(>= ?X 0)
(=> (Nonnegative-Integer ?X) (>= ?X 0)) (=> (Float-Digits $X $Y) (Nonnegative-Integer $Y)) (=> (Float-Precision $X $Y) (Nonnegative-Integer $Y)) (=> (Integer-Length $X $Y) (Nonnegative-Integer $Y)) (=> (Isqrt $X $Y) (Nonnegative-Integer $Y))