Rune wrote:
> 
> "John VanSickle" wrote:
> > If you don't know the function, how do you evaluate it at X?
> 
> I ask somebody to do it, then he tells me the result. Or rather, my
> code asks another part of my code to evaluate it at X the other part
> returns the result.
> 
> As you probably have guessed, the function is too complex to find the
> inverse of mathematically, so I have to use approximation. And I
> simply asked for a fast way to do that.

The only way that will be much faster is Newton's method, which
involves taking the first-order derivative of the function.  If that
is too complicated, then the divide-and-conquer approach is as fast as
you are going to get.

Regards,
John
-- 
ICQ: 46085459

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