Mailing List Archive

OT: float vs. int analogy for IPv6 vs. IPv4 (was: Updated anti-BOTH AND argument list)
wayne wrote:

> That sounds like a problem with integers not floating point.
> Yes, YYYYmmDDHHMMSS is too large for a 32-bit integer.

It's an old PHP issue, the mod operator in Wikimedia's #expr
only inherited it.

> I no longer have my copy of IEEE 754 handy to quote, but
> 17 digits is enough for any IEEE 754 complaint system to
> accurately create a double precision rounded correctly to
> the bottom bit and vice versa. Either you are working with
> a non-complaint system, or

...or I confused float and double and long double ;-) In...
<http://meta.wikimedia.org/wiki/Help:Calculation#Accuracy>
...it's still correct, with the relevant links to
<http://en.wikipedia.org/wiki/en:Machine_epsilon> and
<http://www.math.byu.edu/~schow/work/IEEEFloatingPoint.htm>

Sorry for the confusion.

Frank


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