log10() function for complex number in C++

In this article we will be discussing the working, syntax and examples of log10() function in C++ STL.

What is log10() function?

log10() function is an inbuilt function in C++ STL, which is defined in <complex> header file. log10() is used to find the common logarithmic value of a complex number. This function returns the common complex log value with base 10 of a complex number num.

Syntax

template<class T> complex<T> log10(const complex<T>& num);

Parameters

This function accepts one parameter num, which is a complex value whose log we have to find.

Return value

The common complex log value of num we want to calculate.

Example

Input: complex<double> C_number(-4.0, -1.0);
   Log10(C_number);
Output: log10 of (-4,-1) is (0.615224,-1.25798)

Example

 Live Demo

#include <bits/stdc++.h>
using namespace std;
int main() {
   complex<double> C_number(-4.0, -1.0);
   cout<<"log10 of "<< C_number<< " is "<<log10(C_number);
   return 0;
}

Output

If we run the above code it will generate the following output −

log10 of (-4,-1) is (0.615224,-1.25798)

Example

 Live Demo

#include <bits/stdc++.h>
using namespace std;
int main() {
   complex<double> C_number(-4.0, 1.0);
   cout<<"log10 of "<< C_number<< " is "<<log10(C_number);
   return 0;
}

Output

If we run the above code it will generate the following output −

log10 of (-4,1) is (0.615224,1.25798)