Simplification of products and the number 0



  I have not checked, but I suspect the algorithm for simplifying a 
product with zero in it
simply takes the terms as they occur and when it encounters 0 or 0.0 or 
0.0b0, it
returns that answer discarding, unexamined, the rest of the terms.  
Doing anything
else would take potentially much more time.

Left unresolved is whether

0 * 1.0  is 0.0   or 0.

0.0 * 1   etc...

RJF