Now I’m writing the parser/reader for wk4-files (Lotus 1-2-3 workbooks)
There are a few BIFF-records for numbers in 10 bytes (GNU long double). I spent a few days to understand what kind of encoding used there. And today in Google I found the information – this is standard number of Extended type in Delphi/Pascal
So now this part of parser is completed succefully:-)