From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Heime Newsgroups: gmane.emacs.help Subject: macro that uses local variables Date: Tue, 08 Aug 2023 00:32:25 +0000 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="32939"; mail-complaints-to="usenet@ciao.gmane.io" To: Heime via Users list for the GNU Emacs text editor Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Tue Aug 08 02:33:13 2023 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 1qTAeu-0008Lp-Ms for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 08 Aug 2023 02:33:12 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qTAeP-00041e-CY; Mon, 07 Aug 2023 20:32:41 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qTAeN-0003z0-Ux for help-gnu-emacs@gnu.org; Mon, 07 Aug 2023 20:32:39 -0400 Original-Received: from mail-4324.protonmail.ch ([185.70.43.24]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qTAeM-0003cP-48 for help-gnu-emacs@gnu.org; Mon, 07 Aug 2023 20:32:39 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail3; t=1691454755; x=1691713955; bh=HaJEHNzEMUr8GrGZEK9Sm3x1spiitTeLK529DBr9hJM=; h=Date:To:From:Subject:Message-ID:Feedback-ID:From:To:Cc:Date: Subject:Reply-To:Feedback-ID:Message-ID:BIMI-Selector; b=f4Bqc5ObaT86r8ZaUmUDF05lRw6oivxhUqJDwZ9pnut/UDbjn6n60NbGzkQFUSC++ f77+ePbL8Bj6cD8W7HlPNXBeeUR6/7JDzDW13E9IEZmXFbT9+adKTD5L13ZrJxKsRx TxWsDa9H8tbb+aHhIOw5cS2524yhf7YAT9Sjds/RsJ94lt5+HuJ879go+rxrJsiuSk /Dz+KlAioVJUPpUOSfXFZbYSku6EqOmTC9tvG1X2305laD6dKyGapddrwMcY85sSzC /moYimp3YySivPv8zVJdRLFNGRcBlsePFoIirNAbsu1MhIRnJ7sDNnbMkiJhjLxFUd JHFKj745pUIHA== Feedback-ID: 57735886:user:proton Received-SPF: pass client-ip=185.70.43.24; envelope-from=heimeborgia@protonmail.com; helo=mail-4324.protonmail.ch X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham 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-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:144672 Archived-At: I am using the rocket equation in this macro. I want to change it such tha= t the arguments are set as local variables. How does one code that ? (defmacro booster-velocity-change (specific-impulse standard-gravity initial-mass final-mass) "Compute change of velocity using rocket equation." `(* (* ,specific-impulse ,standard-gravity) (log (mass-ratio ,initial-mass ,final-mass))) )