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From: Mark H Weaver <mhw@netris.org>
To: "Göran Weinholt" <goran@weinholt.se>
Cc: 14879-done@debbugs.gnu.org
Subject: bug#14879: fixnum-width, greatest-fixnum and least-fixnum disagree
Date: Tue, 16 Jul 2013 17:41:41 -0400	[thread overview]
Message-ID: <87li5618tm.fsf@tines.lan> (raw)
In-Reply-To: <87ip0a61rk.fsf@industria.weinholt.se> ("Göran Weinholt"'s message of "Tue, 16 Jul 2013 16:02:55 +0200")

Göran Weinholt <goran@weinholt.se> writes:

> scheme@(guile-user)> (import (rnrs))
> scheme@(guile-user)> (fixnum-width)
> $1 = 61
> scheme@(guile-user)> (greatest-fixnum)
> $2 = 2305843009213693951
> scheme@(guile-user)> (least-fixnum)
> $3 = -2305843009213693952
>
> If the reported fixnum width is correct, then these should be the least
> and greatest fixnums:
>
>   (- (expt 2 (- (fixnum-width) 1)))   => -1152921504606846976
>   (- (expt 2 (- (fixnum-width) 1)) 1) => 1152921504606846975
>
> If the reported least and greatest fixnums are correct, then the fixnum
> width is actually 62.

That's correct.  Fixed in 06903786211afd9a554b8f009a37111f729607ee.

    Thanks!
      Mark





      reply	other threads:[~2013-07-16 21:41 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-16 14:02 bug#14879: fixnum-width, greatest-fixnum and least-fixnum disagree Göran Weinholt
2013-07-16 21:41 ` Mark H Weaver [this message]

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