valarray tanh() function in C++
Last Updated :
24 Oct, 2018
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The tanh() function is defined in valarray header file. This function is used to calculate hyperbolic tangent of the value of each element in valarray and returns a valarray containing the hyperbolic tangent of all the elements.
Syntax:
CPP
CPP
tanh(varr);Parameter: This function takes a mandatory parameter varr which represents valarray. Returns: This function returns a valarray containing the hyperbolic tangent of all the elements. Below programs illustrate the above function: Example 1:-
// C++ program to demonstrate
// example of tanh() function.
#include <bits/stdc++.h>
using namespace std;
int main()
{
// Initializing valarray
valarray<double>
varr = { 0, 0.25, 0.5, 0.75, 1 };
// Declaring new valarray
valarray<double> varr1;
// use of tanh() function
varr1 = tanh(varr);
// Displaying new elements value
cout << "The new valarray with"
<< " manipulated values is : "
<< endl;
for (double& x : varr1) {
cout << x << " ";
}
cout << endl;
return 0;
}
// C++ program to demonstrate// example of tanh() function.using namespace std;int main(){ // Initializing valarray valarray<double> varr = { 0, 0.25, 0.5, 0.75, 1 }; // Declaring new valarray valarray<double> varr1; // use of tanh() function varr1 = tanh(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:
Example 2:-
The new valarray with manipulated values is : 0 0.244919 0.462117 0.635149 0.761594
// C++ program to demonstrate
// example of tanh() function.
#include <bits/stdc++.h>
using namespace std;
int main()
{
// Initializing valarray
valarray<double>
varr = { 0.2, 0.14, 1.0, 0.0 };
// Declaring new valarray
valarray<double> varr1;
// use of tanh() function
varr1 = tanh(varr);
// Displaying new elements value
cout << "The new valarray with"
<< " manipulated values is : "
<< endl;
for (double& x : varr1) {
cout << x << " ";
}
cout << endl;
return 0;
}
// C++ program to demonstrate// example of tanh() function.using namespace std;int main(){ // Initializing valarray valarray<double> varr = { 0.2, 0.14, 1.0, 0.0 }; // Declaring new valarray valarray<double> varr1; // use of tanh() function varr1 = tanh(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 : 0.197375 0.139092 0.761594 0
