fmod c++

// CPP program to implement log() function 
#include <bits/stdc++.h> 
using namespace std; 
  
// function to evaluate natural logarithm base-e 
double valueE(double d) 
{ 
    return log(d); 
} 
  
// function to evaluate logarithm base-10 
double value10(double d) 
{ 
    return log10(d); 
} 
  
// driver program to test the above function 
int main() 
{ 
    double d = 10; 
    cout << "The logarithm value(base-e) of " << d  
         << " is " << valueE(d) << endl; 
    cout << "The logarithm value(base-10) of " << d  
         << " is " << value10(d) << endl; 
    return 0; 
}