5. Procedures
f
The argument in this place must be a function of one or more arguments,
*returning exactly one value*

5.1. Constructors
(vector-unfold f length initial-seed ...) -> vector
... applying f at each iteration to the current index and current seeds,
in that order, *to receive n + 1 values*
--
	--Per Bothner
xxxxxx@bothner.com   http://per.bothner.com/