Can someone recommend a library that contains a function comparing doubles for equality?
This clojure cookbook has a section on comparing floating-point numbers. http://www.gettingclojure.com/cookbook:numbers This blog post makes me want to find an implementation by someone who has more experience in these matters. Thanks. http://randomascii.wordpress.com/2012/02/25/comparing-floating-point-numbers-2012-edition/ There is no silver bullet. You have to choose wisely. - If you are comparing against zero, then relative epsilons and ULPs based comparisons are usually meaningless. You’ll need to use an absolute epsilon, whose value might be some small multiple of FLT_EPSILON and the inputs to your calculation. Maybe. - If you are comparing against a non-zero number then relative epsilons or ULPs based comparisons are probably what you want. You’ll probably want some small multiple of FLT_EPSILON for your relative epsilon, or some small number of ULPs. An absolute epsilon could be used if you knew exactly what number you were comparing against. - If you are comparing two arbitrary numbers that could be zero or non-zero then you need the kitchen sink. Good luck and God speed. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
