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std::ldexp

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ldexp
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definiert in Header <cmath>
float       ldexp( float arg, int exp );
double      ldexp( double arg, int exp );
long double ldexp( long double arg, int exp );
double      ldexp( Integral arg, int exp );
(seit C++11)
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

Renditen 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]
(C++11)
(C++11)
multipliziert eine Zahl durch FLT_RADIX potenziert
Original:
multiplies a number by FLT_RADIX raised to a power
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(Funktion) [edit]