[Greg McKaskle]

Not to beat a dead horse, but if I recall, the singles are loaded into the registers as doubles. That doesn't mean adding 32 zeroes on the end, but it means changing a (23+1,8,1) format into a (52+1,12,1). This means that the base two exponent uses 12 bits rather than 8, and the mantissa is 52 with 1 implicit bit instead of 23 bits. Both formats are described by the IEEE 754 format -- a pretty fascinating read.

Greg McKaskle