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Re: Possible Buglet in gfortran Release 143193 (and 4.3.1 and 4.3.2)

From: Tom Browder <tom dot browder at gmail dot com>
To: Jerry DeLisle <jvdelisle at verizon dot net>
Cc: Thomas Koenig <tkoenig at netcologne dot de>, Steve Kargl <sgk at troutmask dot apl dot washington dot edu>, fortran at gcc dot gnu dot org
Date: Sat, 24 Jan 2009 12:50:13 -0600
Subject: Re: Possible Buglet in gfortran Release 143193 (and 4.3.1 and 4.3.2)
References: <8bc817ee0901231615o7dc5e86cp33b4aa9ca1ed5d70@mail.gmail.com> <20090124012542.GA57389@troutmask.apl.washington.edu> <8bc817ee0901231802s4a55b7fdie55bf9f45c9844d0@mail.gmail.com> <20090124021334.GA57843@troutmask.apl.washington.edu> <8bc817ee0901231818q11186een17ee71454f03c63a@mail.gmail.com> <20090124024206.GA58120@troutmask.apl.washington.edu> <8bc817ee0901240716m1846b732n98f77d7cff05e356@mail.gmail.com> <1232816895.2910.8.camel@meiner.onlinehome.de> <8bc817ee0901240929o2899ad1cm47b4609e58ec6cbd@mail.gmail.com> <497B5982.30902@verizon.net>

On Sat, Jan 24, 2009 at 12:10 PM, Jerry DeLisle <jvdelisle@verizon.net> wrote:
> Tom Browder wrote:
...
>> Right now I'm testing some functions I had to write to replace the
>> pgf77 trig functions accepting arguments in degrees or returning
>> degrees instead of radians.
>>
>> I'm getting the same answers to 6 decimal places for real*4 and 15
>> decimal places for real*8.  Does that sound about right?
...
> Yes, that sounds about right. Short of a blunder bug, you can rely pretty
> well on gfortran precision.  Discrepancies are usually related to
> computational sensitivity to round-off.

Thanks, Jerry, this is a good place to close this thread.

-Tom

References:
- Possible Buglet in gfortran Release 143193 (and 4.3.1 and 4.3.2)
  - From: Tom Browder
- Re: Possible Buglet in gfortran Release 143193 (and 4.3.1 and 4.3.2)
  - From: Steve Kargl
- Re: Possible Buglet in gfortran Release 143193 (and 4.3.1 and 4.3.2)
  - From: Tom Browder
- Re: Possible Buglet in gfortran Release 143193 (and 4.3.1 and 4.3.2)
  - From: Steve Kargl
- Re: Possible Buglet in gfortran Release 143193 (and 4.3.1 and 4.3.2)
  - From: Tom Browder
- Re: Possible Buglet in gfortran Release 143193 (and 4.3.1 and 4.3.2)
  - From: Steve Kargl
- Re: Possible Buglet in gfortran Release 143193 (and 4.3.1 and 4.3.2)
  - From: Tom Browder
- Re: Possible Buglet in gfortran Release 143193 (and 4.3.1 and 4.3.2)
  - From: Thomas Koenig
- Re: Possible Buglet in gfortran Release 143193 (and 4.3.1 and 4.3.2)
  - From: Tom Browder
- Re: Possible Buglet in gfortran Release 143193 (and 4.3.1 and 4.3.2)
  - From: Jerry DeLisle

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