> Not really.  FLD with a 32-bit real operand is 20 clocks, as opposed to
the
> 64-bit version at 25 clocks.  FST is 44 vs. 45 clocks.  FMUL is 27-35
clocks
> for a float, or 32-57 for a double.  FDIV is 89 or 94.  So floats are
faster,
> under ideal conditions, but not by any significant amount.  (This data is
for
> the 386.  Other processors vary, of course.  Intel no longer seems to
publish
> this data, for the obvious reason that pipelining and other optimizations
> make it useless.)

But if you want to look anyway, I think Ralf Brown's Interrupt List
(http://www.pobox.com/~ralf) has the data.

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