valarray log10() function in C++
Last Updated : 06 Feb, 2023
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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:-
// 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:-
// 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)
