(check (= (neg 1.5) -1.5))
(check (= (+ 1.5 9.2) 10.7))
(check (= (/ 12.5 2.0) 6.25))
(check (< 1.5 9.2))
(check (>= 9.2 1.5))
(check (= (^ 9.0 2.5) 243.0))
(fail (check (= (^ 4.0 2.5) 31.99)))
(fail (check (< 9.2 1.5)))
(fail (check (= (+ 1.5 9.2) 10.6)))
(check (= (to-f64 1) 1.0))
(check (= (to-i64 1.0) 1))
(check (= (to-string 1.2) "1.2"))
(check (= (to-string 1.0) "1.0"))