From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] circular fonctions: precision?
Date: Mon, 3 Oct 2011 10:46:03 -0400 [thread overview]
Message-ID: <5c40d8ac0708e6def897a2f6807e20f1@chula.quanstro.net> (raw)
In-Reply-To: <1FC8ACD9-092B-43DB-8FF5-206FA5E02C55@bitblocks.com>
> On Oct 3, 2011, at 4:41 AM, tlaronde@polynum.com wrote: >>
> > But to come back to programming, when calculus is the crux, the more
> > common/known even new! programming languages are not great tools,
> > and "portability" i.e. proved accuracy of the implementation for a
> > wide range of hardware/software is fuzzy. And it's amazing to see
> > how one can rapidly face errors even with very basic computations.
> > And even with integer arithmetic, not much help is guaranteed by
> > languages.
> >
> Integer & rational arithmetic is guaranteed in Scheme and some other
> languages. In an R5RS compliant Scheme implementation you have for
> example (/ 5 7) => 5/7. (If only people get over their irrational
> fear of prefix syntax they would discover a great little language in
> Scheme.) But most prog. languages do not specify minimal required
> accuracy on standard floating pt. functions. May be because most
> language hackers are not numerical analysts!
i think you've got it there. how do i stuff 5/7 in a 32-bit ethernet register?
if you're close to the h/w, it's probablly just confusing to fight it.
- erik
next prev parent reply other threads:[~2011-10-03 14:46 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-02 16:38 tlaronde
2011-10-02 17:52 ` Bakul Shah
2011-10-02 18:06 ` erik quanstrom
2011-10-02 18:40 ` Bakul Shah
2011-10-02 18:44 ` erik quanstrom
2011-10-02 18:59 ` andrew zerger
2011-10-02 19:04 ` tlaronde
2011-10-02 19:14 ` Bakul Shah
2011-10-02 19:18 ` erik quanstrom
2011-10-02 18:44 ` tlaronde
2011-10-02 18:48 ` tlaronde
2011-10-02 18:28 ` tlaronde
2011-10-02 19:06 ` Bakul Shah
2011-10-03 11:41 ` tlaronde
2011-10-03 14:39 ` Bakul Shah
2011-10-03 14:46 ` erik quanstrom [this message]
2011-10-03 15:29 ` Bakul Shah
2011-10-03 15:58 ` Bakul Shah
2011-10-03 16:49 ` tlaronde
2011-10-03 13:03 ` Russ Cox
2011-10-03 14:44 ` Bakul Shah
2011-10-03 14:57 ` Russ Cox
2011-10-03 15:34 ` Bakul Shah
2011-10-03 15:47 ` Russ Cox
2011-10-03 16:53 ` tlaronde
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