function: gaussian-random (&optional min max)
If gaussian-random is called with a value for min and nil for max (or vice
versa), the function could enter an infinite loop.
example (gaussian-random 100 nil) almost always causes an infinite loop.
If the first call to the local function "gauss" creates a value that does
not satisify min,
then the local function "guard" enters an infinite loop because guard is
called with a value for max that is less than min.
Sincerely,
Andy Peterson
