C++ <complex> - acos() Function
The C++ <complex> acos() function returns the complex arc cosine of a complex number z. It is a function on complex plane, and has two branch cuts:
- Extends right from 1 along the real axis to ∞, continuous from below.
- Extends left from -1 along the real axis to -∞, continuous from above.
Mathematically, it can be expressed as:
For any z, acos(z) = 𝜋 - acos(-z)
Syntax
template<class T> complex<T> acos (const complex<T>& z);
Parameters
z |
Specify the complex number. |
Return Value
Returns the complex arc cosine of z.
Example:
The example below shows the usage of <complex> acos() 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 cosine
cout<<"acos(z1): "<<acos(z1)<<"\n";
cout<<"acos(z2): "<<acos(z2)<<"\n";
cout<<"acos(z3): "<<acos(z3)<<"\n";
return 0;
}
The output of the above code will be:
acos(z1): (0.816547,-1.73432) acos(z2): (0,-1.31696) acos(z3): (1.5708,-1.44364)
❮ C++ <complex> Library
