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From: "frikk" <frikker@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Unsigned Integer Restraint Errors
Date: 14 Mar 2007 07:06:56 -0700
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Date: 2007-03-14T07:06:56-07:00
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On Mar 13, 12:42 pm, "Adam Beneschan" <a...@irvine.com> wrote:
> On Mar 13, 9:41 am, "Adam Beneschan" <a...@irvine.com> wrote:
>
> > On Mar 13, 9:04 am, "Adam Beneschan" <a...@irvine.com> wrote:
>
> > > By the way, if I were going to write a loop that goes from 2 to
> > > sqrt(n)/2 + 1, I wouldn't use Sqrt like this:
>
> > >     for I in 2 .. Integer(Float'Floor(Sqrt(Float(N))/2.0)) + 1 loop...
>
> > > but rather, I'd just write it something like this:
>
> > >     I := 2;
> > >     while (2 * I - 1) * (2 * I - 1) <= N loop -- I think I got this
> > > right
>
> > No, I didn't.  Jeff did.  I must have read (sqrt(n)+1)/2 or
> > something.  Oops.
>
> Ooops again---I meant Dmitry, not Jeff.  Wow, I'm off to a really good
> start today.
>
>                              -- Adam

It seems we're all a little bit fuzzy - I actually mean sqrt(n)+1 ...
why I put sqrt(n)/2+1 is beyond me.

Thank you for the great information everyone.  I like the idea of
doing the integer arithmetic better than the square root anyway.

I ended up doing this:

I = 2;
while (I)*(I) <= N loop
 ... I = I+1;

Thanks!
Blaine