Syntax

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

tanh calculates the hyperbolic tangent of x, where x is expressed in radians.

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

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

#include <math.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

   ****************************************************************************/
}

• atan - atan2
  
• cosh
  
• sinh
  
• tan

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