Re: Floating Point Test Suite

From	Fabian Russell <root@localhost.localdomain>
Newsgroups	sci.physics, comp.os.linux.advocacy
Subject	Re: Floating Point Test Suite
Date	2015-11-12 06:24 +0000
Organization	NewsGuy - Unlimited Usenet $23.95
Message-ID	<pan.2015.11.12.06.24.02@localhost.localdomain> (permalink)
References	<pan.2015.11.11.18.01.38@localhost.localdomain> <pan.2015.11.11.19.58.41@localhost.localdomain> <WJ-dnVQVTK3yldnLnZ2dnUU7-fOdnZ2d@giganews.com>

Cross-posted to 2 groups.

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On Wed, 11 Nov 2015 21:33:03 -0600, Monkey Man wrote:

> 
> I've included the results in this post if you care to have a look. I'd be 
> happy to learn about what this is telling me if you wouldn't mind 
> breaking it down a bit for me.
> 

Hello M.M.,

Well, I find something interesting with your results.  At first, I didn't
expect anything wrong.  The PARANOIA error was unusual but, not knowing
the exact nature of the error, I didn't consider it too serious.

But on closer inspection I found something that I never saw before
or expected.  It is here:

> 
> 
> 1. One-shot test of multiplication & division: failed for A = 1717.000000.
> 

You have a one-shot test failure for a particular value.  This indicates
that rounding is not being performed correctly according to IEEE754.
On a modern Linux system this would be very strange.

It COULD be related to the PARANOIA failure/defect, but I don't know.

Please post the files cdiv_DP.output, cmul_DP.output, and cpar_DP.output.
I would appreciate it.

If you want, you could delete all files in ucbtest-results and run
the test again to see if the same thing happens.

Thanks.

Thread

Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-11 18:01 +0000
  Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-11 18:09 +0000
  Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-11 19:58 +0000
    Re: Floating Point Test Suite Chris Ahlstrom <OFeem1987@teleworm.us> - 2015-11-11 15:19 -0500
      Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-11 20:28 +0000
      Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-11 20:37 +0000
        Re: Floating Point Test Suite Chris Ahlstrom <OFeem1987@teleworm.us> - 2015-11-11 16:33 -0500
      Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-11 21:13 +0000
        Re: Floating Point Test Suite Odd Bodkin <bodkinodd@gmail.com> - 2015-11-11 15:16 -0600
          Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-11 21:42 +0000
          Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-11 21:54 +0000
            Re: Floating Point Test Suite Odd Bodkin <bodkinodd@gmail.com> - 2015-11-11 16:43 -0600
              Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-11 23:15 +0000
                Re: Floating Point Test Suite Odd Bodkin <bodkinodd@gmail.com> - 2015-11-11 17:34 -0600
                Re: Floating Point Test Suite Odd Bodkin <bodkinodd@gmail.com> - 2015-11-11 17:37 -0600
                Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-11 23:47 +0000
                Re: Floating Point Test Suite dvus <dven1@adelphia.net> - 2015-11-12 07:56 -0500
                Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-12 19:07 +0000
                Re: Floating Point Test Suite Odd Bodkin <bodkinodd@gmail.com> - 2015-11-12 19:57 -0600
                Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-12 00:45 +0000
                Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-12 04:55 +0000
                Re: Floating Point Test Suite Odd Bodkin <bodkinodd@gmail.com> - 2015-11-12 09:26 -0600
                Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-12 20:56 +0000
                Re: Floating Point Test Suite Odd Bodkin <bodkinodd@gmail.com> - 2015-11-12 20:00 -0600
            Re: Floating Point Test Suite Odd Bodkin <bodkinodd@gmail.com> - 2015-11-11 16:48 -0600
              Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-11 23:08 +0000
                Re: Floating Point Test Suite Odd Bodkin <bodkinodd@gmail.com> - 2015-11-11 17:12 -0600
            Re: Floating Point Test Suite Odd Bodkin <bodkinodd@gmail.com> - 2015-11-11 17:06 -0600
            Re: Floating Point Test Suite dvus <dven1@adelphia.net> - 2015-11-12 07:35 -0500
              Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-12 19:29 +0000
    Re: Floating Point Test Suite Monkey Man <manm0nk3y@gmail.com> - 2015-11-11 21:33 -0600
      Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-12 04:47 +0000
        Re: Floating Point Test Suite Monkey Man <manm0nk3y@gmail.com> - 2015-11-12 20:19 -0600
          Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-13 03:28 +0000
            Re: Floating Point Test Suite Big Fish in a Small Crotch <bigfishinasmallcrotch@myself.com> - 2015-11-12 22:40 -0500
              Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-13 03:59 +0000
                Re: Floating Point Test Suite benj <none@gmail.com> - 2015-11-13 00:16 -0500
                Re: Floating Point Test Suite GreyCloud <cumulus@mist.com> - 2015-11-13 15:00 -0700
            Re: Floating Point Test Suite Monkey Man <manm0nk3y@gmail.com> - 2015-11-13 01:40 -0600
              Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-13 08:22 +0000
                Re: Floating Point Test Suite benj <none@gmail.com> - 2015-11-13 12:41 -0500
                Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-13 19:16 +0000
                Re: Floating Point Test Suite Apollyon <adravirgo@gmail.com> - 2015-11-13 13:04 -0800
              Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-14 22:58 +0000
                Re: Floating Point Test Suite Big Fish in a Small Crotch <bigfishinasmallcrotch@myself.com> - 2015-11-14 18:08 -0500
                Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-14 23:39 +0000
                Re: Floating Point Test Suite Timo <timo@physics.uq.edu.au> - 2015-11-14 18:26 -0800
                Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-15 07:07 +0000
                Re: Floating Point Test Suite Timo <timo@physics.uq.edu.au> - 2015-11-14 23:42 -0800
                Re: Floating Point Test Suite Poutnik <poutnik4nntp@gmail.com> - 2015-11-15 09:49 +0100
                Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-15 21:01 +0000
                Re: Floating Point Test Suite jimp@specsol.spam.sux.com - 2015-11-15 21:33 +0000
                Re: Floating Point Test Suite Timo <timo@physics.uq.edu.au> - 2015-11-15 14:24 -0800
                Re: Floating Point Test Suite jimp@specsol.spam.sux.com - 2015-11-15 22:55 +0000
                Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-15 22:25 +0000
                Re: Floating Point Test Suite Timo <timo@physics.uq.edu.au> - 2015-11-15 14:59 -0800
                Re: Floating Point Test Suite Poutnik <poutnik4nntp@gmail.com> - 2015-11-15 09:41 +0100
      Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-12 06:24 +0000
        Re: Floating Point Test Suite Monkey Man <manm0nk3y@gmail.com> - 2015-11-12 20:29 -0600
          Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-13 03:49 +0000
            Re: Floating Point Test Suite Monkey Man <manm0nk3y@gmail.com> - 2015-11-12 22:49 -0600
              Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-13 04:59 +0000
                Re: Floating Point Test Suite Monkey Man <manm0nk3y@gmail.com> - 2015-11-13 01:56 -0600
                Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-13 08:28 +0000
                Re: Floating Point Test Suite Monkey Man <manm0nk3y@gmail.com> - 2015-11-13 22:24 -0600
                Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-14 04:45 +0000
          Re: June 1986 ? ! Fabian Russell <root@localhost.localdomain> - 2015-11-13 06:19 +0000
            Re: June 1986 ? ! GreyCloud <cumulus@mist.com> - 2015-11-13 15:03 -0700
      Re: MonkeyMan is FabianRussell. Fabian Russell <root@localhost.localdomain> - 2015-11-12 19:44 +0000
    Re: Floating Point Test Suite Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2015-11-13 01:59 -0500
      Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-13 07:43 +0000
        Re: Floating Point Test Suite Timo <timo@physics.uq.edu.au> - 2015-11-13 15:11 -0800
          Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-14 00:00 +0000
            Re: Floating Point Test Suite Timo <timo@physics.uq.edu.au> - 2015-11-13 16:31 -0800
              Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-14 02:26 +0000
                Re: Floating Point Test Suite jimp@specsol.spam.sux.com - 2015-11-14 03:52 +0000
              Re: Floating Point Test Suite Fabian Russell <root@localhost.localdomain> - 2015-11-14 02:46 +0000
                Re: Floating Point Test Suite Timo <timo@physics.uq.edu.au> - 2015-11-13 19:26 -0800
                Re: Floating Point Test Suite benj <none@gmail.com> - 2015-11-14 02:11 -0500
              Re: Floating Point Test Suite noTthaTguY <abu.kuanysh05@gmail.com> - 2015-11-14 15:20 -0800
            Re: Floating Point Test Suite jimp@specsol.spam.sux.com - 2015-11-14 00:47 +0000
  Re: Floating Point Test Suite Big Fish in a Small Crotch <bigfishinasmallcrotch@myself.com> - 2015-11-11 15:28 -0500

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