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On 2017-Jan-25 (Wed) at 13:29 (+0000), Gabríel Arthúr Pétursson wrote:

>> The os.clock function uses the 'clock' system call. On that particular
>> system you refer to, `clock_t`, the return value of clock, is defined
>> as a 32-bit integer.
>> What you're seeing is that integer wrapping around due to overflow.


   Thanks for your very prompt and clear explanation
   ( even if it's disappointingly reasonable! ).

   It's a little surprising that the upper limit for 'os.clock( )'
   is so small, at least on a 32-bit computer.  But good to know.


Joseph Manning / Computer Science / UCC Cork Ireland /