From: Heime <heimeborgia@protonmail.com>
To: Heime via Users list for the GNU Emacs text editor
<help-gnu-emacs@gnu.org>
Subject: macro that uses local variables
Date: Tue, 08 Aug 2023 00:32:25 +0000 [thread overview]
Message-ID: <CTRcEs5TyCZ4Mr3zGFP_ALOdBI9eRrIgavhmOzTVcPCKA-Xg6a2L3-YDZsFiaX8E0QB0kGnnzbj59f_KsIucZIG9HjsCUeBnZMYZUpVeCd0=@protonmail.com> (raw)
I am using the rocket equation in this macro. I want to change it such that
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))) )
next reply other threads:[~2023-08-08 0:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-08 0:32 Heime [this message]
2023-08-08 1:27 ` macro that uses local variables Emanuel Berg
2023-08-09 3:09 ` Heime
2023-08-09 21:02 ` Emanuel Berg
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