Am 05.05.2014 01:08, schrieb Heiko Oberdiek:
> Improved version with higher precision:
>
>    \cs_new:Npn \__dim_strip_bp:n #1
>      {
>        \__dim_strip_pt:n
>          {
>            \__dim_eval:w ( #1 ) * 800 / 803 \__dim_eval_end:
>          }
>      }
>
> * 800/803 is the integer fraction for 72/72.27


perhaps I'm completely off the mark, but isn't this introducing a 
restriction on the values that can be entered? (ie generating an 
overflow by doing *800 first)

frank