GNU bug report logs - #11887
string->number edge cases

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Package: guile;

Reported by: Ian Price <ianprice90 <at> googlemail.com>

Date: Mon, 9 Jul 2012 12:36:01 UTC

Severity: normal

Done: Mark H Weaver <mhw <at> netris.org>

Bug is archived. No further changes may be made.

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From: Peter Bex <Peter.Bex <at> xs4all.nl>
To: Andy Wingo <wingo <at> pobox.com>
Cc: Ian Price <ianprice90 <at> googlemail.com>, 11887 <at> debbugs.gnu.org
Subject: bug#11887: string->number edge cases
Date: Tue, 5 Mar 2013 20:06:33 +0100

On Tue, Mar 05, 2013 at 03:49:13PM +0100, Andy Wingo wrote:
> Hi Ian,
> 
> On Mon 09 Jul 2012 14:29, Ian Price <ianprice90 <at> googlemail.com> writes:
> 
> > PARSE ERROR         ("+InF.0" +inf.0 "+inf.0" "+Inf.0") => #f
> > PARSE ERROR         ("-iNF.0" -inf.0 "-inf.0" "-Inf.0") => #f
> > PARSE ERROR         ("+NAN.0" +nan.0 "+nan.0" "+NaN.0") => #f
> 
> These are not errors.  +NAN.0 is not even not a number :)

I double-checked, but in the upcoming R7RS it is (see 7.1, paragraph 2 of
draft 7).  It looks like R6RS was case-sensitive in its numerical syntax
and +NAN.0 is disallowed by it.

Cheers,
Peter
-- 
http://www.more-magic.net
This bug report was last modified 12 years and 160 days ago.

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