Re: Precision of floating point multiply

Article View: comp.lang.fortran

Article #6546

#6546

From: Richard Maine
Date: Wed, 01 Oct 2003 00:21

27 lines
2301 bytes

Brian Inglis <Brian.Inglis@SystematicSw.ab.ca> writes:

> On 29 Sep 2003 18:59:14 GMT in alt.folklore.computers,
> nmm1@cus.cam.ac.uk (Nick Maclaren) wrote:
> 
> >In article <cevgnvkev8rmbb4q6qtmnp1mm6a26ee17n@4ax.com>,
> >Brian Inglis  <Brian.Inglis@SystematicSw.ab.ca> wrote:
> >>>
> >>>What if the number isn't normalized ? ___________________________Gerard S.
> >>
> >>IBM FP does not support denormals. 
> >
> >So?  It most definitely supports unnormalised numbers, which are very
> >different from IEEE denormals, but may be introduced into IEEE 754R
> >(for decimal only).
> 
> I ass-u-me-d the poster was asking from an IEEE viewpoint, where
> denormals are the only unnormalized form;

Oh.  Well, the context was IBM mainframe instructions, which don't
fit that assumption.  At least that's what I thought the context was
unless I got lost.

-- 
Richard Maine
email: my last name at domain
domain: isomedia dot com

Technical Details

Message-ID: <m2d6dhyfhf.fsf@vega.dsl.att.net>

Path:

arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!sn-xit-03!sn-xit-01!sn-post-01!supernews.com!news.supernews.com!not-for-mail

References:

<dG4db.598668$uu5.97984@sccrnsc04> <uefziffu7c.fsf@altair.dfrc.nasa.gov> <vngokjk8nourca@corp.supernews.com> <cevgnvkev8rmbb4q6qtmnp1mm6a26ee17n@4ax.com> <bl9ve2$k3e$1@pegasus.csx.cam.ac.uk> <ml8inv8u7qcck78vkr0joa2jq6itq4bnrl@4ax.com>

Show Full Headers

Complete Article Headers

X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: fd4af,7830916812112af0
X-Google-Attributes: gidfd4af,public
X-Google-Thread: fd705,7830916812112af0
X-Google-Attributes: gidfd705,public
X-Google-Thread: 102b75,7830916812112af0
X-Google-Attributes: gid102b75,public
X-Google-Thread: 1094ba,7830916812112af0
X-Google-Attributes: gid1094ba,public
X-Google-ArrivalTime: 2003-09-30 17:21:50 PST
Path: arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!sn-xit-03!sn-xit-01!sn-post-01!supernews.com!news.supernews.com!not-for-mail
From: Richard Maine <nospam@see.signature>
Newsgroups: comp.lang.fortran,comp.arch,bit.listserv.ibm-main,alt.folklore.computers
Subject: Re: Precision of floating point multiply
Date: 30 Sep 2003 17:21:48 -0700
Organization: NASA Dryden
Message-ID: <m2d6dhyfhf.fsf@vega.dsl.att.net>
Sender: maine@vega.dsl.att.net
References: <dG4db.598668$uu5.97984@sccrnsc04> <uefziffu7c.fsf@altair.dfrc.nasa.gov> <vngokjk8nourca@corp.supernews.com> <cevgnvkev8rmbb4q6qtmnp1mm6a26ee17n@4ax.com> <bl9ve2$k3e$1@pegasus.csx.cam.ac.uk> <ml8inv8u7qcck78vkr0joa2jq6itq4bnrl@4ax.com>
User-Agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.4 (Portable Code)
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Complaints-To: abuse@supernews.com
Lines: 27

Reply to Parent Message