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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