tanh() function in C++ STL

The tanh() is an inbuilt function in C++ STL which returns the hyperbolic tangent of an angle given in radians.

Syntax :

tanh(data_type x)

Parameter :The function accepts one mandatory parameter x which specifies the hyperbolic angle in radian. The parameter can be of double, float or long double datatype.

Return Value:The function returns the hyperbolic tangent of the argument.

Below programs illustrate the above method:

Program 1:

filter_none

edit
close

play_arrow

link
brightness_4
code

// CPP program to demonstrate the
// tanh() function
#include <bits/stdc++.h>
using namespace std;
  
int main()
{
    double x = 4.1, result;
  
    result = tanh(x);
    cout << "tanh(4.1) = " << result << endl;
  
    // x in Degrees
    double xDegrees = 90;
    x = xDegrees * 3.14159 / 180;
  
    result = tanh(x);
    cout << "tanh(90 degrees) = " << result << endl;
  
    return 0;
}

chevron_right


Output:

tanh(4.1) = 0.999451
tanh(90 degrees) = 0.917152

Program 2:

filter_none

edit
close

play_arrow

link
brightness_4
code

// CPP program to demonstrate the
// tanh() function
#include <bits/stdc++.h>
using namespace std;
  
int main()
{
    int x = -4;
    double result;
  
    result = tanh(x);
    cout << "tanh(-4) = " << result << endl;
  
    // x in Degrees
    double xDegrees = 90;
    x = xDegrees * 3.14159 / 180;
  
    result = tanh(x);
    cout << "tanh(90 degrees) = " << result << endl;
  
    return 0;
}

chevron_right


Output:

tanh(-4) = -0.999329
tanh(90 degrees) = 0.761594

Errors and Exceptions: The function returns no matching function for call to error when a string or character is passed as an argument.

Program 3:

filter_none

edit
close

play_arrow

link
brightness_4
code

// CPP program to demonstrate the tanh()
// function when a string is passed as argument 
#include <bits/stdc++.h>
using namespace std;
  
int main()
{
    string x = "gfg";
    double result;
  
    result = tanh(x);
    cout << "tanh(x) = " << result << endl;
  
    return 0;
}

chevron_right


Output:

prog.cpp:14:20: error: no matching function for call to 'tanh(std::__cxx11::string&)'
result = tanh(x);


My Personal Notes arrow_drop_up

pawanasipugmailcom

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.




Article Tags :
Practice Tags :


Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.