> This solution seems acceptable to me, but I'm curious if anyone can > shed some light on the floating point conversion: > > return static_cast<boost::int32_t>(static_cast<boost::uint32_t>(a * 20)); > > used in PIXELS_TO_TWIPS. Is there a compiler flag or something that > allows negative floating point numbers to be converted to a non-zero > unsigned int that I'm missing for my cross compile? >
It's undefined behaviour, so there's nothing you can do to be sure on any platform. I think we should be using the safe conversion all the time. bwy
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