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valarray log10() function in C++

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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)



Last Updated : 06 Feb, 2023
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