Provides the number of elapsed milliseconds since an arbitrary reference time
in the past. The reference time will be the same for a given session, but may
differ between sessions.
Usage
mclock()
Arguments
Value
A double.
Details
A convenience function for building concurrent applications. The resolution
of the clock depends on the underlying system timing facilities and may not
be particularly fine-grained. This utility should however be faster than
using Sys.time().