pow

Restituisce il numero complesso ottenuto genera una base che rappresenta un numero complesso alla potenza di un altro numero complesso.

template<class Type>
   complex<Type> pow(
      const complex<Type>& _Base, 
      int _Power
   );
template<class Type>
   complex<Type> pow(
      const complex<Type>& _Base,
      const Type& _Power
   );
template<class Type>
   complex<Type> pow(
      const complex<Type>& _Base,
      const complex<Type>& _Power
   );
template<class Type>
   complex<Type> pow(
      const Type& _Base,
      const complex<Type>& _Power
   );

Parametri

• _Base
  Il numero complesso o numero del tipo di parametro per il numero complesso che costituisce la base da creare a una potenza dalla funzione membro.

• _Power
  Integer o il numero complesso o il numero del tipo di parametro per il numero complesso che è la potenza della base deve essere generata dalla funzione membro.

Valore restituito

Il numero complesso ottenuto generando la base specificata alla potenza specificata.

Note

Le funzioni ognuna efficacemente convertito entrambi gli operandi al tipo restituito e quindi restituisce left convertito alla potenza right.

Taglia di branch è lungo l'asse reale negativo.

Esempio

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

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

   // First member function
   // type complex<double> base & type integer power
   complex <double> cb1 ( 3 , 4);
   int cp1 = 2;
   complex <double> ce1 = pow ( cb1 ,cp1 );

   cout << "Complex number for base cb1 = " << cb1 << endl;
   cout << "Integer for power = " << cp1 << endl;
   cout << "Complex number returned from complex base and integer power:"
        << "\n ce1 = cb1 ^ cp1 = " << ce1 << endl;
   double absce1 = abs ( ce1 );
   double argce1 = arg ( ce1 );
   cout << "The modulus of ce1 is: " << absce1 << endl;
   cout << "The argument of ce1 is: "<< argce1 << " radians, which is " 
        << argce1 * 180 / pi << " degrees." << endl << endl; 

   // Second member function
   // type complex<double> base & type double power
   complex <double> cb2 ( 3 , 4 );
   double cp2 = pi;
   complex <double> ce2 = pow ( cb2 ,cp2 );

   cout << "Complex number for base cb2 = " << cb2 << endl;
   cout << "Type double for power cp2 = pi = " << cp2 << endl;
   cout << "Complex number returned from complex base and double power:"
        << "\n ce2 = cb2 ^ cp2 = " << ce2 << endl;
   double absce2 = abs ( ce2 );
   double argce2 = arg ( ce2 );
   cout << "The modulus of ce2 is: " << absce2 << endl;
   cout << "The argument of ce2 is: "<< argce2 << " radians, which is " 
        << argce2 * 180 / pi << " degrees." << endl << endl;

   // Third member function
   // type complex<double> base & type complex<double> power
   complex <double> cb3 ( 3 , 4 );
   complex <double> cp3 ( -2 , 1 );
   complex <double> ce3 = pow ( cb3 ,cp3 );

   cout << "Complex number for base cb3 = " << cb3 << endl;
   cout << "Complex number for power cp3= " << cp3 << endl;
   cout << "Complex number returned from complex base and complex power:"
        << "\n ce3 = cb3 ^ cp3 = " << ce3 << endl;
   double absce3 = abs ( ce3 );
   double argce3 = arg ( ce3 );
   cout << "The modulus of ce3 is: " << absce3 << endl;
   cout << "The argument of ce3 is: "<< argce3 << " radians, which is " 
        << argce3 * 180 / pi << " degrees." << endl << endl; 

   // Fourth member function
   // type double base & type complex<double> power
   double cb4 = pi;
   complex <double> cp4 ( 2 , -1 );
   complex <double> ce4 = pow ( cb4 ,cp4 );

   cout << "Type double for base cb4 = pi = " << cb4 << endl;
   cout << "Complex number for power cp4 = " << cp4 << endl;
   cout << "Complex number returned from double base and complex power:"
        << "\n ce4 = cb4 ^ cp4 = " << ce4 << endl;
   double absce4 = abs ( ce4 );
   double argce4 = arg ( ce4 );
   cout << "The modulus of ce4 is: " << absce4 << endl;
   cout << "The argument of ce4 is: "<< argce4 << " radians, which is " 
        << argce4 * 180 / pi << " degrees." << endl << endl; 
}

Requisiti

intestazione: <complex>

Spazio dei nomi: deviazione standard