Weird numbers: Difference between revisions

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     # returns TRUE if n with divisors divs, is semiperfect, FALSE otherwise #
     PROC semiperfect = ( INT n, []INT divs, INT lb, ub )BOOL:
-         IF   ( ub - lb ) <= -1
+         IF   ub < lb
          THEN FALSE
          ELIF INT h = divs[ lb ];