Namespace
Varianti

modf

Da cppreference.com.
< c‎ | numeric‎ | math

 
 
 
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)
frexp
modf
nextafter
nexttoward
(C99)
(C99)
copysign(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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Defined in header <math.h>
float       modff( float x, float* iptr );
double      modf( double x, double* iptr );
long double modfl( long double x, long double* iptr );
Si decompone in virgola mobile x valore del punto in parti integrali e frazionarie, ciascuno con lo stesso tipo e segno come x. La parte integrale (in formato di virgola mobile) viene memorizzato nell'oggetto puntato da iptr.
Original:
Decomposes given floating point value x into integral and fractional parts, each having the same type and sign as x. The integral part (in floating-point format) is stored in the object pointed to by iptr.
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Indice

[modifica] Parametri

arg -
valore in virgola mobile
Original:
floating point value
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iptr -
puntatore al valore in virgola mobile per memorizzare la parte integrante
Original:
pointer to floating point value to store the integral part to
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[modifica] Valore di ritorno

La parte frazionaria del x con lo stesso segno x. La parte integrale viene messa in valore puntato da iptr.
Original:
The fractional part of x with the same sign as x. The integral part is put into the value pointed to by iptr.
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[modifica] Esempio

[modifica] Vedi anche

(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]