darkblu said:
Fair cop Gov, been a while since I've used it. I certainly don't remember it affected FMUL but the IA manual must be right (I was mainly concerned with speed last time I looked it up).
Still it doesn't affect all operations so you have to guarentee your compiler doesn't decide to use some other operation. That and a few other minor points mean its not as helpful as the manual would suggest for numerical operations.