Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!news.glorb.com!border3.nntp.dca.giganews.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 14:18:48 -0500
From: Randy Yates <yates@digitalsignallabs.com>
Newsgroups: comp.arch.embedded,comp.dsp
Subject: Re: Small, fast, resource-rich processor
Organization: Digital Signal Labs
References: <FcSdnVvNFdaFC63PnZ2dnUVZ5rOdnZ2d@giganews.com> <7x7gedqun7.fsf@ruckus.brouhaha.com> <nJidnWKYksHCMafPnZ2dnUVZ8t6dnZ2d@lyse.net> <7xa9j82g4a.fsf@ruckus.brouhaha.com> <XIydndCNPpDg2KLPnZ2dnUVZ8iqdnZ2d@lyse.net> <7xhad4vhoi.fsf@ruckus.brouhaha.com> <yvCdncNwwonoCNXPnZ2dnUVZ8kednZ2d@lyse.net> <l2c2ag$1o6$1@dont-email.me> <FoydnQRIpaUV6tfPnZ2dnUVZ8oCdnZ2d@lyse.net> <l2dtjh$mkj$1@dont-email.me> <nI6dnQ4fr5ayGdfPnZ2dnUVZ8iadnZ2d@lyse.net> <l2ett1$csd$1@dont-email.me> <l2f62g$nb3$1@speranza.aioe.org> <l2felv$ngh$1@dont-email.me> <87k3hw39ec.fsf@digitalsignallabs.com> <l2gh2q$qjq$1@dont-email.me> <87wqlvhjfd.fsf@digitalsignallabs.com> <l2hg7n$9a8$1@dont-email.me> <87txgzfwfs.fsf@digitalsignallabs.com>
Date: Wed, 02 Oct 2013 15:18:45 -0400
Message-ID: <87fvsjbhwq.fsf@digitalsignallabs.com>
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.2 (gnu/linux)
Cancel-Lock: sha1:S/axWS5VdyFsnCzRf/qJBi2o/AU=
MIME-Version: 1.0
Content-Type: text/plain
Lines: 36
X-Trace: sv3-eaXaPb7NF58mSxmNxxa8FAH/AQ+9e56qEvcXAH7LwgHjl1JBx7VHxrvTCdg5hoeXNQlsm2EzV+ybO+h!wbzPGnrxlqdyiDLpFvUWZbCZrEYlN+Lt+rSjUna1qcAMUuWfwyBmippwgRSEGLmwV/2mAx75
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: 3037
Xref: csiph.com comp.arch.embedded:14094 comp.dsp:19457

Randy Yates <yates@digitalsignallabs.com> writes:

> rickman <gnuarm@gmail.com> writes:
>
>> On 10/2/2013 9:49 AM, Randy Yates wrote:
>>> rickman<gnuarm@gmail.com>  writes:
>>>
>>>> On 10/1/2013 6:37 PM, Randy Yates wrote:
>>>>> rickman<gnuarm@gmail.com>   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.
>>>>
>>>> Really?  You can't have a 64 bit mantissa with a floating point
>>>> number? Wow, it must be one of those really subtle mathematical
>>>> things...
>>>
>>> I'm sorry - I should have been more explicit on the basis of
>>> comparison I am proposing: same number of bits for each.
>>
>> Ok, then the point is... pointless.
>
> Really? The amount of resources required to accomplish a task is
> pointless?

Or was that a joke? Sorry!
-- 
Randy Yates
Digital Signal Labs
http://www.digitalsignallabs.com