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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: jay.p.belanger@gmail.com
Cc: bug-gnu-emacs@gnu.org, Francis Litterio <flitterio@gmail.com>,
	emacs-devel@gnu.org
Subject: Re: In CVS Emacs, calc-eval gives multiplication higher precidence than division
Date: Sun, 07 Sep 2008 15:46:52 -0400	[thread overview]
Message-ID: <jwv4p4r213l.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <878wu3j4k2.fsf@gmail.com> (Jay Belanger's message of "Sun, 07 Sep 2008 11:37:01 -0500")

> That's not a bug.  While many systems give division a higher precendence
> than multiplication, that isn't a universal rule.

Actually, I don't know of any system that gives higher precedence to
division.  The general rule that (AFAIK) all programming languages
follow (other than those that don't use infix-with-precedence, such as
Lisp and Smalltalk) is that * and / have the same precedence (and are
left associative).

I think Calc is plainly wrong is giving higher precedence to the
multiplication because it's completely non standard.  But since I don't
use Calc much and since it's been that way for a while, I won't fight
for it.


        Stefan




  parent reply	other threads:[~2008-09-07 19:46 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-07 16:06 In CVS Emacs, calc-eval gives multiplication higher precidence than division Francis Litterio
2008-09-07 16:37 ` Jay Belanger
2008-09-07 18:15   ` Francis Litterio
2008-09-07 19:46   ` Stefan Monnier [this message]
2008-09-07 20:19     ` bug#920: " Lennart Borgman (gmail)
2008-09-07 20:32     ` Randal L. Schwartz
2008-09-08 10:30       ` Carsten Dominik
2008-09-08 11:01         ` Lennart Borgman
2008-09-08 20:33           ` Carsten Dominik
2008-09-08 20:39             ` Lennart Borgman (gmail)
2008-09-08 20:43               ` Randal L. Schwartz
2008-09-08 20:53                 ` bug#914: " Lennart Borgman (gmail)
2008-09-08 21:42                 ` Stefan Monnier
2008-09-09  8:11                 ` Richard M. Stallman
2008-09-09 13:26                   ` Stefan Monnier
2008-09-08 13:01         ` Stefan Monnier
2008-09-07 20:35     ` Jay Belanger
2008-09-07 21:15       ` Stefan Monnier
2008-09-07 21:19         ` Lennart Borgman (gmail)

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