ldexp

 

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Dynamische Speicherverwaltung

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Thread-Unterstützung(C11)

Atomare Operationen(C11)

 

Numerics

Gemeinsame mathematischen Funktionen

Floating-Point-Umgebung

Complex number arithmetics

Generierung von Zufallszahlen

Typ-generic math

 

Gemeinsame mathematischen Funktionen

Funktionen Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
Grundlegende Bedienung 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)
Exponentialfunktionen 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)
Power-Funktionen 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
Trigonometrische und hyperbolische Funktionen 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)
Fehler-und Gamma-Funktionen 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)
Nächste ganze Zahl Fließkomma-Operationen 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-Point-Manipulation Funktionen 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)
Klassifizierung 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)
Makro Konstanten 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)

 

definiert in Header <math.h>
float       ldexpf(float arg, intexp);
double      ldexp(double arg, intexp);
longdouble ldexpl(longdouble arg, intexp);

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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Parameter

arg	-	Floating-Point-Wert 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.
exp	-	Integerwert Original: integer value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

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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Siehe auch

frexp	zersetzt eine Zahl in Mantisse und einer Leistung von 2 Original: decomposes a number into significand and a power of 2 The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion)
scalbn scalbln (C99) (C99)	multipliziert eine Zahl durch FLT_RADIX potenziert Original: multiplies a number by FLT_RADIX raised to a power The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion)
C++ documentation for ldexp