tanh -- Calculate Hyperbolic Tangent

Format

#include <math.h>
double tanh(double x);

Language Level: ANSI, POSIX, XPG4
tanh calculates the hyperbolic tangent of x, where x is expressed in radians.

Return Value
tanh returns the value of the hyperbolic tangent of x. The result of tanh cannot have a range error.

Example
This example computes x as the hyperbolic tangent of pi/4.

#include <math.h>
#include <stdio.h>
int main(void)
{
   double pi, x;
   pi = 3.1415926;
   x = tanh(pi/4);
   printf("tanh( %lf ) = %lf\n", pi/4, x);
   return 0;
   /****************************************
      The output should be:
      tanh( 0.785398 ) = 0.655794
   ****************************************/
}


acos -- Calculate Arccosine
asin -- Calculate Arcsine
atan - atan2 -- Calculate Arctangent
cos -- Calculate Cosine
cosh -- Calculate Hyperbolic Cosine
_fpatan -- Calculate Arctangent
_fptan -- Calculate Tangent
sin -- Calculate Sine
sinh -- Calculate Hyperbolic Sine
tan -- Calculate Tangent
<math.h>