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From: Robert A Duff <bobduff@shell01.TheWorld.com>
Newsgroups: comp.lang.ada
Subject: Re: Saturated Math
Date: 30 May 2003 10:23:52 -0400
Organization: The World Public Access UNIX, Brookline, MA
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Vinzent Hoefler <ada.rocks@jlfencey.com> writes:

> Robert A Duff wrote:
> >Slightly?!  Seems like a huge difference to me.
> 
> ACK. I like understatements. ;)

;-)

> Because its more intuitive for their problem domain. It would be in
> mine. I have a lot of color value conversions that should stop at
> black or white but I still need the grey values inbetween even after
> some of these pixels have saturated.

I still don't get it.  By "sticky", I mean that arithmetic is sticky.
You can still set the thing to any value you like.  In your example of
0..255, if X = 200, and you say "X := X + 100;", then X = 255.
If you then subtract 100 from X, you go "too far" in the other
direction, it seems to me.  So if you want to, say, set it back to 200,
you should say "X := 200;", not "X := X - 100;".

- Bob