Subject: Re: accuracy of "long double"
To: Krister Walfridsson <email@example.com>
From: Vincent <firstname.lastname@example.org>
Date: 08/28/2007 13:36:54
Krister Walfridsson a écrit :
> honor TARGET_96_ROUND_53_LONG_DOUBLE while optimizing (and a couple of
> the failures are due to incorrect test cases that assume that "everything
> work as Linux"...)
> I plan to fix this before gcc 4.3 is released...
Well, since I am currently writing some mathematical stuff, can someone
be more specific about this issue? I mean:
* Does it mean that "double" precision roundoff is correct on BSD,
whereas "long double" is not — and vice-versa on Linux?
* What shall be done (in the user code) in order to ensure that results
computed on NetBSD and Linux are consistent (regardless of GCC initial