MathArccosh

Returns the hyperbolic arccosine.

double  MathArccosh(
   double  value     // 1 <= value < ∞
   );

Parameters

value

[in] The value, the hyperbolic arccosine of which is to be calculated.

Return Value

The hyperbolic arccosine of the number. If value is less than +1, the function returns NaN (undefined value).

Note

Instead of the MathArccosh() function you can use the acosh() function.