From: Jacob Sparre Andersen <sparre@nbi.dk>
Subject: Re: getting same output as gfortran, long_float
Date: Fri, 01 May 2015 09:47:53 +0200
Date: 2015-05-01T09:47:53+02:00 [thread overview]
Message-ID: <871tj020ye.fsf@adaheads.sparre-andersen.dk> (raw)
In-Reply-To: mhulhk$lsm$2@speranza.aioe.org
Nasser M. Abbasi wrote:
> Thanks, this is very useful. I noticed small difference in output:
> side-by-side:
>
> Ada: 0.00182898948331047096479195244627343392775491540..
> Mathematica*: 0.00182898948331047096479195244627343392775491540..
> gfortran: 0.00182898948331047112025871115292829927
>
> at digit 18, gfortran result is different. But your Ada rational
> package gives same result as Mathematica. This tells me your
> result is the accurate one !
The problem might be in how quad-double floating point operations work.
(But it could of course also be a plain oldfashioned bug in gfortran.)
Greetings,
Jacob
--
»If you're going to have crime,
it might as well be organized crime.« -- Lord Vetinari
next prev parent reply other threads:[~2015-05-01 7:47 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-30 21:17 getting same output as gfortran, long_float Nasser M. Abbasi
2015-04-30 22:08 ` Dmitry A. Kazakov
2015-04-30 22:11 ` Dmitry A. Kazakov
2015-04-30 22:37 ` Nasser M. Abbasi
2015-04-30 22:53 ` Nasser M. Abbasi
2015-05-01 7:22 ` Jacob Sparre Andersen
2015-05-01 1:12 ` Nasser M. Abbasi
2015-05-01 6:52 ` Dmitry A. Kazakov
2015-05-01 7:32 ` Nasser M. Abbasi
2015-05-01 7:45 ` Dmitry A. Kazakov
2015-05-04 0:15 ` robin.vowels
2015-05-04 7:21 ` Dmitry A. Kazakov
2015-05-04 8:53 ` robin.vowels
2015-05-04 10:18 ` Dmitry A. Kazakov
2015-05-04 13:45 ` robin.vowels
2015-05-04 14:47 ` Dmitry A. Kazakov
2015-05-07 2:01 ` robin.vowels
2015-05-01 23:24 ` Dennis Lee Bieber
2015-05-04 0:09 ` robin.vowels
2015-05-01 7:01 ` Dmitry A. Kazakov
2015-05-04 0:42 ` robin.vowels
2015-04-30 22:12 ` Jeffrey R. Carter
2015-04-30 22:27 ` Qun-Ying
2015-05-01 0:59 ` Dennis Lee Bieber
2015-04-30 22:32 ` Nasser M. Abbasi
2015-05-01 1:16 ` Jeffrey R. Carter
2015-05-01 1:40 ` Nasser M. Abbasi
2015-05-01 7:47 ` Jacob Sparre Andersen [this message]
2015-05-01 15:39 ` Waldek Hebisch
2015-05-01 17:27 ` Nasser M. Abbasi
2015-05-01 18:03 ` Nasser M. Abbasi
2015-05-04 0:51 ` robin.vowels
2015-05-04 0:47 ` robin.vowels
2015-05-01 8:21 ` Simon Wright
2015-05-01 11:55 ` Georg Bauhaus
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