modf

 

C

Lingua

Tipo di supporto

Gestione della memoria dinamica

La gestione degli errori

Programma di utilità

Data e ora utilità

Stringhe libreria

Algoritmi

Numeri

Ingresso / uscita supporto

Localizzazione supporto

Thread di supporto(C11)

Operazioni atomiche(C11)

 

Numeri

Comuni funzioni matematiche

Virgola mobile ambiente

Complex number arithmetics

Generazione di numeri casuali

Tipo-generic matematica

 

Comuni funzioni matematiche

Funzioni Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Operazioni di base Original: Basic operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
abs labs llabs imaxabs (C99) fabs div ldiv lldiv imaxdiv (C99) fmod	remainder (C99) remquo (C99) fma (C99) fmax (C99) fmin (C99) fdim (C99) nan nanf nanl (C99) (C99) (C99)
Funzioni esponenziali Original: Exponential functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
exp exp2 (C99) expm1 (C99)	log log10 log1p (C99) log2 (C99)
Funzioni di risparmio energia Original: Power functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
sqrt cbrt (C99)	hypot (C99) pow
Funzioni trigonometriche e iperboliche Original: Trigonometric and hyperbolic functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
sin cos tan asin acos atan atan2	sinh cosh tanh asinh (C99) acosh (C99) atanh (C99)
Errore e gamma funzioni Original: Error and gamma functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
erf (C99) erfc (C99)	lgamma (C99) tgamma (C99)
Più vicini operazioni di interi in virgola mobile Original: Nearest integer floating point operations The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ldexp scalbn scalbln (C99) (C99) ilogb (C99) logb (C99)	frexp modf nextafter nexttoward (C99) (C99) copysign (C99)
Classificazione Original: Classification The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
fpclassify (C99)
isfinite (C99)
isinf (C99)
isnan (C99)
isnormal (C99)
signbit (C99)
Macro costanti Original: Macro constants The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
HUGE_VALF HUGE_VAL HUGE_VALL (C99) (C99)	FP_NORMAL FP_SUBNORMAL FP_ZERO FP_INFINITE FP_NAN (C99) (C99) (C99) (C99) (C99)

 

Elemento definito nell'header <math.h>
float       modff(float x, float* iptr );
double      modf(double x, double* iptr );
longdouble modfl(longdouble x, longdouble* 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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Parametri

arg	-	valore in virgola mobile Original: floating point value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
iptr	-	puntatore al valore in virgola mobile per memorizzare la parte integrante Original: pointer to floating point value to store the integral part to The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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.

The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

Vedi anche

trunc (C99)	intera più vicina non superiore in grandezza rispetto al valore dato Original: nearest integer not greater in magnitude than the given value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione)
C++ documentation for modf