# std::arg<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++
 Sprache Concepts Utilities-Bibliothek Strings Bibliothek Container-Bibliothek Algorithmen-Bibliothek Iteratoren Bibliothek Numerik-Bibliothek Input / Output-Bibliothek Lokalisierungen Bibliothek Reguläre Ausdrücke Bibliothek (C++11) Atomare Operationen Bibliothek (C++11) Thread Support-Bibliothek (C++11)

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
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 iota (C++11)
 accumulate
 inner_product
 partial_sum

Komplexe Zahlen
Member-Funktionen
Original:
Member functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 complex::complex
 complex::operator=
 complex::real
 complex::imag
 complex::operator+=complex::operator-=complex::operator*=complex::operator/=
Non-Member-Funktionen
Original:
Non-member functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 operator==operator!=
 operator<>
 real
 imag
 abs
 arg
 norm
 conj
 proj (C++11)
 polar
Exponentialfunktionen
Original:
Exponential functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 exp
 log
 log10
Power-Funktionen
Original:
Power functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 pow
 sqrt
Trigonometrische Funktionen
Original:
Trigonometric functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 sin
 cos
 tan
 asin (C++11)
 acos (C++11)
 atan (C++11)
Hyperbolische Funktionen
Original:
Hyperbolic functions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
 sinh
 cosh
 tanh
 asinh (C++11)
 acosh (C++11)
 atanh (C++11)

 Defined in header template< class T > T arg( const complex& z );
Liefert die Phasenwinkel der komplexen Zahl `z`, dh atan2(std::imag(z), std::real(z)) .
Original:
Returns the phase angle of the complex number `z`, i.e. atan2(std::imag(z), std::real(z)).
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

### [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

der Phasenwinkel `z`
Original:
the phase angle of `z`
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

### [Bearbeiten]Siehe auch

 norm gibt die quadrierte Größe Original: returns the squared magnitude The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktions-Template)  conj ergibt die komplexe Konjugierte Original: returns the complex conjugate The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktions-Template)  polar konstruiert eine komplexe Zahl von Betrag und Phasenwinkel Original: constructs a complex number from magnitude and phase angle The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (Funktions-Template)