Eero Tamminen wrote:
Is there any performance penalty if this switch is done often?
Why you would switch it off?
Operations on "fast floats" aren't IEEE compatible, but as far as
I've understood, they should differ only for numbers that are very close
to zero, close enough that repeating your algorithm few more times would
produce divide by zero even with IEEE semantics (i.e. if "fast float"
causes you issues, it's indicating that there's most likely some issue
in your algorithm).
Ok, I thought the precision loss would be more noticeable, but as we are
talking about latitude and longitude (and anyway the GPS accuracy is not
so great), I guess I don't have any need to turn it off.
Anyway, I'm doing some benchmarks, I'll post the results soon.
--
http://www.mardy.it <- geek in un lingua international!
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