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norm() function in C++ with Examples
  • Last Updated : 10 Oct, 2018

The norm() function is defined in the complex header file. This function is used to return the squared magnitude of the complex number z.

Syntax:

template<class T> T norm (const complex<T>& z);

Parameter:

  • z: It represents the given complex number.

Return: It returns the squared magnitude of the complex number.

Below programs illustrate the above function:-



Example 1:-

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// C++ program to demonstrate
// example of norm() function.
   
#include <bits/stdc++.h>
using namespace std;
   
// driver function
int main ()
{
  // initializing the complex: (5.0+12.0i)
  complex<double> complexnumber (5.0, 12.0);
   
  // use of norm()function
  cout << "The norm of " << complexnumber << " is ";
  cout << norm(complexnumber) << endl;
   
  return 0;
}

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Output:

The norm of (5,12) is 169

Example 2:-

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// C++ program to demonstrate
// example of norm() function.
   
 #include <bits/stdc++.h>
using namespace std;
   
// driver function
int main ()
{
  // initializing the complex: (4.0+3.0i)
  complex<double> complexnumber (4.0, 3.0);
   
  // use of norm()function
  cout << "The norm of " << complexnumber << " is ";
  cout << norm(complexnumber) << endl;
   
  return 0;
}

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Output:

The norm of (4,3) is 25

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