Re: invalid parameter list

["Björn Persson" <spam-away@nowhere.nil>]

Dennis Lee Bieber wrote:
> 	For the example data (12000 .. 15000, and chain length of 30) I
> encounter an overflow error.

Isaac probably doesn't know yet what an overflow is.

What Dennis is saying is that on his computer, this line:

                Sum := Sum + C + N / C;

sometimes fails because the sum becomes too big. Assuming Dennis hasn't 
changed the type of Sum, this means that sometimes the addition results 
in a sum that is greater than the upper limit of Integer, whatever that 
limit is on Dennis' platform.

I can show you ways around this problem, but first you should fix your 
implementation of Sum_Of_Divisors and get your program through the 
compiler. Once your program produces correct results for short chains 
we'll see if the Constraint_Error turns out to be a problem and what we 
can do about it.

You had a version of Sum_Of_Divisors that was correct but a bit 
inefficient. Then you replaced it with a version that's more efficient 
but incorrect. You need to fix it so that it always returns the same 
result as the first version you posted.

-- 
Bj�rn Persson                              PGP key A88682FD
                    omb jor ers @sv ge.
                    r o.b n.p son eri nu