[Python-ideas] Why not picoseconds?
Eric V. Smith
eric at trueblade.com
Sun Oct 15 16:08:35 EDT 2017
On 10/15/2017 3:13 PM, Stephan Houben wrote:
> Hi all,
> I propose multiples of the Planck time, 5.39 × 10 ^−44 s.
> Unlikely computers can be more accurate than that anytime soon.
> On a more serious note, I am not sure what problem was solved by
> moving from
> double to a fixed-precision format.
> I do know that it now introduced the issue of finding
> the correct base unit of the fixed-precision format.
From Victor's original message, describing the current functions using
64-bit binary floating point numbers (aka double). They lose precision:
"The problem is that Python returns time as a floatting point number
which is usually a 64-bit binary floatting number (in the IEEE 754
format). This type starts to loose nanoseconds after 104 days."
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