[issue11457] Expose nanosecond precision from system calls

[Larry Hastings]

Larry Hastings <larry at hastings.org> added the comment:

> To support higher resolution
> will need to supply 3 fields in st_xtimesuperspec: tv_sec and tv_nsec
> packed in st_xtimespec (say tv_timespec) and new tv_psec field.
> st_xtime will now be   st_xtimesuperspec.tv_timespec.tv_sec and
> st_xtimespec will be a new macro expanding to
> st_xtimesuperspec.tv_timespec.

How is this superior to using either Decimal or float128?

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<http://bugs.python.org/issue11457>
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