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?Expr1 #< ?Expr2
The integer value of Expr1 is less than the integer value of Expr2.
- Expr1
- An integer arithmetic expression
- Expr2
- An integer arithmetic expression
Description
   Suspends until both Expr1 and Expr2 are ground, and then both arguments
   are evaluated and compared, succeeding iff they are both integers and 
   Expr1 is less than Expr2.
Modules
This predicate is sensitive to its module context (tool predicate, see @/2).
Fail Conditions
   fails if the value of Expr1 is not less than the value of Expr2, or if either do not evaluate to an integer.
Exceptions
- (24) number expected 
- Expr1 or Expr2 is not an arithmetic expression.
See Also
#< / 3, fd : #< / 2, ic : #< / 2