operator* (<complex>)

Artikel
02/26/2013

Multipliziert zwei komplexe Zahlen, eine, oder das möglicherweise der Teilmenge des Typs für das tatsächliche und die imaginären Teile gehört.

template<class Type>
   complex<Type> operator*(
      const complex<Type>& _Left,
      const complex<Type>& _Right
   );
template<class Type>
   complex<Type> operator*(
      const complex<Type>& _Left,
      const Type& _Right
   );
template<class Type>
   complex<Type> operator*(
      const Type& _Left,
      const complex<Type>& _Right
   );

Parameter

_Left
Das erste von zwei komplexen Zahlen oder von Zahl, die vom Parametertyp für eine komplexe Zahl ist, die von multipliziert werden soll * Vorgang.
_Right
Das zweite von zwei komplexen Zahlen oder von Zahl, die vom Parametertyp für eine komplexe Zahl ist, die von multipliziert werden soll * Vorgang.

Rückgabewert

Die komplexe Zahl, die von der Multiplikation der zwei Zahlen entsteht, deren Wert und Typ durch den Parameter angegeben werden, gibt ein.

Hinweise

Der Vorgang wird überladen, sodass einfache arithmetische Operationen ohne die Konvertierung von Daten zu einem bestimmten Format ausgeführt werden können.

Beispiel

// complex_op_mult.cpp
// compile with: /EHsc
#include <complex>
#include <iostream>

int main( )
{
   using namespace std;
   double pi = 3.14159265359;

   // Example of the first member function
   // type complex<double> times type complex<double>
   complex <double> cl1 ( polar (3.0 , pi / 6 ) );
   complex <double> cr1 ( polar (2.0 , pi / 3 ) );
   complex <double> cs1 = cl1 * cr1;

   cout << "The left-side complex number is cl1 = " << cl1 << endl;
   cout << "The right-side complex number is cr1 = " << cr1 << endl;
   cout << "Product of two complex numbers is: cs1 = " << cs1 << endl;
   double abscs1 = abs ( cs1 );
   double argcs1 = arg ( cs1 );
   cout << "The modulus of cs1 is: " << abscs1 << endl;
   cout << "The argument of cs1 is: "<< argcs1 << " radians, which is "
        << argcs1 * 180 / pi << " degrees." << endl << endl;

   // Example of the second member function
   // type complex<double> times type double
   complex <double> cl2 ( polar ( 3.0 , pi / 6 ) );
   double cr2 =5;
   complex <double> cs2 = cl2 * cr2;

   cout << "The left-side complex number is cl2 = " << cl2 << endl;
   cout << "The right-side complex number is cr2 = " << cr2 << endl;
   cout << "Product of two complex numbers is: cs2 = " << cs2 << endl;
   double abscs2 = abs ( cs2 );
   double argcs2 = arg ( cs2 );
   cout << "The modulus of cs2 is: " << abscs2 << endl;
   cout << "The argument of cs2 is: "<< argcs2 << " radians, which is "
        << argcs2 * 180 / pi << " degrees." << endl << endl;

   // Example of the third member function
   // type double times type complex<double>
   double cl3 = 5;
   complex <double> cr3 ( polar (3.0 , pi / 6 ) );
   complex <double> cs3 = cl3 * cr3;

   cout << "The left-side complex number is cl3 = " << cl3 << endl;
   cout << "The right-side complex number is cr3 = " << cr3 << endl;
   cout << "Product of two complex numbers is: cs3 = " << cs3 << endl;
   double abscs3 = abs ( cs3 );
   double argcs3 = arg ( cs3 );
   cout << "The modulus of cs3 is: " << abscs3 << endl;
   cout << "The argument of cs3 is: "<< argcs3 << " radians, which is "
        << argcs3 * 180 / pi << " degrees." << endl << endl;
}

Beispielausgabe

Im Folgenden wird auf x86 ausgegeben.

The left-side complex number is cl1 = (2.59808,1.5)
The right-side complex number is cr1 = (1,1.73205)
Product of two complex numbers is: cs1 = (-6.20837e-013,6)
The modulus of cs1 is: 6
The argument of cs1 is: 1.5708 radians, which is 90 degrees.

The left-side complex number is cl2 = (2.59808,1.5)
The right-side complex number is cr2 = 5
Product of two complex numbers is: cs2 = (12.9904,7.5)
The modulus of cs2 is: 15
The argument of cs2 is: 0.523599 radians, which is 30 degrees.

The left-side complex number is cl3 = 5
The right-side complex number is cr3 = (2.59808,1.5)
Product of two complex numbers is: cs3 = (12.9904,7.5)
The modulus of cs3 is: 15
The argument of cs3 is: 0.523599 radians, which is 30 degrees.

Anforderungen

Header: <complex>

Namespace: std

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