[Python-ideas] Way to check for floating point "closeness"?

Devin Jeanpierre jeanpierreda at gmail.com
Tue Jan 13 00:51:31 CET 2015


On Mon, Jan 12, 2015 at 3:48 PM, Devin Jeanpierre
<jeanpierreda at gmail.com> wrote:
> On Mon, Jan 12, 2015 at 3:34 PM, Chris Barker <chris.barker at noaa.gov> wrote:
>> And I hate to bring this up, but any reason for a cmath.nan and cmath.inf ?
>
> One constant would be weird. cmath has more than one or two infinitely
> far away points, it has eight. (Maybe nan is more obviously nan+nanj
> though.)

Er, it has infinitely many, of course. I didn't think that through. :)

-- Devin

> Tangent: This bothered me for like three seconds. The complex plane
> conventionally has only one point at infinity. I guess that would be
> useless for knowing how you overflowed, though.
>
> -- Devin


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