share -- create a unique data
representation
Introductionshare() creates a unique data
representation for every MuPAD object. This function serves a
highly technical purpose. Usually, there should be no need for a user
to call this function.
Call(s)share()
Returnsthe void object of type DOM_NULL.
Related
Functions
Detailsshare is executed, a unique data representation is
created for every MuPAD object before the next command is
executed on the interactive level. This means that every MuPAD
object is only located once in the physical memory. Thus,
share reduces the number of logical
bytes used in a MuPAD session.share is a very time consuming function which also
needs a lot of memory during its execution.share is not executed immediately; it is only executed
on returning to the interactive level. Therefore, it cannot be used in
procedures to release memory during a longer computation.share is a function of the system kernel.
Example
1The following example was carried out in a fresh
MuPAD session. One sees that share reduces the
number of logical bytes. However, one observes
that the kernel needs some extra physical memory for executing the
share call. The output of the example will differ on
different machines:
>> int(x, x): bytes()
1980600, 2191872, 2147483647
>> share(): bytes()
1201076, 2830848, 2147483647