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Re: percent-change
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From: |
Yuri Khan |
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Subject: |
Re: percent-change |
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Date: |
Sun, 14 May 2023 21:29:48 +0700 |
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.