Subject: bug#33765: emacs-26.1-mac-7.4; (expt 2 140) ; produces 0 in scratch buffer, unexpectedly

From: Eli Zaretskii <[email-masked]>
Date: Sun, 16 Dec 2018 09:29:09 +0200

On December 16, 2018 8:24:18 AM GMT+02:00, Van L <[email-masked]> wrote:
> Hello,
> 
> I was pushed to by reading the following to report this bug.
> 
> ┌────
> │ In this business we speak the language of mathematics
> │
> https://www.washingtonpost.com/local/obituaries/evelyn-berezin-entrepreneur-and-engineer-who-designed-early-word-processor-dies-at-93/2018/12/13/20af4524-fee7-11e8-ad40-cdfd0e0dd65a_story.html
> └────
> 
> 
> - ------------------------------------------------------------------
> 
> #+NAME: unexpected-result-in-scratch-buffer
> #+BEGIN_SRC emacs-lisp
> (expt 2 140) ; unexpected result is 0
> #+END_SRC
> 
> - ------------------------------------------------------------------
> 
> #+NAME: result-for-comparison
> 
>       Chez Scheme Version 9.5
>       Copyright 1984-2017 Cisco Systems, Inc.
> 
>       > (expt 2 140)
>       1393796574908163946345982392040522594123776
>       

Why do you say this is unexpected?

If you want the same support for huge numbers as in Scheme, try Emacs 27.