C99)
(C99)
ilogb(C99)
logb(C99)
Classificazione
Original:
Classification
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fpclassify(C99)
isfinite(C99)
isinf(C99)
isnan(C99)
isnormal(C99)
signbit(C99)
Macro costanti
Original:
Macro constants
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Elemento definito nell'header <math.h>
float       nanf( const char* arg );
double      nan( const char* arg );
long double nanl( const char* arg );
Converte l'implementazione definita arg stringa di caratteri nel corrispondente valore tranquilla NaN. Il std::nan("string") chiamata è equivalente alla chiamata std::strtod("NAN(string)", (char**)NULL);.
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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[modifica] Parametri

arg -
stringa di caratteri narrow identifica il contenuto di un NaN, o una stringa vuota
Original:
narrow character string identifying the contents of a NaN, or an empty string
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[modifica] Valore di ritorno

Il valore NaN corrispondente alla stringa di identificazione arg o zero se il implemntation non supporta NaN tranquille.
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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[modifica] Vedi anche

(C99)
controlla se il numero dato è NaN
Original:
checks if the given number is NaN
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(funzione) [modifica]
C++ documentation for nan
Estratto da "https://it.cppreference.com/mwiki/index.php?title=c/numeric/math/nan&oldid=24738"