Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uflorida!haven!uvaarpa!babbage!gnf3e
From: gnf3e@babbage.acc.virginia.edu (Greg Fife)
Newsgroups: comp.os.minix
Subject: Re: A simple question
Message-ID: <561@babbage.acc.virginia.edu>
Date: 30 Mar 89 14:20:44 GMT
References: <11762@louie.udel.EDU> <405@helios.prosys.se>
Reply-To: gnf3e@babbage.acc.Virginia.EDU (Greg Fife)
Organization: University of Va., Charlottesville, VA
Lines: 16

In article <405@helios.prosys.se> ath@helios.prosys.se (Anders Thulin) writes:
. . .
>(rp - proc) produces the index of rp inside the table proc, that
>is rp == proc[rp-proc].

I think you want rp == &(proc[rp-proc]).  Rp and proc are pointers,
and the construction pointer[index] is the type of what the pointer 
points to (or, as the Pascal programmer would say, it's the element at
that index in an array)

                                       
______________________________________________________________________

Greg Fife                            "A king is but a foolish
(804) 924-7743                        laborer/ who wastes his blood
gnf3e@virgnia.edu                     to be another's dream."