Sun Mar 10 13:47:16 EDT 2013

Support for truncated power series

I.e. compile-time unrolling of polynomials.  This is a partial
evaluation problem.  Where to fit it in?  There is no interface for

Evaluating polynomials is probably possible using the fold op.  It
might be good enough, since the loop count is available to the SSE
layer optimizer.

However.. for most polynomials the coefficients are known.  Should
they be inputs or constants embedded in the program?

For the latter, a special form is probably better.  Let's try that