[Python-Dev] PEP 410 (Decimal timestamp): the implementation is ready for a review (original) (raw)

Antoine Pitrou solipsis at pitrou.net
Wed Feb 15 19:10:13 CET 2012


Le mercredi 15 février 2012 à 18:58 +0100, Victor Stinner a écrit :

It gives me differences smaller than 1000 ns on Ubuntu 11.10 and a Intel Core i5 @ 3.33GHz:

$ ./a.out 0 s, 781 ns $ ./a.out 0 s, 785 ns $ ./a.out 0 s, 798 ns $ ./a.out 0 s, 818 ns $ ./a.out 0 s, 270 ns

What is it supposed to prove exactly? There is a difference between being able to represent nanoseconds and being able to measure them; let alone give a precise meaning to them.

(and ironically, floating-point numbers are precise enough to represent these numbers unambiguously)

Regards

Antoine.



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