[boost] Floating point truncation bug in qi::float_

Hi I am using boost 1.4.1 Spirit::Qi. I think we have a floating point truncation bug in the qi::float_ parser. I attached a simple program to repro the bug. Below are some examples of an input floating point gets truncated (=>) by the qi::float_: 12312321421421 => 12312321720320.000000 123123214 => 123123216.000000 123233.4124 => 123233.406250 I don't see the same issue with the qi::double_. Wondering if this is a known issue? Regards, HTan