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Atanh

Item Value Header filemath.h Declarationfloat atanhf(float arg);double atanh(double arg);long double atanhl(long double arg); Returnreturns the arc hyperbolic tangent of arg. ParameterThis argument must be in the range -1 to 1. #include <math.h>   #include <stdio.h>   int main(void)   {     printf("%f.\n",  atanh(12));     return 0;   } -1.#IND00.