In this C++ tutorial, you will learn how to find the hyperbolic tangent of an angle using floor() function of cmath, with syntax and examples.
C++ tanh()
C++ tanh() returns hyperbolic tangent of angle given in radians.
Syntax
The syntax of C++ tanh() is
tanh(x)
where
| Parameter | Description |
|---|---|
| x | A double, float, or long double value representing angle in radians. |
Returns
The return value depends on the type of value passed for parameter x.
The return value of tanh(x) is
- double if x is double.
- float if x is float.
- long double if x is long double.
The synopsis of tanh() function is
double tanh(double x); float tanh(float x); long double tanh(long double x); double tanh(T x); // For integral type
tanh() is a function of cmath library. Include cmath library in the program, if using tanh() function.
Example
In this example, we read the value of angle from user into variable x, and find the hyperbolic tangent value of x using tanh() function.
C++ Program
#include <iostream>
#include<cmath>
using namespace std;
int main() {
double x;
cout << "Enter angle (radians) : ";
cin >> x;
double result = sinh(x);
cout << "tanh(" << x << ") : " << result << endl;
} Output
Enter angle (radians) : 5 tanh(5) : 74.2032 Program ended with exit code: 0
Enter angle (radians) : 0 tanh(0) : 0 Program ended with exit code: 0
Enter angle (radians) : -2 tanh(-2) : -3.62686 Program ended with exit code: 0
Conclusion
In this C++ Tutorial, we learned the syntax of C++ tanh(), and how to use this function to find the hyperbolic tangent of given angle, with the help of examples.