[ library(fd) | Reference Manual | Alphabetic Index ]
?X ## ?Y
X is different from Y.
- ?X
- A linear term.
- ?Y
- A linear term.
Description
   This constraints states that the two linear terms are not equal.  It is
   suspended until at most one variable appears in it and then its domain
   is updated so that the constraint is satisfied.
Fail Conditions
   The constraint does not hold if X=Y.
Resatisfiable
   No.
See Also
:: / 2, #:: / 2, #= / 2