conj
Retourne le conjugué complexe d'un nombre complexe.
template<class Type>
complex<Type> conj(
const complex<Type>& _ComplexNum
);
Paramètres
- _ComplexNum
Le nombre complexe dont le conjugué complexes doit être retourné.
Valeur de retour
Le conjugué complexe du nombre complexe d'entrée.
Notes
Le conjugué complexe d'un nombre complexe a + bi est a – bi. Le produit d'un nombre complexe et son conjugué est la norme du nombre a²+ b².
Exemple
// complex_conj.cpp
// compile with: /EHsc
#include <complex>
#include <iostream>
int main( )
{
using namespace std;
complex <double> c1 ( 4.0 , 3.0 );
cout << "The complex number c1 = " << c1 << endl;
double dr1 = real ( c1 );
cout << "The real part of c1 is real ( c1 ) = "
<< dr1 << "." << endl;
double di1 = imag ( c1 );
cout << "The imaginary part of c1 is imag ( c1 ) = "
<< di1 << "." << endl;
complex <double> c2 = conj ( c1 );
cout << "The complex conjugate of c1 is c2 = conj ( c1 )= "
<< c2 << endl;
double dr2 = real ( c2 );
cout << "The real part of c2 is real ( c2 ) = "
<< dr2 << "." << endl;
double di2 = imag ( c2 );
cout << "The imaginary part of c2 is imag ( c2 ) = "
<< di2 << "." << endl;
// The real part of the product of a complex number
// and its conjugate is the norm of the number
complex <double> c3 = c1 * c2;
cout << "The norm of (c1 * conj (c1) ) is c1 * c2 = "
<< real( c3 ) << endl;
}
Configuration requise
En-tête :: <complexe>
Espace de noms : std