NAME
        Date2Amiga -- calculate seconds from 01-Jan-1978. (V36)
   SYNOPSIS
        seconds = Date2Amiga(date);
        D0                   A0
        ULONG Date2Amiga(struct clockdata *);
   FUNCTION
        Calculates the number of seconds from 01-Jan-1978 to the date
        specified in the clockdata structure.
   INPUTS
        date - pointer to a clockdata structure containing the date of
               interest.
   RESULTS
        seconds - the number of seconds from 01-Jan-1978 to the date specified.
   WARNING
        This function does no sanity checking of the data in the clockdata
        structure.
   SEE ALSO
        amiga2date(), checkdate()