[computer-go] re: fixed point vs floating point

[Dave Dyer <ddyer@xxxxxxxxxxx>]

In graphics processing, it used to be common to use fixed point
rather than floating point, and very significant speedups could
be achieved by doing so.

These days, it's not worth the trouble.  The speedups are minor
at best, and the extra effort is a very significant cost.

If a program which does nothing else but crunch numbers no longer 
benefits from fixed point hacking, it's hard to see how a Go
program can.

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