Page 273 - ARM 64 Bit Assembly Language
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262 Chapter 8
Note that the upper seven bits are all one. We can remove six of those bits and adjust the for-
mat as follows. After removing the first leading one, the reciprocal is:
Removing another leading one changes the format to:
On the next step, the format is:
Note that we now have a “hidden” bit between the radix point and the sign bit. The hidden bit
is not actually part of the number that we store and use in the computation, but it is assumed
to be the same as the sign bit.
After three more leading ones are removed, the format is:
