Sets the birthdate.
edf_set_birthdate(edf_handle, birthdate_year, birthdate_month, birthdate_day)
: integer containing file handle of the opened bdf/edf-file
: 1800 - 3000. .
: 1 - 12. .
: 1 - 31. .
This function is optional and can be called only after opening a file in writemode and before the first sample write action.