[Changeset]: Add some single precision test code..

[John W. Eaton]

On 28-May-2008, David Bateman wrote:

| Ok, here is my first step at adding single precision test code.. This
| going to take a while to add it all, but already this has been
| profitable as I found some bugs that are also addressed in this patch.

I applied this changeset.

Thanks,

jwe