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Re: How to read an integer from the minibuffer
From: |
Emanuel Berg |
Subject: |
Re: How to read an integer from the minibuffer |
Date: |
Tue, 16 Nov 2021 07:21:38 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) |
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
- Re: How to read an integer from the minibuffer, (continued)
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/11
- Re: How to read an integer from the minibuffer, Gregory Heytings, 2021/11/11
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/11
- Re: How to read an integer from the minibuffer, Gregory Heytings, 2021/11/11
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/11
- Re: How to read an integer from the minibuffer, Jean Louis, 2021/11/12
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/12
- Re: How to read an integer from the minibuffer, Jean Louis, 2021/11/12
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/12
- Re: How to read an integer from the minibuffer, Jean Louis, 2021/11/13
- Re: How to read an integer from the minibuffer,
Emanuel Berg <=
- Re: How to read an integer from the minibuffer, Jean Louis, 2021/11/12
- Re: How to read an integer from the minibuffer, Jean Louis, 2021/11/12
- Re: How to read an integer from the minibuffer, tomas, 2021/11/12
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/12
- Re: How to read an integer from the minibuffer, tomas, 2021/11/12
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/12
- Re: How to read an integer from the minibuffer, Jean Louis, 2021/11/13
- Re: How to read an integer from the minibuffer, tomas, 2021/11/13
- Re: How to read an integer from the minibuffer, Emanuel Berg, 2021/11/16
- Re: How to read an integer from the minibuffer, Jean Louis, 2021/11/13