From: Douglas McIlroy <douglas.mcilroy@dartmouth.edu>
To: Noel Hunt <noel.hunt@gmail.com>
Cc: The Unix Heritage Society <tuhs@tuhs.org>
Subject: [TUHS] Re: C Btrees
Date: Sat, 24 Jun 2023 08:49:26 -0400 [thread overview]
Message-ID: <CAKH6PiWRWWiZuNbW44kCFTTjrJW0idYeVPr6oydrmGSvvOcwZw@mail.gmail.com> (raw)
In-Reply-To: <CAGfO01z1BtsG4o5bb_zfTPSf0Bgy=6eAwkGKHgr24rV=VMFzGA@mail.gmail.com>
I used Ideal to make most of the figures in "Getting raster ellipses
right", the first paper in CSTR #155. That paper grew out of a simple
request from Rob Pike for an ellipse-drawing primitive for the Blit.
Doug
On Fri, Jun 23, 2023 at 10:34 PM Noel Hunt <noel.hunt@gmail.com> wrote:
>
> There is a little known suite of programs, written by Peter Weinberger,
> found as 'btree', or 'cbt', in the archives for Eighth and Tenth
> Edition.
>
> The code in the Eighth Edition archive seems to be the earliest, and
> has fewer utilities than available in the Tenth Edition code. A search
> through files shows that it was used by 'road', 'weather' and
> 'apnews'.
>
> There is an ms file, 'memo', describing the programs, amongst the code,
> but an appendix seems to be missing. If anyone knows about this or
> where it might be I'd like to get my hands on it.
>
> 'Memo' itself is interesting because it's the only troff document I've
> seen amongst the reseach papers (excluding Christopher Van Wyk's own
> paper of course) that uses 'ideal', in this case, for drawing a
> picture depicting B-tree structure.
next prev parent reply other threads:[~2023-06-24 12:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-24 2:33 [TUHS] " Noel Hunt
2023-06-24 12:49 ` Douglas McIlroy [this message]
2023-06-25 21:11 ` [TUHS] " Noel Hunt
2023-06-26 6:46 ` [TUHS] CSTRs [was Re: Re: C Btrees] arnold
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