From: Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>
To: help-gnu-emacs@gnu.org
Subject: Re: How to read an integer from the minibuffer
Date: Tue, 16 Nov 2021 07:21:38 +0100 [thread overview]
Message-ID: <87tugc39jh.fsf@zoho.eu> (raw)
In-Reply-To: YY9dLyK+wgM9dVV4@protected.localdomain
Jean Louis wrote:
>>> Should I say "actual number"?
>>
>> It depends:
>>
>> complex C = ... -3 + 2i, 0, 1 + 3i ...
>> composite 4, 6, 8, 9, 10, 12 ...
>> integers Z = ... -3, -2, -1, 0, 1, 2, 3 ...
>> irrational F = ... \pi, \sqrt{2}, 0.121221222 ...
>> natural N = 1, 2, 3, 4 ...
>> prime P = 2, 3, 5, 7, 11, 13, 17 ...
>> rational Q = -\frac{1}{2}, 0.33333 ... \frac{5}{2}, \frac{11}{10} ...
>> real R = ... -3, -1, 0, \frac{1}{5}, 1.1, \sqrt{2}, 2, 3, \pi ...
>> whole W = 0, 1, 2, 3, 4 ...
>>
>> https://davenport.libguides.com/math-skills-overview/basic-operations/sets
>
> I would just check for those numbers that are accepted by
> Emacs Lisp.
>
> 2i does not evaluate, thus I cannot use that one.
You can use complex/imaginary numbers in Elisp, e.g.
(calc-eval "1 + 2i + 3")
Or
(calcFunc-add 3 '(float 5 0) '(cplx 4 5)) ; (cplx (float 12 0) 5)
See here for more discussion:
https://stackoverflow.com/questions/28629797/complex-imaginary-numbers-in-elisp
--
underground experts united
https://dataswamp.org/~incal
next prev parent reply other threads:[~2021-11-16 6:21 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-11 4:53 How to read an integer from the minibuffer Marcin Borkowski
2021-11-11 5:11 ` Po Lu
2021-11-11 7:18 ` Marcin Borkowski
2021-11-12 7:21 ` Yuri Khan
2021-11-13 6:59 ` Marcin Borkowski
2021-11-13 8:43 ` tomas
2021-11-13 7:33 ` Jean Louis
2021-11-16 6:39 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-16 7:37 ` Yuri Khan
2021-11-16 8:00 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-11 6:27 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-11 10:25 ` Gregory Heytings
2021-11-11 10:28 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-11 11:00 ` Gregory Heytings
2021-11-11 13:20 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-11 11:17 ` Gregory Heytings
2021-11-11 13:39 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-11 14:30 ` Gregory Heytings
2021-11-12 0:28 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 0:37 ` Gregory Heytings
2021-11-12 0:41 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 0:52 ` Gregory Heytings
2021-11-12 0:57 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 19:05 ` Jean Louis
2021-11-12 19:25 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 19:55 ` Jean Louis
2021-11-12 21:14 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-13 6:37 ` Jean Louis
2021-11-16 6:21 ` Emanuel Berg via Users list for the GNU Emacs text editor [this message]
2021-11-12 19:56 ` Jean Louis
2021-11-12 20:02 ` Jean Louis
2021-11-12 20:24 ` tomas
2021-11-12 21:15 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 21:30 ` tomas
2021-11-12 21:34 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-13 6:46 ` Jean Louis
2021-11-13 7:32 ` tomas
2021-11-16 6:24 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-13 6:36 ` Jean Louis
2021-11-13 8:17 ` tomas
2021-11-13 8:44 ` Jean Louis
2021-11-16 6:15 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-16 6:03 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 1:09 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 1:12 ` Gregory Heytings
2021-11-12 3:07 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-12 6:21 ` Marcin Borkowski
2021-11-16 7:52 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-16 8:05 ` Yuri Khan
2021-11-16 9:38 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-16 11:18 ` Yuri Khan
2021-11-16 11:37 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-16 11:52 ` Yuri Khan
2021-11-16 12:00 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-16 13:10 ` Emanuel Berg via Users list for the GNU Emacs text editor
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