Namespace
Varianti

fpclassify

Da cppreference.com.
< c‎ | numeric‎ | math

 
 
 
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(C99)
remquo(C99)
fma(C99)
fmax(C99)
fmin(C99)
fdim(C99)
nan
nanf
nanl
(C99)
(C99)
(C99)
Funzioni esponenziali
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Exponential functions
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exp
exp2(C99)
expm1(C99)
log
log10
log1p(C99)
log2(C99)
Funzioni di risparmio energia
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Power functions
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sqrt
cbrt(C99)
hypot(C99)
pow
Funzioni trigonometriche e iperboliche
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Trigonometric and hyperbolic functions
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sinh
cosh
tanh
asinh(C99)
acosh(C99)
atanh(C99)
Errore e gamma funzioni
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Error and gamma functions
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erf(C99)
erfc(C99)
lgamma(C99)
tgamma(C99)
Più vicini operazioni di interi in virgola mobile
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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)
Floating funzioni di manipolazione di punti
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Floating point manipulation functions
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ldexp
scalbn
scalbln
(C99)
(C99)
ilogb(C99)
logb(C99)
Classificazione
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Classification
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fpclassify(C99)
isfinite(C99)
isinf(C99)
isnan(C99)
isnormal(C99)
signbit(C99)
Macro costanti
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Macro constants
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Defined in header <math.h>
#define fpclassify(arg) /* implementation defined */
Categorizza arg floating point, nelle seguenti categorie: zero, subnormali, normale, infiniti, NAN, o l'attuazione categoria definita. La macro restituisce un valore integrale.
Original:
Categorizes floating point value arg into the following categories: zero, subnormal, normal, infinite, NAN, or implementation-defined category. The macro returns an integral value.
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[modifica] Parametri

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

Uno dei FP_INFINITE, FP_NAN, FP_NORMAL, FP_SUBNORMAL, FP_ZERO o implementazione tipo definito, specificando la categoria di arg.
Original:
One of FP_INFINITE, FP_NAN, FP_NORMAL, FP_SUBNORMAL, FP_ZERO or implementation-defined type, specifying the category of arg.
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[modifica] Vedi anche

controlla se il numero dato ha un valore finito
Original:
checks if the given number has finite value
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(funzione) [edit]
(C99)
controlla se il numero dato è infinito
Original:
checks if the given number is infinite
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(funzione) [edit]
(C99)
controlla se il numero dato è NaN
Original:
checks if the given number is NaN
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(funzione) [edit]
controlla se il numero dato è normale
Original:
checks if the given number is normal
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(funzione) [edit]
C++ documentation for fpclassify