From: Yuri Khan <yuri.v.khan@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: percent-change
Date: Sun, 14 May 2023 21:29:48 +0700 [thread overview]
Message-ID: <CAP_d_8Wy=Z9Hd61yHqy8b0M44OxNLeWVsqdzbJd+h66B8BXBqw@mail.gmail.com> (raw)
In-Reply-To: <87zg68w73s.fsf@dataswamp.org>
On Sun, 14 May 2023 at 19:20, Emanuel Berg <incal@dataswamp.org> wrote:
> But how/why does that work if 'from' is 0?
>
> (/ 1 0 0.01) ; 1.0e+INF
>
> What does that mean?
In floating point, dividing by zero is allowed and yields +infinity,
-infinity or (quiet) not-a-number depending on the sign of the
numerator. ‘/’ knows to perform the division in floating when at least
one operand is a float, which 0.01 nicely provides. “1.0e+INF” is just
the printed representation for positive infinity.
next prev parent reply other threads:[~2023-05-14 14:29 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-11 13:35 percent-change Emanuel Berg
2023-05-13 13:37 ` percent-change Ruijie Yu via Users list for the GNU Emacs text editor
2023-05-13 14:00 ` percent-change Emanuel Berg
2023-05-13 14:06 ` percent-change Emanuel Berg
2023-05-13 15:16 ` percent-change Yuri Khan
2023-05-13 15:58 ` percent-change Emanuel Berg
2023-05-13 16:04 ` percent-change Emanuel Berg
2023-05-14 14:29 ` Yuri Khan [this message]
2023-05-15 2:54 ` percent-change Emanuel Berg
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