Re: [coLinux-users] Re: floating point problems (was: using 2.6 kernels, moving to latest coLinux snapshot, etc.)

[Nuno L. <lu...@nl...>]

Joe Wells, dando pulos de alegria, escreveu :
> sl...@bl... (Joe Wells (reverse mailbox letters to reply)) writes:
>>"gboutwel" <gbo...@pr...> writes:
>>>The only significant change
>>>between 0.6.1 and 0719 in regards to FP operations was that flop20
>>>didn't pass and now does.
>>
>>Where do I get flops20 so I can try it on my machine?  Is it available
>>as a Gentoo ebuild?  "emerge search flops" and "emerge search float"
>>do not reveal it.
> 
> Does anyone know where I get this floating point test suite?  It has
> been referred to as "fops20" and "flop20" in e-mail on this mailing
> list.

Dan Aloni gave me a link to it but I don't remember anymore. You should 
find it easily with google, but you can also get it at 
http://nlucas.homeip.net/colinux/test/flops20.zip (it is my home pc, so 
it is possible the net be down or something).

After some googling I found this last year forums about the pentium 4 
CFLAGS problems with floating point:

http://www.gentoo.org/news/en/gwn/20030401-newsletter.xml#doc_chap4

It seems one way of testing if you have a gentoo configuration that 
activates this gcc bugs is executing:

  # python -c 'int(10.1); int(10000.3); int(1.2)'

If it doesn't show nothing (no error) it is because your configuration 
is ok (or you have a mixed compiled environment, off course).

Regards,
~Nuno Lucas