From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Andy Wingo Newsgroups: gmane.lisp.guile.user Subject: Re: How to stay in fixnum range? Date: Wed, 21 Jan 2009 16:00:33 +0100 Message-ID: References: <1eb53f5d0901191302tecf055bte1e37ad167858b9c@mail.gmail.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1232550187 9785 80.91.229.12 (21 Jan 2009 15:03:07 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 21 Jan 2009 15:03:07 +0000 (UTC) Cc: guile-user@gnu.org To: "Panicz Maciej Godek" Original-X-From: guile-user-bounces+guile-user=m.gmane.org@gnu.org Wed Jan 21 16:04:17 2009 Return-path: Envelope-to: guile-user@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1LPecP-0004MF-T7 for guile-user@m.gmane.org; Wed, 21 Jan 2009 16:03:50 +0100 Original-Received: from localhost ([127.0.0.1]:49666 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LPeb8-0006ZI-4D for guile-user@m.gmane.org; Wed, 21 Jan 2009 10:02:30 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LPeb3-0006ZC-Bh for guile-user@gnu.org; Wed, 21 Jan 2009 10:02:25 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LPeax-0006Yz-Ve for guile-user@gnu.org; Wed, 21 Jan 2009 10:02:24 -0500 Original-Received: from [199.232.76.173] (port=43518 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LPeax-0006Yw-S1 for guile-user@gnu.org; Wed, 21 Jan 2009 10:02:19 -0500 Original-Received: from a-sasl-fastnet.sasl.smtp.pobox.com ([207.106.133.19]:46751 helo=sasl.smtp.pobox.com) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1LPeax-0007Qj-D9 for guile-user@gnu.org; Wed, 21 Jan 2009 10:02:19 -0500 Original-Received: from localhost.localdomain (unknown [127.0.0.1]) by a-sasl-fastnet.sasl.smtp.pobox.com (Postfix) with ESMTP id 77914926F9; Wed, 21 Jan 2009 10:02:14 -0500 (EST) Original-Received: from unquote (unknown [80.24.4.74]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by a-sasl-fastnet.sasl.smtp.pobox.com (Postfix) with ESMTPSA id AC35F926F8; Wed, 21 Jan 2009 10:02:12 -0500 (EST) In-Reply-To: <1eb53f5d0901191302tecf055bte1e37ad167858b9c@mail.gmail.com> (Panicz Maciej Godek's message of "Mon, 19 Jan 2009 22:02:35 +0100") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux) X-Pobox-Relay-ID: 7CD696B4-E7CC-11DD-ABEF-5720C92D7133-02397024!a-sasl-fastnet.pobox.com X-detected-operating-system: by monty-python.gnu.org: Solaris 10 (beta) X-BeenThere: guile-user@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General Guile related discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: guile-user-bounces+guile-user=m.gmane.org@gnu.org Errors-To: guile-user-bounces+guile-user=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.user:7074 Archived-At: On Mon 19 Jan 2009 22:02, "Panicz Maciej Godek" writes: > The problem may appear when I add some number to the > return value of get-internal-real-time -- what if, during addition, > the scheme fixnum limit is exceeded and the variable becomes > a bignum? You could (logand (get-internal-real-time) most-positive-fixnum) Have you determined when this could happen? most-positive-fixnum can be quite large on 64-bit machines. I guess you only get 64 days without bignums on 32-bit machines. Andy -- http://wingolog.org/