[fpc-pascal] Explicit date from double format

[Jilani Khaldi]

 > Or, simpler, use DecodeDateTime function from DateUtils unit. It's 
even Delphi-compatible. I'm not sure whether it exists in FPC 1.0.x 
(even if not, it's probably
 > possible to just compile DateUtils unit sources from FPC 1.9.4 using 
FPC 1.0.10), but it exists in FPC 1.9.x for sure.
I know I can use DecodeDateTime, but I am just curious about the 
algorithm behind this conversion.

Jilani

-- 
Jilani Khaldi
Architect & Software Developer
http://jkhaldi.oltrelinux.com