<cmath>
double tanh ( double x );
float tanh ( float x );
long double tanh ( long double x );
Compute hyperbolic tangent
Returns the hyperbolic tangent of x.
In C++, this function is overloaded in <complex> and <valarray> (see complex tanh and valarray tanh).
Parameters
- x
- Floating point value.
Return Value
Hyperbolic tangent of x.
Portability
In C, only the double version of this function exists with this name.
Example
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/* tanh example */
#include <stdio.h>
#include <math.h>
int main ()
{
double param, result;
param = log(2.0);
result = tanh (param);
printf ("The hyperbolic tangent of %lf is %lf.\n", param, result );
return 0;
}
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Output:
The hyperbolic tangent of 0.693147 is 0.600000.
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See also
| sinh | Compute hyperbolic sine (function) |
| cosh | Compute hyperbolic cosine (function) |
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