> check-= wants single value but unfortunately my values are wrapped in set of > vectors.
Oh I didn't notice that. In that case you could define your own check -- that looks inside the sets and vectors to do the approximate equality test -- using the second variant of `define-binary-check` as described here: http://docs.racket-lang.org/rackunit/api.html#%28form._%28%28lib._rackunit%2Fmain..rkt%29._define-binary-check%29%29 ____________________ Racket Users list: http://lists.racket-lang.org/users

