From: Nick Maclaren <nmm1@cus.cam.ac.uk>
To: gcc-help@gcc.gnu.org
Subject: Re: where to discuss problems with IEEE 754 standard on x86 architecture?
Date: Tue, 22 May 2007 20:25:00 -0000 [thread overview]
Message-ID: <E1HqacT-0007FH-FW@virgo.cus.cam.ac.uk> (raw)
Petr Savicky <savicky@cs.cas.cz> wrote:
>
> Can anybody help me to find the right place to discuss the problems
> related to IEEE 754 standard for floating point numbers on x86 (IA-32)?
Well, I could, but they wouldn't be terribly pleased. Your error is
to assume that IEEE 754 applies to composite operations, whereas it
actually applies to each basic one in turn. To see what is going on,
you should print out the balues in binary, octal or hexadecimal, for
each sub-operation.
As far as I can see, gcc is doing nothing wrong.
Regards,
Nick Maclaren,
University of Cambridge Computing Service,
New Museums Site, Pembroke Street, Cambridge CB2 3QH, England.
Email: nmm1@cam.ac.uk
Tel.: +44 1223 334761 Fax: +44 1223 334679
next reply other threads:[~2007-05-22 20:06 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-22 20:25 Nick Maclaren [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-05-22 20:41 Nick Maclaren
2007-05-23 7:44 ` Petr Savicky
2007-05-23 8:17 ` Nick Maclaren
2007-05-23 8:46 ` Brian Dessent
2007-05-23 13:30 ` Tim Prince
2007-05-23 17:23 ` Petr Savicky
2007-05-22 20:05 Petr Savicky
2007-05-22 20:06 ` John (Eljay) Love-Jensen
2007-05-23 12:54 ` Andrew Haley
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