The area hyperbolic tangent is the inverse operation of the hyperbolic tangent.
/* atanh example */
#include <stdio.h>/* printf */
#include <math.h>/* tanh, atanh */
int main ()
{
double param, result;
param = tanh(1);
result = atanh(param) ;
printf ("The area hyperbolic tangent of %f is %f.n", param, result);
return 0;
}پارامتر های ورودی
- x
- Value whose area hyperbolic tangent is computed, in the interval
[-1,+1].
If the argument is out of this interval, a domain error occurs.
For values of-1and+1, a pole error may occur.
مقدار خروجی
Area hyperbolic tangent of x.
If a domain error occurs:
– And math_errhandling has MATH_ERRNO set: the global variable errno is set to EDOM.
– And math_errhandling has MATH_ERREXCEPT set: FE_INVALID is raised.
If a pole error occurs:
– And math_errhandling has MATH_ERRNO set: the global variable errno is set to ERANGE.
– And math_errhandling has MATH_ERREXCEPT set: FE_DIVBYZERO is raised.
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