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std::isfinite

Da cppreference.com.
< cpp‎ | numeric‎ | math

 
 
Numeri libreria
Comuni funzioni matematiche
Virgola mobile ambiente
I numeri complessi
Array numerici
Pseudo-casuale generazione
In fase di compilazione aritmetica razionale (C++11)
Generici operazioni numeriche
Original:
Generic numeric operations
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iota(C++11)
accumulate
inner_product
adjacent_difference
partial_sum
 
Comuni funzioni matematiche
Funzioni
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Functions
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Operazioni di 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)
Funzioni esponenziali
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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)
Funzioni di risparmio energia
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Power functions
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sqrt
cbrt(C++11)
hypot(C++11)
pow
Funzioni trigonometriche e iperboliche
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Trigonometric and hyperbolic functions
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sinh
cosh
tanh
asinh(C++11)
acosh(C++11)
atanh(C++11)
Errore e gamma funzioni
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Error and gamma functions
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erf(C++11)
erfc(C++11)
lgamma(C++11)
tgamma(C++11)
Più vicini operazioni di interi in virgola mobile
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Nearest integer floating point operations
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ceil
floor
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lround
llround
(C++11)
(C++11)
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trunc(C++11)
nearbyint(C++11)
rint
lrint
llrint
(C++11)
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Floating funzioni di manipolazione di punti
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Floating point manipulation functions
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ldexp
scalbn
scalbln
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(C++11)
ilogb(C++11)
logb(C++11)
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modf
nextafter
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(C++11)
copysign(C++11)
Classificazione / confronto
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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 costanti
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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)
 
Defined in header <cmath>
bool isfinite( float arg );
(dal C++11)
bool isfinite( double arg );
(dal C++11)
bool isfinite( long double arg );
(dal C++11)
Determina se il dato floating arg numero di punto ha un valore finito vale a dire che è normale, subnormale o nullo, ma non infinito o NAN.
Original:
Determines if the given floating point number arg has finite value i.e. it is normal, subnormal or zero, but not infinite or NAN.
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[modifica] Parametri

arg -
valore in virgola mobile
Original:
floating point value
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[modifica] Valore di ritorno

Valore true se arg ha un valore finito, false altrimenti
Original:
true value if arg has finite value, false otherwise
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[modifica] Vedi anche

categorizza il valore dato in virgola mobile
Original:
categorizes the given floating point value
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(funzione) [edit]
(C++11)
controlla se il numero dato è infinito
Original:
checks if the given number is infinite
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(funzione) [edit]
(C++11)
controlla se il numero dato è NaN
Original:
checks if the given number is NaN
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(funzione) [edit]
(C++11)
controlla se il numero dato è normale
Original:
checks if the given number is normal
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(funzione) [edit]