[gameprogrammer] floating point vs fixed

Hey Guys,

I'm making a PC game that has some physics simulation stuff in it, and
we are using floating point numbers.

In retrospect I know I should have used fixed point because of the
differences in the floating point tables on different CPU's but I was
wondering if anyone knows just how significant a problem this might
be?

Are the floating point tables different enough on different CPUs to be
worried that a simulation would run substantially different on
different systems?

Any tips to curb this problem besides switching to fixed point?

TIA!
Alan

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