GNU bug report logs - #51265
29.0.50; Calc documentation: wrong sign of calculation

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Bird <birdsite <at> airmail.cc>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.0.50; Calc documentation: wrong sign of calculation
Date: Mon, 18 Oct 2021 13:30:52 +0000

Hello, there is a minor typo in info node '(calc) Arithmetic Tutorial',
in texi source, line 2868 of doc/misc/calc.texi

The hyperbolic cosine of -64 should be 3.1175e27 instead of -3.1175e27.
It can be seen on calc with:
C-x * c m r _64 RET H C
which gives 3.11757454041e27

Thanks!

In GNU Emacs 29.0.50 (build 2, x86_64-pc-linux-musl, X toolkit, cairo version 1.16.0, Xaw scroll bars)
 of 2021-10-18 built on laptop
Repository revision: f3c5a1b3685debefb9c019f96992b887f6ca69f2
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12013000
System Description: void

Configured using:
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  value of $LANG: en_US.UTF-8
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Major mode: Lisp Interaction

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-- 
Fortune:
They are relatively good but absolutely terrible.
		-- Alan Kay, commenting on Apollos

Message #8 received at 51265 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Bird <birdsite <at> airmail.cc>
Cc: 51265 <at> debbugs.gnu.org
Subject: Re: bug#51265: 29.0.50; Calc documentation: wrong sign of calculation
Date: Mon, 18 Oct 2021 15:58:08 +0200

Bird <birdsite <at> airmail.cc> writes:

> Hello, there is a minor typo in info node '(calc) Arithmetic Tutorial',
> in texi source, line 2868 of doc/misc/calc.texi
>
> The hyperbolic cosine of -64 should be 3.1175e27 instead of -3.1175e27.
> It can be seen on calc with:
> C-x * c m r _64 RET H C
> which gives 3.11757454041e27

Yup.  I've now fixed the sign here in Emacs 28.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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