* Slashes inserted into Common Lisp code evaluation results
@ 2023-05-02 6:18 Nathan Van Ymeren
2023-05-02 10:52 ` gerard.vermeulen
0 siblings, 1 reply; 5+ messages in thread
From: Nathan Van Ymeren @ 2023-05-02 6:18 UTC (permalink / raw)
To: emacs-orgmode
Hi all,
For my studies I’ve been using org as a superior form of jupyter notebook, and I do my assignments and whatnot using code blocks for computation. My preferred language these days is Common Lisp, using the SBCL implementation. Whereas languages like python default to using IEEE double-width floats, in Common Lisp the default type for a value like “1.0872” is a single-width float which sometimes introduces precision errors when computing many decimal places.
In Common Lisp (and probably in elisp too, but I don’t speak that dialect so idk) you can specify that a number should use double-precision floats by appending “d0” to the end, so for example 1.0872d0.
Here’s my problem:
When I specify double width floats, they appear with slashes embedded in the RESULTS blocks, like so:
#+begin_src lisp
(+ 1 0.0002d0)
#+end_src
#+RESULTS:
: 1\.0002d0
Compare that to a single-precision float:
#+begin_src lisp
(+ 1 0.0002)
#+end_src
#+RESULTS:
: 1.0002
What I’d like to make clear at this point is that *this is not how things look in the lisp interpreter*. For example here’s a transcript of me doing this same thing, but not in org:
CL-USER> (+ 1 0.0002d0)
1.0002d0 (100.02d0%)
CL-USER> (+ 1 0.0002)
1.0002 (100.020004%)
CL-USER>
You can see there’s no slash being emitted, so something in the plumbing between SBCL and org is inserting the slash. I’m running org version 9.7_pre built from straight.el on an M-series MacBook Pro, though the same behaviour was present in the 9.x release I upgraded from.
Is this a bug? If not, how do I suppress this behaviour?
Nate
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Slashes inserted into Common Lisp code evaluation results
2023-05-02 6:18 Slashes inserted into Common Lisp code evaluation results Nathan Van Ymeren
@ 2023-05-02 10:52 ` gerard.vermeulen
2023-05-03 6:00 ` Nathan Van Ymeren
0 siblings, 1 reply; 5+ messages in thread
From: gerard.vermeulen @ 2023-05-02 10:52 UTC (permalink / raw)
To: Nathan Van Ymeren
Cc: emacs-orgmode, emacs-orgmode-bounces+gerard.vermeulen=posteo.net
On 02.05.2023 08:18, Nathan Van Ymeren wrote:
> When I specify double width floats, they appear with slashes embedded
> in the RESULTS blocks, like so:
>
> #+begin_src lisp
> (+ 1 0.0002d0)
> #+end_src
>
> #+RESULTS:
> : 1\.0002d0
[...]
> Is this a bug? If not, how do I suppress this behaviour?
>
Do you use SLIME?
I use SLY on a recent emacs-29.0.90 build with a recent org-9.7pre.
My result is (without the escaped dot):
#+begin_src lisp
(+ 1 0.0002d0)
#+end_src
#+RESULTS:
: 1.0002d0
But I needed also to patch ob-lisp, see:
https://list.orgmode.org/480536eb12bf49144384f4b1a85d8bdf@posteo.net/
In my opinion, SLY is friendlier out of the box than SLIME.
Regards -- Gerard
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Slashes inserted into Common Lisp code evaluation results
2023-05-02 10:52 ` gerard.vermeulen
@ 2023-05-03 6:00 ` Nathan Van Ymeren
2023-05-03 7:14 ` gerard.vermeulen
0 siblings, 1 reply; 5+ messages in thread
From: Nathan Van Ymeren @ 2023-05-03 6:00 UTC (permalink / raw)
To: emacs-orgmode
Ahh, I forgot to specify. I too use Sly in lieu of Slime, though I'm on emacs 28. That patch does not appear to have made its way into the prerelease I’m running. I will apply it manually later this evening and see how it goes.
Thanks,
N
May 2, 2023 03:52:52 gerard.vermeulen@posteo.net:
>
>
> On 02.05.2023 08:18, Nathan Van Ymeren wrote:
>> When I specify double width floats, they appear with slashes embedded
>> in the RESULTS blocks, like so:
>> #+begin_src lisp
>> (+ 1 0.0002d0)
>> #+end_src
>> #+RESULTS:
>> : 1\.0002d0
> [...]
>> Is this a bug? If not, how do I suppress this behaviour?
>>
> Do you use SLIME?
> I use SLY on a recent emacs-29.0.90 build with a recent org-9.7pre.
> My result is (without the escaped dot):
>
> #+begin_src lisp
> (+ 1 0.0002d0)
> #+end_src
>
> #+RESULTS:
> : 1.0002d0
>
> But I needed also to patch ob-lisp, see:
> https://list.orgmode.org/480536eb12bf49144384f4b1a85d8bdf@posteo.net/
>
> In my opinion, SLY is friendlier out of the box than SLIME.
>
> Regards -- Gerard
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Slashes inserted into Common Lisp code evaluation results
2023-05-03 6:00 ` Nathan Van Ymeren
@ 2023-05-03 7:14 ` gerard.vermeulen
2023-05-03 7:45 ` Ihor Radchenko
0 siblings, 1 reply; 5+ messages in thread
From: gerard.vermeulen @ 2023-05-03 7:14 UTC (permalink / raw)
To: Nathan Van Ymeren
Cc: emacs-orgmode, emacs-orgmode-bounces+gerard.vermeulen=posteo.net
Igor, merged the patch yesterday with the bugfix branch.
It is now in https://elpa.gnu.org/devel/org-9.7pre0.20230502.124756.tar
or later.
It should not matter whether you are using Emacs-28 or Emacs-29.
Regards -- Gerard
On 03.05.2023 08:00, Nathan Van Ymeren wrote:
> Ahh, I forgot to specify. I too use Sly in lieu of Slime, though I'm
> on emacs 28. That patch does not appear to have made its way into the
> prerelease I’m running. I will apply it manually later this evening
> and see how it goes.
>
> Thanks,
>
> N
>
> May 2, 2023 03:52:52 gerard.vermeulen@posteo.net:
>
>>
>>
>> On 02.05.2023 08:18, Nathan Van Ymeren wrote:
>>> When I specify double width floats, they appear with slashes embedded
>>> in the RESULTS blocks, like so:
>>> #+begin_src lisp
>>> (+ 1 0.0002d0)
>>> #+end_src
>>> #+RESULTS:
>>> : 1\.0002d0
>> [...]
>>> Is this a bug? If not, how do I suppress this behaviour?
>>>
>> Do you use SLIME?
>> I use SLY on a recent emacs-29.0.90 build with a recent org-9.7pre.
>> My result is (without the escaped dot):
>>
>> #+begin_src lisp
>> (+ 1 0.0002d0)
>> #+end_src
>>
>> #+RESULTS:
>> : 1.0002d0
>>
>> But I needed also to patch ob-lisp, see:
>> https://list.orgmode.org/480536eb12bf49144384f4b1a85d8bdf@posteo.net/
>>
>> In my opinion, SLY is friendlier out of the box than SLIME.
>>
>> Regards -- Gerard
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2023-05-03 7:44 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2023-05-02 6:18 Slashes inserted into Common Lisp code evaluation results Nathan Van Ymeren
2023-05-02 10:52 ` gerard.vermeulen
2023-05-03 6:00 ` Nathan Van Ymeren
2023-05-03 7:14 ` gerard.vermeulen
2023-05-03 7:45 ` Ihor Radchenko
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