From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Mauro Aranda Newsgroups: gmane.emacs.bugs Subject: bug#37235: 26.1; Precedence error in calc-eval Date: Fri, 30 Aug 2019 12:04:35 -0300 Message-ID: References: <857abb8d-8da0-82b2-d50d-01d57b4be681@sri.com> Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="0000000000008103e0059156f149" Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="17764"; mail-complaints-to="usenet@blaine.gmane.org" Cc: 37235@debbugs.gnu.org To: Charles Karney Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Aug 30 17:05:31 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1i3iSu-0004RH-Qb for geb-bug-gnu-emacs@m.gmane.org; Fri, 30 Aug 2019 17:05:28 +0200 Original-Received: from localhost ([::1]:33492 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1i3iSs-0005pX-GT for geb-bug-gnu-emacs@m.gmane.org; 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charset="UTF-8" tags 37235 notabug quit Charles Karney via "Bug reports for GNU Emacs, the Swiss army knife of text editors" writes: > In GNU Emacs 26.1 (build 1, x86_64-redhat-linux-gnu, GTK+ Version 3.23.2) > of 2018-08-13 built on buildvm-13.phx2.fedoraproject.org > Windowing system distributor 'Fedora Project', version 11.0.12004000 > System Description: Fedora release 29 (Twenty Nine) > > The precedence of calc-eval doesn't follow C-like rules. > > (calc-eval "1/2*3") returns "0.166666666667" > > returning the same answer as (calc-eval "1/2/3"). It should return > "1.5". > It works as documented in the Calc manual, section 5.15 Formulas: C-h i m calc RET 5 m formulas RET Calc gives '/' lower precedence than '*' by default. To make Calc follow C-like rules, you can set it with the command calc-c-language. You can read its documentation with: C-h i m calc RET i calc-c-language Best regards, Mauro. --0000000000008103e0059156f149 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
tags 37235 notabug
quit

Charles Karney via "= ;Bug reports for GNU Emacs, the Swiss army knife of
text editors" &= lt;bug-gnu-emacs@gnu.org> w= rites:

> In GNU Emacs 26.1 (build 1, x86_64-redhat-linux-gnu, GTK= + Version 3.23.2)
> =C2=A0 of 2018-08-13 built on buildvm-13.phx2.fedoraproject.org
= > Windowing system distributor 'Fedora Project', version 11.0.12= 004000
> System Description: Fedora release 29 (Twenty Nine)
><= br>> The precedence of calc-eval doesn't follow C-like rules.
>= ;
> =C2=A0 =C2=A0(calc-eval "1/2*3") returns "0.166666= 666667"
>
> returning the same answer as (calc-eval "= 1/2/3").=C2=A0 It should return
> "1.5".
>
It works as documented in the Calc manual, section 5.15 Formulas:
C-h = i m calc RET 5 m formulas RET

Calc gives '/' lower precedenc= e than '*' by default.

To make Calc follow C-like rules, you= can set it with the command
calc-c-language.=C2=A0 You can read its doc= umentation with:
C-h i m calc RET i calc-c-language


Best rega= rds,
Mauro.
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