Re: What is wrong with Bugzilla? [Was: Re: GCC and Floating-Point]

[Toon Moene <toon at moene dot indiv dot nluug dot nl>]

Vincent Lefevre wrote:

> On 2005-05-29 18:19:19 +0300, Michael Veksler wrote:
>
> > If more than 50 people report it, independently, as a bug then it
> > sure is a bug. You might argue whether technically it is a bug, but
> > from user's perspective it is a bug (and you have over 50 duplicates
> > as an evidence). As such it has to be dealt with more positively.

> Concerning the extended precision, there are two problems.
>
> First there is a bug in GCC concerning casts and assignments
> (see ISO/IEC 9899: 5.1.2.3#13, 6.3.1.5#2 and 6.3.1.8#2).
>
> But even this were fixed, many users would still complain.
> That's why I think that the Linux kernel should set the CPU
> in double-precision mode, like some other OS's (MS Windows,
> *BSD) -- but this is off-topic here.

It's not off-topic.  In fact, Jim Wilson argued this point here:

http://gcc.gnu.org/ml/gcc/2003-08/msg01282.html

"The best pragmatic solution is probably to set the rounding control to 
64-bits, but then we lose access to long double which some people need, 
and we still have excess precision problems for float."

Hope this helps,

--
Toon Moene - e-mail: toon@moene.indiv.nluug.nl - phone: +31 346 214290
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