Re: [boost] [lexical_cast] Assumed internal double conversion of float?

Brian Kuhl wrote:

Where does boost::detail::lcast_get_precision<float>() come from, and why is it 9 ? Is it perhaps assuming some intermediate double conversion internally?

boost::detail::lcast_get_precision<double>() is 17, so no. My guess is that this is the precision that guarantees a perfect roundtrip.