cmp(A,B)
swapif(A>B)
cmp(B,C)
swapif(B>C)
cmp(A,B)
swapif(A>B)

B is middle value

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu]On Behalf Of
Mark Rages
Sent: Friday, July 15, 2005 8:24 PM
To: Microcontroller discussion list - Public.
Subject: Re: [PIC] Design Challenge: Find center of three values

On 7/15/05, Mark Rages <markrages@gmail.com> wrote:
> I'll post my solution in a minute, once I'm satisfied it works.

Well, I think it's working and it's quitting time, so here goes:

I started by listing all the possibilities:

A > B > C choose B
A > C > B choose C
B > A > C choose A
B > C > A choose C
C > A > B choose A
C > B > A choose B

I notice that there are really only three comparisons, if we ingnore
equality.  (After all, if A=B, it doesn't matter which I choose.)

<snip>


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