valarray log10() function in C++

The log10() function is defined in valarray header file. This function is used to calculate common logarithm of the value of the elements in valarray. Syntax:

log10(varr);

Parameter: This function takes a mandatory parameter varr which represents valarray. Returns: This function returns a valarray containing the common logarithm of all the elements. Below programs illustrate the above function: Example 1:-

CPP

// C++ program to demonstrate
// example of log10() function.

#include <bits/stdc++.h>
using namespace std;

int main()
{

    // Initializing valarray
    valarray<double> varr = { 1, 2, 3, 4, 5 };

    // Declaring new valarray
    valarray<double> varr1;

    // use of log10() function
    varr1 = log10(varr);

    // Displaying new elements value
    cout << "The new valarray with"
        << " manipulated values is : "
        << endl;

    for (double& x : varr1) {
        cout << x << " ";
    }

    cout << endl;

    return 0;
}

Output:

The new valarray with manipulated values is : 
0 0.30103 0.477121 0.60206 0.69897

Time complexity: O(n)

Space Complexity: O(n)

Example 2:-

CPP

// C++ program to demonstrate
// example of log10() function.

#include <bits/stdc++.h>
using namespace std;
int main()
{

    // Initializing valarray
    valarray<double>
        varr = { -1, 6, 3, 45, 5 };

    // Declaring new valarray
    valarray<double> varr1;

    // use of log10() function
    varr1 = log10(varr);

    // Displaying new elements value
    cout << "The new valarray with"
        << " manipulated values is : "
        << endl;

    for (double& x : varr1) {
        cout << x << " ";
    }

    cout << endl;

    return 0;
}

Output:

The new valarray with manipulated values is : 
nan 0.778151 0.477121 1.65321 0.69897

Time complexity: O(n)

Space Complexity: O(n)