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Re: [PATCH] Handle products with exact 0 differently, etc
From: |
Mark H Weaver |
Subject: |
Re: [PATCH] Handle products with exact 0 differently, etc |
Date: |
Tue, 01 Feb 2011 23:57:24 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) |
Noah Lavine <address@hidden> writes:
> I haven't read through all of the discussion yet, but it's obvious
> that you have good reasons for wanting (* 0 X) to be NaN when X is
> inexact. And yet for compatibility reasons it is nice if Guile agrees
> with Scheme standards.
In case there is any doubt, the behavior of (* 0 X) that I am advocating
(that it should yield an inexact result when X is inexact) is clearly
permitted by both the R5RS and the R6RS. That much is beyond any doubt.
My disagreement with the R6RS is that it _permits_ an exact 0 result in
this case, even when infinities and NaNs are supported as numeric
objects.
> Therefore I think it would be great if you would send an email with
> exactly what you said here to address@hidden, which
> is the public discussion forum for R7RS.
Yes, thank you for suggesting that, I should write something up.
Mark
- [PATCH] Handle products with exact 0 differently, etc, Mark H Weaver, 2011/02/01
- Re: [PATCH] Handle products with exact 0 differently, etc, Andy Wingo, 2011/02/01
- Re: [PATCH] Handle products with exact 0 differently, etc, Andy Wingo, 2011/02/01
- Re: [PATCH] Handle products with exact 0 differently, etc, Neil Jerram, 2011/02/01
- Re: [PATCH] Handle products with exact 0 differently, etc, Mark H Weaver, 2011/02/01
- Re: [PATCH] Handle products with exact 0 differently, etc, Neil Jerram, 2011/02/01
- Re: [PATCH] Handle products with exact 0 differently, etc, Mark H Weaver, 2011/02/01
- Re: [PATCH] Handle products with exact 0 differently, etc, Mark H Weaver, 2011/02/01
- Re: [PATCH] Handle products with exact 0 differently, etc, Noah Lavine, 2011/02/01
- Re: [PATCH] Handle products with exact 0 differently, etc,
Mark H Weaver <=
- Re: [PATCH] Handle products with exact 0 differently, etc, Neil Jerram, 2011/02/06
- Re: [PATCH] Handle products with exact 0 differently, etc, Neil Jerram, 2011/02/06