From:	DavMac AT iname DOT com (Davin McCall)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: What is MID() macro ?
Date:	Fri, 01 Oct 1999 06:09:51 GMT
Organization:	Monash Uni
Lines:	28
Distribution:	world
Message-ID:	<37f44f86.8922282@newsserver.cc.monash.edu.au>
References:	<KoXyN35vg1q8HZF3EIU5c3sceTlu AT 4ax DOT com> <%jHI3.30026$ei1 DOT 52479 AT newsfeeds DOT bigpond DOT com>
NNTP-Posting-Host:	damcc5.halls.monash.edu.au
X-Trace:	towncrier.cc.monash.edu.au 938758185 12444 130.194.198.138 (1 Oct 1999 06:09:45 GMT)
X-Complaints-To:	abuse AT monash DOT edu DOT au
NNTP-Posting-Date:	1 Oct 1999 06:09:45 GMT
X-Newsreader:	Forte Free Agent 1.1/32.230
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

On Thu, 30 Sep 1999 11:36:33 +1000, "Johan Venter"
<jventer AT writeme DOT com> wrote:

>From allegro.h:
>
>#define MIN(x,y)     (((x) < (y)) ? (x) : (y))
>#define MAX(x,y)     (((x) > (y)) ? (x) : (y))
>#define MID(x,y,z)   MAX((x), MIN((y), (z)))
>
>From my understanding of that, it finds the middle number of the three passed to
>it.

Surely, if 'x' is the greatest value, this won't work.. eg:

MID(10,9,8) expands to:

  MAX(10, MIN(9,8))    which is equivalent to:

     MAX(10,8)  which is clearly 10.

Am I doing something wrong here?

Davin.


__________________________________________________________
       *** davmac - sharkin'!! davmac AT iname DOT com ***
my programming page: http://yoyo.cc.monash.edu.au/~davmac/

- Raw text -