C++ <complex> - atan() Function
The C++ <complex> atan() function returns the complex arc tangent of a complex number z. It is a function on complex plane, and has two branch cuts:
- Extends from 1j along the imaginary axis to ∞j, continuous from the right.
- Extends from -1j along the imaginary axis to -∞j, continuous from the left.
Mathematically, it can be expressed as:
Syntax
template<class T> complex<T> atan (const complex<T>& z);
Parameters
z |
Specify the complex number. |
Return Value
Returns the complex arc tangent of z.
Example:
The example below shows the usage of <complex> atan() function.
#include <iostream>
#include <complex>
using namespace std;
int main (){
complex<double> z1 (2, 2);
complex<double> z2 (2, 0);
complex<double> z3 (0, 2);
//calculate the complex arc tangent
cout<<"atan(z1): "<<atan(z1)<<"\n";
cout<<"atan(z2): "<<atan(z2)<<"\n";
cout<<"atan(z3): "<<atan(z3)<<"\n";
return 0;
}
The output of the above code will be:
atan(z1): (1.31122,0.238878) atan(z2): (1.10715,0) atan(z3): (1.5708,0.549306)
❮ C++ <complex> Library
