Represent and return zero as 0E0, not 0E1. The old POD said "A zero is
represented and returned as 0E1, not 0E0 (after Knuth)." I find no
references to Knuth ever having said this. The closest reference I can find
is that Knuth says 00 should be defined to be 1, not 0, but that is
something else than 0e0, which is 0*100. I have yet to see any other
mathematical software that represents and returns zero as 0e1 rather than
0e0.Required version of Test::More is 0.9301.