Per my other comment, SBCL's defaults still cause (= (- (+ 0.1 0.2) 0.3) 0) → T....

yellowapple on April 15, 2020 | parent | context | favorite | on: Ask HN: How to rediscover the joy of programming?

Per my other comment, SBCL's defaults still cause (= (- (+ 0.1 0.2) 0.3) 0) → T. I guess they're technically floats (or at the very least not rationals) given that (= 0.3 3/10) → NIL.