Just for the record, I put the program, which simply cycles through a
set of complex values and the four arithmetic operations +, -, *, /,  at

http://www.math.purdue.edu/~lucier/scheme/srfi-77/complex-test.scm

and the results from Gambit at

http://www.math.purdue.edu/~lucier/scheme/srfi-77/results-gambit.gz

Perhaps someone can tell me why I'm getting results that I consider
to be nonsense from the "will" implementation in scheme-48.  (Of
course, one way to do this is to show that my expectations are
nonsense, if that is what's really happening here ...)

Brad