From unknown Mon Jun 23 13:10:20 2025 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.509 (Entity 5.509) Content-Type: text/plain; charset=utf-8 From: bug#15320 <15320@debbugs.gnu.org> To: bug#15320 <15320@debbugs.gnu.org> Subject: Status: [2.0.7] Rational number representation problem Reply-To: bug#15320 <15320@debbugs.gnu.org> Date: Mon, 23 Jun 2025 20:10:20 +0000 retitle 15320 [2.0.7] Rational number representation problem reassign 15320 guile submitter 15320 Josh Stokes severity 15320 normal thanks From debbugs-submit-bounces@debbugs.gnu.org Tue Sep 10 11:44:18 2013 Received: (at submit) by debbugs.gnu.org; 10 Sep 2013 15:44:18 +0000 Received: from localhost ([127.0.0.1]:52763 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VJQ6z-0004BI-Kx for submit@debbugs.gnu.org; Tue, 10 Sep 2013 11:44:18 -0400 Received: from eggs.gnu.org ([208.118.235.92]:54721) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VJNzr-0000Ww-BX for submit@debbugs.gnu.org; Tue, 10 Sep 2013 09:28:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VJNzl-0004PI-8f for submit@debbugs.gnu.org; Tue, 10 Sep 2013 09:28:42 -0400 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: * X-Spam-Status: No, score=1.1 required=5.0 tests=BAYES_50, FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,HTML_MESSAGE,T_DKIM_INVALID autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:55866) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VJNzl-0004PD-6k for submit@debbugs.gnu.org; Tue, 10 Sep 2013 09:28:41 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56436) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VJNzk-0001z4-9F for bug-guile@gnu.org; Tue, 10 Sep 2013 09:28:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VJNzj-0004Ot-BC for bug-guile@gnu.org; Tue, 10 Sep 2013 09:28:40 -0400 Received: from mail-wi0-x242.google.com ([2a00:1450:400c:c05::242]:44828) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VJNzj-0004OV-3f for bug-guile@gnu.org; Tue, 10 Sep 2013 09:28:39 -0400 Received: by mail-wi0-f194.google.com with SMTP id c10so142299wiw.9 for ; Tue, 10 Sep 2013 06:28:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=tpkCLCsGp2JC1hcQ3dW+4uoz4pVdjLRxAqJknD7+GRg=; b=MtGPOBfmo/4KgMKO2XBRtK0nTJFAS0uGSfqB+EfAIPkSSiq5m9f/2+IFvcAIfqGFeR ZgovviAoXHX5BEehhxRFrV5EyBgH8Qq6eT3QLJ+vn+aaGYJ+3XLX1UACn8JN+1+yoByE iLktKHqM6YnUvmGcuRppADNB3XlsFiWHt0orwR3j9mykP9zDjVId7cTy8ZukaJwA77wP kGPgNt54YI2IbqNWgarzvMPXnfclWXzbBdNwTyTwaAUdDOZ1f0FKTuP9slOlTU8193rt t+9xu27CylufaPY1bFw9otSIwdXA2KJzrx5DgRGjxfm0mhYcNZYOfNR/XqTni4qRlMPX /PaA== MIME-Version: 1.0 X-Received: by 10.180.20.42 with SMTP id k10mr13509501wie.0.1378819717324; Tue, 10 Sep 2013 06:28:37 -0700 (PDT) Received: by 10.217.132.133 with HTTP; Tue, 10 Sep 2013 06:28:37 -0700 (PDT) Date: Tue, 10 Sep 2013 14:28:37 +0100 Message-ID: Subject: [2.0.7] Rational number representation problem From: Josh Stokes To: bug-guile@gnu.org Content-Type: multipart/alternative; boundary=bcaec53f395975e27f04e6077bec X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -3.8 (---) X-Debbugs-Envelope-To: submit X-Mailman-Approved-At: Tue, 10 Sep 2013 11:44:16 -0400 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.8 (---) --bcaec53f395975e27f04e6077bec Content-Type: text/plain; charset=ISO-8859-1 It seems that certain small numbers are represented as integers, as (* 4294967296 4294967296) results in 0, but (* 3294967296 3294967296) returns the correct value of 10856809481709551616. In addition, (ash 1 64) gives 0, but (ash 1 65) works correctly. --bcaec53f395975e27f04e6077bec Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
It seems that certain small numbers are represented as int= egers, as=A0(* 4294967296 4294967296) results in 0, but=A0(* 3294967296 329= 4967296) returns the correct value of=A010856809481709551616. In addition, = (ash 1 64) gives 0, but (ash 1 65) works correctly.
--bcaec53f395975e27f04e6077bec-- From debbugs-submit-bounces@debbugs.gnu.org Thu Sep 12 17:03:52 2013 Received: (at 15320-close) by debbugs.gnu.org; 12 Sep 2013 21:03:52 +0000 Received: from localhost ([127.0.0.1]:59756 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VKE3M-0004mV-0o for submit@debbugs.gnu.org; Thu, 12 Sep 2013 17:03:52 -0400 Received: from world.peace.net ([96.39.62.75]:59238 ident=hope8) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VKE3J-0004mL-Fi for 15320-close@debbugs.gnu.org; Thu, 12 Sep 2013 17:03:50 -0400 Received: from 209-6-91-212.c3-0.smr-ubr1.sbo-smr.ma.cable.rcn.com ([209.6.91.212] helo=tines.lan) by world.peace.net with esmtpsa (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.72) (envelope-from ) id 1VKE3C-0007YB-MM; Thu, 12 Sep 2013 17:03:42 -0400 From: Mark H Weaver To: Josh Stokes Subject: Re: bug#15320: [2.0.7] Rational number representation problem References: Date: Thu, 12 Sep 2013 17:03:34 -0400 In-Reply-To: (Josh Stokes's message of "Tue, 10 Sep 2013 14:28:37 +0100") Message-ID: <8738p9n461.fsf@tines.lan> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 15320-close Cc: 15320-close@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: 0.0 (/) Josh Stokes writes: > It seems that certain small numbers are represented as integers, as (* > 4294967296 4294967296) results in 0, but (* 3294967296 3294967296) > returns the correct value of 10856809481709551616. In addition, (ash 1 > 64) gives 0, but (ash 1 65) works correctly. This is fixed in Guile 2.0.9. In case you're curious: this bug came into existence when C compilers started optimizing out overflow checks, on the theory that if a signed integer overflow occurs then the behavior is unspecified and thus the compiler can do whatever it likes. http://stackoverflow.com/questions/14495636/strange-multiplication-behavior-in-guile-scheme-interpreter/14498437#14498437 Thanks, Mark From unknown Mon Jun 23 13:10:20 2025 Received: (at fakecontrol) by fakecontrolmessage; To: internal_control@debbugs.gnu.org From: Debbugs Internal Request Subject: Internal Control Message-Id: bug archived. Date: Fri, 11 Oct 2013 11:24:03 +0000 User-Agent: Fakemail v42.6.9 # This is a fake control message. # # The action: # bug archived. thanks # This fakemail brought to you by your local debbugs # administrator