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expm1

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< c‎ | numeric‎ | math

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C
 
Numeri
 
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)
Classificazione
Original:
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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Elemento definito nell'header <math.h>
float       expm1f( float arg );
double      expm1( double arg );
long double expm1l( long double arg );
Calcola la e (numero di Eulero, 2.7182818) elevato alla arg di potenza, meno 1. Questa funzione è più preciso l'espressione exp(arg)-1 arg se è vicino a zero.
Original:
Computes the e (Euler's number, 2.7182818) raised to the given power arg, minus 1. This function is more accurate than the expression exp(arg)-1 if arg is close to zero.
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[modifica] Parametri

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

earg
-1

Se il risultato è troppo grande per il tipo di fondo, l'errore si verifica e gamma HUGE_VAL viene restituito.
Original:
If the result is too large for the underlying type, range error occurs and HUGE_VAL is returned.
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[modifica] Vedi anche
ritorna e elevato alla potenza data (ex)
Original:
returns e raised to the given power (ex)
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(funzione) [modifica]
(C99)
torna 2 elevato alla potenza data (2x)
Original:
returns 2 raised to the given power (2x)
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(funzione) [modifica]
C++ documentation for expm1
Estratto da "https://it.cppreference.com/mwiki/index.php?title=c/numeric/math/expm1&oldid=24714"