[Boost-users] [karma] auto_ + default floating point precisions

Hi all - I'm using boost karma to generically generate strings from many different types use auto_. I've noticed that if I specify some double precision numbers like 1.123456, I will only get "1.123" out as a string. While looking around the documentation, it seems that it is possible to specify the precision up to numeric_limits<real>::digits10 + 1. I couldn't find an example for how to do this with double_ let alone auto_. Can anyone point me in the right direction? Is there documentation that google couldn't find for me? Thanks, Brian