Re: Precision of floating point multiply

Article View: comp.lang.fortran

Article #6509

#6509

From: GerardS
Date: Mon, 29 Sep 2003 16:51

14 lines
2099 bytes

| Richard Maine wrote:
|> Ron Shepard wrote:
|> Are the exponents converted automatically with these instructions?
|> If they aren't, then it seems odd to be able to convert between a
|> double precision floating point value to a single precision value
|> just by loading the value into a register.
|
| Add usual caveat about my memory, but the exponents don't *NEED*
| converting.  I recall thinking it sort of strange the first time I saw
| floating point formats where the exponents weren't the same for single
| and double.  I've subsequently gotten used to it.  Sounds to me like
| you are so used to it that you didn't think of the other possibility.  :-)

What if the number isn't normalized ? ___________________________Gerard S.

Technical Details

Message-ID: <vngokjk8nourca@corp.supernews.com>

Path: arc1-ca.pugleaf.net!news1.google.com!sn-xit-02!sn-xit-06!sn-post-01!supernews.com!corp.supernews.com!not-for-mail

References:

<dG4db.598668$uu5.97984@sccrnsc04> <iu6fnvch0g09q9f335tt89ogfcj5jm2ovh@4ax.com> <kmRdb.626671$YN5.452649@sccrnsc01> <bl8q1g$iv7$1@pegasus.csx.cam.ac.uk> <xrXdb.631209$Ho3.121609@sccrnsc03> <ron-shepard-609A55.10533829092003@news.comcast.giganews.com> <uefziffu7c.fsf@altair.dfrc.nasa.gov>

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 09:49:23 PST
Path: arc1-ca.pugleaf.net!news1.google.com!sn-xit-02!sn-xit-06!sn-post-01!supernews.com!corp.supernews.com!not-for-mail
From: "GerardS" <GerardS@PrairieTech.Net>
Newsgroups: comp.lang.fortran,comp.arch,bit.listserv.ibm-main,alt.folklore.computers
Subject: Re: Precision of floating point multiply
Date: Mon, 29 Sep 2003 11:51:52 -0500
Organization: Posted via Supernews, http://www.supernews.com
Message-ID: <vngokjk8nourca@corp.supernews.com>
References: <dG4db.598668$uu5.97984@sccrnsc04> <iu6fnvch0g09q9f335tt89ogfcj5jm2ovh@4ax.com> <kmRdb.626671$YN5.452649@sccrnsc01> <bl8q1g$iv7$1@pegasus.csx.cam.ac.uk> <xrXdb.631209$Ho3.121609@sccrnsc03> <ron-shepard-609A55.10533829092003@news.comcast.giganews.com> <uefziffu7c.fsf@altair.dfrc.nasa.gov>
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2800.1158
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165
X-Complaints-To: abuse@supernews.com
Lines: 17

Reply to Parent Message