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Re: [Chicken-hackers] numerator/denominator
From: |
John Cowan |
Subject: |
Re: [Chicken-hackers] numerator/denominator |
Date: |
Tue, 4 Aug 2009 14:19:48 -0400 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
Thomas Bushnell BSG scripsit:
> But I don't care much about it, we could take the alternative view of
> r6rs, and then real? and number? would continue to match, and rational?
> would be false on the infinities and nans.
Pragmatically I prefer this view. In theory, +inf, -inf, and +nan
can be understood as vague rational numbers, where +inf is "a rational
number larger than any representable number" and -inf corresponds to that.
But +nan is sometimes "no number at all" and sometimes "any number at all"
and doesn't quite fit.
--
There is / One art John Cowan <address@hidden>
No more / No less http://www.ccil.org/~cowan
To do / All things
With art- / Lessness --Piet Hein
Re: [Chicken-hackers] numerator/denominator, Thomas Bushnell BSG, 2009/08/04
Re: [Chicken-hackers] numerator/denominator, felix winkelmann, 2009/08/05