Article View: comp.lang.fortran
Article #6529Re: Precision of floating point multiply
From: Brian Inglis
Date: Tue, 30 Sep 2003 06:33
Date: Tue, 30 Sep 2003 06:33
24 lines
2561 bytes
2561 bytes
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; I also ass-u-me-d, as
you pointed out in another reply, it's pretty obvious there's not
really anything special about possibly losing bits if you operate
on unnormalized numbers.
Thanks. Take care, Brian Inglis Calgary, Alberta, Canada
--
Brian.Inglis@CSi.com (Brian dot Inglis at SystematicSw dot ab dot ca)
fake address use address above to reply
Technical Details
Message-ID:
<ml8inv8u7qcck78vkr0joa2jq6itq4bnrl@4ax.com>Path:
arc1-ca.pugleaf.net!news2.google.com!newsfeed.stanford.edu!nntp.cs.ubc.ca!cyclone.bc.net!sjc70.webusenet.com!news.webusenet.com!pd2nf1so.cg.shawcable.net!residential.shaw.ca!pd7tw3no.POSTED!53ab2750!not-for-mailReferences:
<dG4db.598668$uu5.97984@sccrnsc04> <uefziffu7c.fsf@altair.dfrc.nasa.gov> <vngokjk8nourca@corp.supernews.com> <cevgnvkev8rmbb4q6qtmnp1mm6a26ee17n@4ax.com> <bl9ve2$k3e$1@pegasus.csx.cam.ac.uk>Show Full Headers
Complete Article Headers
X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fd4af,7830916812112af0 X-Google-Attributes: gidfd4af,public X-Google-Thread: fd705,7830916812112af0 X-Google-Attributes: gidfd705,public X-Google-Thread: 1094ba,7830916812112af0 X-Google-Attributes: gid1094ba,public X-Google-Thread: 102b75,7830916812112af0 X-Google-Attributes: gid102b75,public X-Google-ArrivalTime: 2003-09-29 23:33:15 PST Path: arc1-ca.pugleaf.net!news2.google.com!newsfeed.stanford.edu!nntp.cs.ubc.ca!cyclone.bc.net!sjc70.webusenet.com!news.webusenet.com!pd2nf1so.cg.shawcable.net!residential.shaw.ca!pd7tw3no.POSTED!53ab2750!not-for-mail X-Trace-PostClient-IP: 68.147.131.211 From: Brian Inglis <Brian.Inglis@SystematicSw.ab.ca> Newsgroups: comp.lang.fortran,comp.arch,bit.listserv.ibm-main,alt.folklore.computers Subject: Re: Precision of floating point multiply Organization: Systematic Software Reply-To: Brian.Inglis@SystematicSw.ab.ca Message-ID: <ml8inv8u7qcck78vkr0joa2jq6itq4bnrl@4ax.com> References: <dG4db.598668$uu5.97984@sccrnsc04> <uefziffu7c.fsf@altair.dfrc.nasa.gov> <vngokjk8nourca@corp.supernews.com> <cevgnvkev8rmbb4q6qtmnp1mm6a26ee17n@4ax.com> <bl9ve2$k3e$1@pegasus.csx.cam.ac.uk> X-Newsreader: Forte Agent 1.93/32.576 English (American) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 24 Date: Tue, 30 Sep 2003 06:33:11 GMT NNTP-Posting-Host: 24.71.223.147 X-Complaints-To: abuse@shaw.ca X-Trace: pd7tw3no 1064903591 24.71.223.147 (Tue, 30 Sep 2003 00:33:11 MDT) NNTP-Posting-Date: Tue, 30 Sep 2003 00:33:11 MDT