[Octave-bug-tracker] [bug #52858] Consider using C gnulib clock_gettime() for Octave cputime()

[Mike Miller]

Follow-up Comment #6, bug #52858 (project octave):

You're right. Dan's original issue is about using clock_gettime to provide
cputime (process elapsed time) with nanosecond resolution. I interjected to
comment that I would also like to use clock_gettime so that functions like
time, clock, and now would also report nanosecond resolution. The
clock_gettime function can do both wall clock time and process time, but it's
not portable.

However this is done at the system level, it will also require API changes to
octave::sys::base_tm, octave::sys::cpu_time, etc, in the oct-time.h header
file to store nanoseconds.

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