std::expm1 – cppreference.com

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definiert in Header `<cmath>`

`float expm1( float arg );`		(seit C++11)

`double expm1( double arg );`		(seit C++11)

`long double expm1( long double arg );`		(seit C++11)

`double expm1( Integral arg );`		(seit C++11)

Berechnet den e (Eulersche Zahl, 2.7182818) angehoben, um die Macht gegeben arg, minus 1. Diese Funktion ist genauer als der Ausdruck std::exp(arg)-1 wenn arg nahe Null ist .

Original:

Computes the e (Euler's number, 2.7182818) raised to the given power arg, minus 1. This function is more accurate than the expression std::exp(arg)-1 if arg is close to zero.

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Parameter

arg

Floating-Point-Wert

Original:

floating point value

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Rückgabewert

earg
-1

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


exp	Renditen e an die angegebene Leistung (e^x) angehoben Original: returns e raised to the given power (e^x) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion) [edit]

log1p (C++11)	natürlichen Logarithmus (zur Basis e) von 1 plus die angegebene Anzahl Original: natural logarithm (to base e) of 1 plus the given number The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion) [edit]

exp2 (C++11)	Renditen 2 an die angegebene Leistung (2^x) angehoben Original: returns 2 raised to the given power (2^x) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion) [edit]