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std::signbit

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definiert in Header <cmath>
bool signbit(float arg );
(seit C++11)
bool signbit(double arg );
(seit C++11)
bool signbit(longdouble arg );
(seit C++11)


Bestimmt, ob die angegebene Gleitkommazahl arg negativ ist .
Original:
Determines if the given floating point number arg is negative.
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[Bearbeiten]Parameter

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

true wenn arg negativ ist, false anders
Original:
true if arg is negative, false otherwise
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[Bearbeiten]Siehe auch

Absolutwert einer Fließkommazahl (|x|)
Original:
absolute value of a floating point value (|x|)
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(Funktion)[edit]
(C++11)
kopiert das Vorzeichen einer Gleitkommazahl
Original:
copies the sign of a floating point value
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(Funktion)[edit]
close