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set_range(?Set, -Lwb, -Upb)

Lwb and Upb are the current lower and upper bounds on Set
Set
A variable or an integer list
Lwb
List of integers
Upb
List of integers

Description

Returns two sorted, duplicate-free lists of integers which represent the lower and upper bound of the set variable (or the ground set) Set. The predicate can also be used as a test for set-variables, since it fails for any other (in particular domain-less) variables.

Fail Conditions

Set is a variable, but not a set variable