C/math.h/tanh

tanh: returns the hyperbolic tangent of arg

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//Declaration: float tanhf(float arg);

              double tanh(double arg); 
              long double tanhl(long double arg);  

 #include <math.h>
 #include <stdio.h>
 int main(void)
 {
   double val = -1.0;
   do {
     printf("Hyperbolic tangent of %f is %f.\n", val, tanh(val));
     val += 0.1;
   } while(val<=1.0);
   return 0;
 }
        

/* Hyperbolic tangent of -1.000000 is -0.761594. Hyperbolic tangent of -0.900000 is -0.716298. Hyperbolic tangent of -0.800000 is -0.664037. Hyperbolic tangent of -0.700000 is -0.604368. Hyperbolic tangent of -0.600000 is -0.537050. Hyperbolic tangent of -0.500000 is -0.462117. Hyperbolic tangent of -0.400000 is -0.379949. Hyperbolic tangent of -0.300000 is -0.291313. Hyperbolic tangent of -0.200000 is -0.197375. Hyperbolic tangent of -0.100000 is -0.099668. Hyperbolic tangent of 0.000000 is 0.000000. Hyperbolic tangent of 0.100000 is 0.099668. Hyperbolic tangent of 0.200000 is 0.197375. Hyperbolic tangent of 0.300000 is 0.291313. Hyperbolic tangent of 0.400000 is 0.379949. Hyperbolic tangent of 0.500000 is 0.462117. Hyperbolic tangent of 0.600000 is 0.537050. Hyperbolic tangent of 0.700000 is 0.604368. Hyperbolic tangent of 0.800000 is 0.664037. Hyperbolic tangent of 0.900000 is 0.716298. Hyperbolic tangent of 1.000000 is 0.761594.

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