hypot

 

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       hypotf(float x, float y );
double      hypot(double x, double y );
longdouble hypotl(longdouble x, longdouble y );

Calcola la radice quadrata della somma dei quadrati di x e y, senza troppopieno indebito o underflow intermedi del calcolo. Questa è la lunghezza dell'ipotenusa di un triangolo rettangolo con lati di lunghezza x e y, o la distanza del punto (x,y) dall'origine (0,0), o la grandezza di un x+iy numero complesso

Original:

Computes the square root of the sum of the squares of x and y, without undue overflow or underflow at intermediate stages of the computation. This is the length of the hypotenuse of a right-angled triangle with sides of length x and y, or the distance of the point (x,y) from the origin (0,0), or the magnitude of a complex number x+iy

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Parametri

x	-	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.
y	-	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.

Valore di ritorno

L'ipotenusa di un triangolo rettangolo, √x2
+y2
.

Original:

The hypotenuse of a right-angled triangle, √x2
+y2
.

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Eccezioni

Se il risultato overflow, un errore di campo si può verificare e FE_OVERFLOW può essere sollevata.

Original:

If the result overflows, a range error may occur and FE_OVERFLOW may be raised.

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Se il risultato è subnormale, un errore può verificarsi underflow e FE_UNDERFLOW può essere sollevata.

Original:

If the result is subnormal, an underflow error may occur and FE_UNDERFLOW may be raised.

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Note

Strategia di attuazione tipico è quello di calcolare l'equivalente di u√1+(

v

u

)2
dove u è max(x,y) e v è min(x,y).

Original:

Typical implementation strategy is to calculate an equivalent of u√1+(

v

u

)2
where u is max(x,y) and v is min(x,y).

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Vedi anche

sqrt	calcola la radice quadrata (√x) Original: computes square root (√x) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (funzione)
pow	solleva un numero alla potenza data (xy) Original: raises a number to the given power (xy) 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 hypot