From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Sergey Organov Newsgroups: gmane.emacs.help Subject: Re: Elisp function that performs numeric computations Date: Fri, 21 Jan 2022 01:53:49 +0300 Message-ID: References: <87czkoezg4.fsf@mbork.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="23340"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri Jan 21 01:56:19 2022 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nAiDz-0005v3-06 for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 21 Jan 2022 01:56:19 +0100 Original-Received: from localhost ([::1]:53512 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nAiDt-0004bA-Md for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 20 Jan 2022 19:56:13 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:52272) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nAgJn-0006P9-1U for help-gnu-emacs@gnu.org; Thu, 20 Jan 2022 17:54:11 -0500 Original-Received: from ciao.gmane.io ([116.202.254.214]:56880) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nAgJi-0000zf-W1 for help-gnu-emacs@gnu.org; Thu, 20 Jan 2022 17:54:09 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1nAgJY-0008AC-G3 for help-gnu-emacs@gnu.org; Thu, 20 Jan 2022 23:53:56 +0100 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: 5 X-Spam_score: 0.5 X-Spam_bar: / X-Spam_report: (0.5 / 5.0 requ) BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FORGED_GMAIL_RCVD=1, FREEMAIL_FORGED_FROMDOMAIN=0.248, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.248, NML_ADSP_CUSTOM_MED=0.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:135462 Archived-At: fatiparty--- via Users list for the GNU Emacs text editor writes: > Jan 19, 2022, 23:29 by mbork@mbork.pl: > >> >> (defun test (depth maxdepth rptdepth) >> >>> "Compute depth to use." >>> (interactive) >>> >>> (let* ( (j rptdepth) >>> (w (- maxdepth j)) >>> (p (+ w 1)) >>> (r (mod (- depth maxdepth 1) p) ) >>> (o (+ j r)) ) >>> o)) >>> > I would like to adapt the function a little bit more.   If depth <= maxdepth > I want to set o=depth instead of performing the computation shown for the > variable o. Did I get it right, I wonder? (defun test (depth maxdepth rptdepth) (if (<= depth maxdepth) depth (+ rptdepth (mod (- depth maxdepth 1) (- maxdepth rptdepth -1))))) Is it how true (E)Lisp'er would write it? -- Sergey Organov