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ldexp

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Gemeinsame mathematischen Funktionen
Funktionen
Original:
Functions
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Grundlegende Bedienung
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)
Exponentialfunktionen
Original:
Exponential functions
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exp
exp2(C99)
expm1(C99)
log
log10
log1p(C99)
log2(C99)
Power-Funktionen
Original:
Power functions
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sqrt
cbrt(C99)
hypot(C99)
pow
Trigonometrische und hyperbolische Funktionen
Original:
Trigonometric and hyperbolic functions
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sinh
cosh
tanh
asinh(C99)
acosh(C99)
atanh(C99)
Fehler-und Gamma-Funktionen
Original:
Error and gamma functions
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erf(C99)
erfc(C99)
lgamma(C99)
tgamma(C99)
Nächste ganze Zahl Fließkomma-Operationen
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-Point-Manipulation Funktionen
Original:
Floating point manipulation functions
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ldexp
scalbn
scalbln
(C99)
(C99)
ilogb(C99)
logb(C99)
Klassifizierung
Original:
Classification
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fpclassify(C99)
isfinite(C99)
isinf(C99)
isnan(C99)
isnormal(C99)
signbit(C99)
Makro Konstanten
Original:
Macro constants
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Defined in header <math.h>
float       ldexpf( float arg, int exp );
double      ldexp( double arg, int exp );
long double ldexpl( long double arg, int exp );
Multipliziert ein Gleitkommawert arg mit 2 hoch Stromversorgung exp .
Original:
Multiplies an floating point value arg by 2 raised to power exp.
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[Bearbeiten] Parameter

arg -
Floating-Point-Wert
Original:
floating point value
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exp -
Integerwert
Original:
integer value
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[Bearbeiten] Rückgabewert

Versandkosten x×2exp
Original:
Returns x×2exp
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Wenn das Ergebnis zu groß für den zugrunde liegenden Typ, tritt Bereich Fehler-und HUGE_VAL zurückgegeben .
Original:
If the result is too large for the underlying type, range error occurs and HUGE_VAL is returned.
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[Bearbeiten] Siehe auch

zersetzt eine Zahl in Mantisse und einer Leistung von 2
Original:
decomposes a number into significand and a power of 2
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(Funktion) [edit]
(C99)
(C99)
multipliziert eine Zahl durch FLT_RADIX potenziert
Original:
multiplies a number by FLT_RADIX raised to a power
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(Funktion) [edit]