Re: Discrete random with given distribution ?

[Wes Groleau <wesgroleau@despammed.com>]

> Yep, the quickest method may be to "discretize" the probabilities.
> And the elements and their probabilities must in my case be given
> during runtime so the approach above must be somehow generalised.

My first method must be determined before compile time
(Actually, there is a way to approximate it at run-time,
but it is a bit clumsy)

If the probabilities are to be determined at runtime,
my second method will work, if you

1. Fix the typo two other folks detected,

2. Write code to assign the the probabilities:

   Sum := 0.0

   for I in Threshold'Range loop

      Sum := Sum + Probability (I);
      Threshold (I) := Sum;

   end loop;

   if abs (Sum - 1.0) > Tolerance then
      raise Something_Is_Screwed_Up_Here;
   end if;

-- 
Wes Groleau
http://freepages.rootsweb.com/~wgroleau