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Varianti

rint, lrint, llrint

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>
int rintf( float arg );
int rint( double arg );
int rintl( long double arg );
long lrintf( float arg );
long lrint( double arg );
long lrintl( long double arg );
long long llrintf( float arg );
long long llrint( double arg );
long long llrintl( long double arg );
Arrotonda il virgola mobile arg argomento in un valore intero in formato di virgola mobile, utilizzando la modalità corrente di arrotondamento. Se il risultato è diverso da arg (cioè, arg non era già un valore intero), la virgola mobile FE_INEXACT eccezione viene sollevata.
Original:
Rounds the floating-point argument arg to an integer value in floating-point format, using the current rounding mode. If the result differs from arg (i.e., arg was not an integer value already), the floating-point exception FE_INEXACT is raised.
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Indice

[modifica] Parametri

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

Il risultato intero di arg arrotondamento
Original:
The integer result of rounding arg
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[modifica] Note

L'unica differenza tra nearbyint e rint è che rint può sollevare in virgola mobile eccezione FE_INEXACT, pur non essendo mai nearbyint solleva.
Original:
The only difference between nearbyint and rint is that rint may raise the FE_INEXACT floating-point exception, while nearbyint never raises it.
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[modifica] Esempio

[modifica] Vedi anche

numero intero più vicino utilizzando la modalità corrente di arrotondamento
Original:
nearest integer using current rounding mode
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(funzione) [edit]
(C99)
intera più vicina non superiore in grandezza rispetto al valore dato
Original:
nearest integer not greater in magnitude than the given value
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(funzione) [edit]