vadd and vsub expect 3d or 4d vectors, but they only work for 3d vectors (vadd (vector 1 2 3 4) (vector 1 2 3 4)) #(2.0 4.0 6.0)
(vsub (vector 1 2 3 4) (vector 1 2 3 0)) #(0.0 0.0 0.0) i know that there is a savannah task to improve vadd to expect more than 2 arguments, and it would be also nice if it worked for other vector sizes than 3 or 4 as well. best, gabor
