From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: ludo@gnu.org (Ludovic =?iso-8859-1?Q?Court=E8s?=) Newsgroups: gmane.lisp.guile.devel Subject: Re: [PATCH] Take some lowhanging fruit to speed up R6RS fixnum operations Date: Thu, 24 Mar 2011 22:51:08 +0100 Message-ID: <87hbas427n.fsf@gnu.org> References: <1300836034-17716-1-git-send-email-a.rottmann@gmx.at> <1300836034-17716-2-git-send-email-a.rottmann@gmx.at> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: dough.gmane.org 1301003493 8313 80.91.229.12 (24 Mar 2011 21:51:33 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Thu, 24 Mar 2011 21:51:33 +0000 (UTC) To: guile-devel@gnu.org Original-X-From: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Thu Mar 24 22:51:29 2011 Return-path: Envelope-to: guile-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Q2sRE-0006od-S4 for guile-devel@m.gmane.org; Thu, 24 Mar 2011 22:51:29 +0100 Original-Received: from localhost ([127.0.0.1]:54245 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Q2sRE-0003uX-9A for guile-devel@m.gmane.org; Thu, 24 Mar 2011 17:51:28 -0400 Original-Received: from [140.186.70.92] (port=48706 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Q2sRA-0003tx-HU for guile-devel@gnu.org; Thu, 24 Mar 2011 17:51:25 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Q2sR9-0008Qr-0G for guile-devel@gnu.org; Thu, 24 Mar 2011 17:51:24 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:46624) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Q2sR8-0008QR-RB for guile-devel@gnu.org; Thu, 24 Mar 2011 17:51:22 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1Q2sR6-0006iq-9v for guile-devel@gnu.org; Thu, 24 Mar 2011 22:51:20 +0100 Original-Received: from reverse-83.fdn.fr ([80.67.176.83]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 24 Mar 2011 22:51:20 +0100 Original-Received: from ludo by reverse-83.fdn.fr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 24 Mar 2011 22:51:20 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 41 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: reverse-83.fdn.fr X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 4 Germinal an 219 de la =?iso-8859-1?Q?R=E9volution?= X-PGP-Key-ID: 0xEA52ECF4 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 83C4 F8E5 10A3 3B4C 5BEA D15D 77DD 95E2 EA52 ECF4 X-OS: x86_64-unknown-linux-gnu User-Agent: Gnus/5.110013 (No Gnus v0.13) Emacs/23.3 (gnu/linux) Cancel-Lock: sha1:3j2xx9vyQq+MhMyic1ltgJHFgTo= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 80.91.229.12 X-BeenThere: guile-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Developers list for Guile, the GNU extensibility library" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Errors-To: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.devel:11972 Archived-At: Hi Andreas, I’m all for your suggestion. Andreas Rottmann writes: > + (define-syntax define-fxop* > + (syntax-rules () > + ((_ name op) > + (define name > + (case-lambda > + ((x y) > + (assert-fixnum x y) > + (op x y)) > + (args > + (assert-fixnums args) > + (apply op args))))))) > + > + (define-fxop* fx=? =) How about making something like this (untested): (define-syntax define-fxop* (syntax-rules () ((_ name op) (define-syntax name (lambda (s) (syntax-case s () ((_ x y) #'(begin (assert-fixnum x y) (op x y))) ((_ args ...) #'(apply op args)) (_ #'op))))))) This way, there’d be no procedure call involved and ‘=’, ‘+’, etc. would use the corresponding instruction in the base case. Thanks, Ludo’.