C Tutorial/math.h/atanh

atanh

Item Value Header file math.h Declaration float atanhf(float arg);double atanh(double arg);long double atanhl(long double arg); Return returns the arc hyperbolic tangent of arg. Parameter This argument must be in the range -1 to 1.

<source lang="cpp">#include <math.h>

 #include <stdio.h>
 int main(void)
 {
   printf("%f.\n",  atanh(12));
   return 0;
 }</source>