# std::log<div class="t-tr-text">(Std :: complex)<div class="t-tr-dropdown"><div><div><div class="t-tr-dropdown-arrow-border"></div><div class="t-tr-dropdown-arrow"></div><div class="t-tr-dropdown-h">Original:</div><div class="t-tr-dropdown-orig">(std::complex)</div><div class="t-tr-dropdown-notes">The text has been machine-translated via [http://translate.google.com Google Translate].<br/> You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.</div></div></div></div></div>

< cpp‎ | numeric‎ | complex

C++
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Numerik-Bibliothek
Gemeinsame mathematischen Funktionen
Floating-Point-Umgebung
Komplexe Zahlen
Numerische Arrays
Pseudo-Zufallszahlen
Compile-time rationale Arithmetik (C++11)
Generische numerische Operationen
Original:
Generic numeric operations
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 iota (C++11)
 accumulate
 inner_product
 partial_sum

Komplexe Zahlen
Member-Funktionen
Original:
Member functions
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 complex::complex
 complex::operator=
 complex::real
 complex::imag
 complex::operator+=complex::operator-=complex::operator*=complex::operator/=
Non-Member-Funktionen
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Non-member functions
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 operator==operator!=
 operator<>
 real
 imag
 abs
 arg
 norm
 conj
 proj (C++11)
 polar
Exponentialfunktionen
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Exponential functions
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 exp
 log
 log10
Power-Funktionen
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Power functions
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 pow
 sqrt
Trigonometrische Funktionen
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Trigonometric functions
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 sin
 cos
 tan
 asin (C++11)
 acos (C++11)
 atan (C++11)
Hyperbolische Funktionen
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Hyperbolic functions
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 sinh
 cosh
 tanh
 asinh (C++11)
 acosh (C++11)
 atanh (C++11)

 Defined in header template< class T > complex log( const complex& z );
Berechnet komplexen natürlichen (base e) Logarithmus einer komplexen Wert `z` mit einem Zweig entlang der negativen reellen Achse geschnitten .
Original:
Computes complex natural (base e) logarithm of a complex value `z` with a branch cut along the negative real axis.
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### [Bearbeiten]Parameter

 z - komplexen WertOriginal: complex valueThe text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

### [Bearbeiten]Rückgabewert

Komplexen natürlichen Logarithmus `z`
Original:
Complex natural logarithm of `z`
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### [Bearbeiten]Siehe auch

 exp(std::complex) complex base e exponential (Funktions-Template)  log10(std::complex) complex common logarithm with the branch cuts along the negative real axis (Funktions-Template)