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( long double 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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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.

Rückgabewert

true wenn arg negativ ist, false anders

Original:

true if arg is negative, false otherwise

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Siehe auch

abs(float) fabs	Absolutwert einer Fließkommazahl (|x|) Original: absolute value of a floating point value (|x|) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion)
copysign (C++11)	kopiert das Vorzeichen einer Gleitkommazahl Original: copies the sign of a 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. (Funktion)