X-Received: by 10.58.40.83 with SMTP id v19mr41188vek.41.1380722155307; Wed, 02 Oct 2013 06:55:55 -0700 (PDT) Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!news.glorb.com!a6no815010qak.0!news-out.google.com!9ni3294qaf.0!nntp.google.com!Xl.tags.giganews.com!border1.nntp.dca.giganews.com!nntp.giganews.com!local2.nntp.dca.giganews.com!nntp.supernews.com!news.supernews.com.POSTED!not-for-mail NNTP-Posting-Date: Wed, 02 Oct 2013 08:55:55 -0500 From: Randy Yates Newsgroups: comp.arch.embedded,comp.dsp Subject: Re: Small, fast, resource-rich processor Organization: Digital Signal Labs References: <7x7gedqun7.fsf@ruckus.brouhaha.com> <7xa9j82g4a.fsf@ruckus.brouhaha.com> <7xhad4vhoi.fsf@ruckus.brouhaha.com> <87k3hw39ec.fsf@digitalsignallabs.com> Date: Wed, 02 Oct 2013 09:55:54 -0400 Message-ID: <8738ojdbf9.fsf@digitalsignallabs.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.2 (gnu/linux) Cancel-Lock: sha1:UlFd2hcsD1uUrUJiZAaPSwbSGsY= MIME-Version: 1.0 Lines: 27 X-Trace: sv3-2RenfjHlNTduYmd6tL61gkoYnT6jjjSNBIIJCMb7D+lRi22ZFOhSNn9Y/ZbilRaQwViv7p9WTWBE0Qo!wY+abtXdK1Dz3ZLj2nbrZQRW8yMlXsw7TSNZZpw0gmdXgg/P5NxPVcnLEXCGs6MEgnm4ciRX X-Complaints-To: www.supernews.com/docs/abuse.html X-DMCA-Complaints-To: www.supernews.com/docs/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 X-Original-Bytes: 2644 Content-Type: text/plain Xref: csiph.com comp.arch.embedded:14087 comp.dsp:19448 Tim Wescott writes: > On Tue, 01 Oct 2013 18:37:31 -0400, Randy Yates wrote: > >> rickman writes: >>> [...] >>> I'm just going to make one more point and then I'm done with this >>> topic. Floating point is just fixed point with a range extending >>> multiplier added. Anything you can do with fixed point you can do with >>> floating point. The opposite is *not* true. >> >> Here is something you can do with fixed-point that you can't do with >> floating point: perform a multiply-accumulate with 64 bits of precision. > > You're presuming that floating point ends at 64-bit. There's higher > (even arbitrary) precision floating point standards out there. You mean like GMP (Gnu Multi-Precision)? Yeah, I know - just got done doing some coding with that library a few weeks back. > Just sayin' Just respondin' -- Randy Yates Digital Signal Labs http://www.digitalsignallabs.com