std::log1p – cppreference.com

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definiert in Header `<cmath>`

`float log1p( float arg );`		(seit C++11)

`double log1p( double arg );`		(seit C++11)

`long double log1p( long double arg );`		(seit C++11)

`double log1p( Integral arg );`		(seit C++11)

Berechnet den natürlichen (Basis e) Logarithmus 1+arg. Diese Funktion ist genauer als der Ausdruck std::log(1+arg) wenn arg nahe Null ist .

Original:

Computes the natural (base e) logarithm of 1+arg. This function is more precise than the expression std::log(1+arg) if arg is close to zero.

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arg

Floating-Point-Wert

Original:

floating point value

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ln(1+arg)

Domain-Fehler tritt auf, wenn arg negativ ist. NAN wird in diesem Fall wieder .

Original:

Domain error occurs if arg is negative. NAN is returned in that case.

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Bereichs-Fehler tritt auf, wenn arg ist 0. -HUGE_VAL wird in diesem Fall wieder .

Original:

Range error occurs if arg is 0. -HUGE_VAL is returned in that case.

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log	berechnet natürlichen (base e) Logarithmus (zur Basis e) (ln(x)) Original: computes natural (base e) logarithm (to base e) (ln(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]

expm1 (C++11)	Renditen e an die angegebene Potenz, minus eins (e^x-1) Original: returns e raised to the given power, minus one (e^x-1) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktion) [edit]

log10	berechnet gemeinsamen (base 10) Logarithmus (log₁₀(x)) Original: computes common (base 10) logarithm (log₁₀(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]

log2 (C++11)	Logarithmus zur Basis 2 der bestimmten Anzahl Original: base 2 logarithm of 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]