From: "Richard Hartmann" <richih.mailinglist@gmail.com>
To: "Richard Hartmann" <richih.mailinglist@gmail.com>,
"Peter Stephenson" <p.w.stephenson@ntlworld.com>,
"Zsh hackers list" <zsh-workers@sunsite.dk>
Subject: Re: arithmetic operator precedence
Date: Tue, 17 Jun 2008 12:24:12 +0200 [thread overview]
Message-ID: <2d460de70806170324o5a44609x9383cc2445d67dd6@mail.gmail.com> (raw)
In-Reply-To: <20080617094509.GC5016@sc.homeunix.net>
On Tue, Jun 17, 2008 at 11:45, Stephane Chazelas
<Stephane_Chazelas@yahoo.fr> wrote:
> In which way is it more "mathematically" correct?
>
> Is that because -3² is -9?
>
> But ** is not ^, it's a binary operator whose shape reminds that
> of multiply, like a multiply++. And even then, POSIX's ^ in bc
> is handled as -3^2 = 9.
As far as I know, ^ and ** are fuly equivalent. If that is not the case, then
sorry. Do you have a link/manpage/whatever on this topic?
> It could be a good idea to ask ksh, POSIX/bc and perl authors for
> the rationale behind their choices.
Richard
next prev parent reply other threads:[~2008-06-17 10:24 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-12 9:57 Stephane Chazelas
2008-06-12 13:12 ` Mikael Magnusson
2008-06-12 13:40 ` Peter Stephenson
2008-06-12 14:47 ` Bart Schaefer
2008-06-12 15:01 ` Stephane Chazelas
2008-06-16 8:17 ` Vincent Lefevre
2008-06-16 8:07 ` Vincent Lefevre
2008-06-16 13:42 ` Peter Stephenson
2008-06-16 13:59 ` Stephane Chazelas
2008-06-16 14:33 ` Vincent Lefevre
2008-06-17 9:19 ` Richard Hartmann
2008-06-17 9:45 ` Stephane Chazelas
2008-06-17 10:24 ` Richard Hartmann [this message]
2008-06-17 10:24 ` Richard Hartmann
2008-06-17 10:38 ` Stephane Chazelas
2008-06-17 10:43 ` Peter Stephenson
2008-06-17 11:28 ` Vincent Lefevre
2008-06-17 11:46 ` Peter Stephenson
2008-06-17 12:05 ` Vincent Lefevre
2008-06-19 9:37 ` Jun T.
2008-06-19 9:54 ` Stephane Chazelas
2008-06-19 16:00 ` Vincent Lefevre
2008-06-19 16:20 ` Stephane Chazelas
2008-06-19 17:14 ` Vincent Lefevre
2008-06-19 9:58 ` Peter Stephenson
2008-06-19 12:29 ` Richard Hartmann
2008-06-19 16:04 ` Vincent Lefevre
2008-06-19 16:10 ` Mikael Magnusson
2008-06-19 16:27 ` Stephane Chazelas
2008-06-19 17:25 ` Vincent Lefevre
2008-06-19 17:20 ` Vincent Lefevre
2008-06-17 10:45 ` Richard Hartmann
2008-06-17 11:38 ` Vincent Lefevre
2008-06-17 11:19 ` Vincent Lefevre
2008-06-17 11:57 ` Stephane Chazelas
2008-06-17 12:35 ` Vincent Lefevre
2008-06-17 12:46 ` Stephane Chazelas
2008-06-17 13:02 ` Vincent Lefevre
2008-06-17 13:20 ` Stephane Chazelas
2008-06-17 14:33 ` Vincent Lefevre
2008-06-17 14:53 ` Stephane Chazelas
2008-06-17 15:49 ` Vincent Lefevre
2008-06-17 14:35 ` Stephane Chazelas
2008-06-17 15:05 ` Vincent Lefevre
2008-06-17 10:54 ` Vincent Lefevre
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