CDS-ISIS in the Year 2000

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Will ISIS stop working in the year 2000?

Several members of the CDS-ISIS discussion list have asked this question. Here are two clear answers!

• NO! ISIS as such is not going to stop working in the year 2000 (as far as I know it may continue working for the next few billenniums!).
• However, applications using the datestamp to store this data into a record and relying on computations to deliver results based on this value may have to be revised.

Giampaolo Del Bigio

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Dear list members:
The problem of the year 2000 seems to be strongly exaggerated. It can be easily solved with the current form of DATESTAMP function. We use several years the following simple TRUEDATE procedure in our ISIS applications:

  Procedure TRUEDATE;
    Begin
      LN:=DATESTAMP;
      if (substr(LN,7,2)) < '81' then
            NEWDATE:='20'|substr(LN,7,2)|substr(LN,1,2)|substr(LN,4,2)
      else  NEWDATE:='19'|substr(LN,7,2)|substr(LN,1,2)|substr(LN,4,2);
    End;

... and the NEWDATE variable keeps the current date in the form: YYYYMMDD now and after the year 1999. Perhaps it can help the worried list members.
Best regards;
Emil Moncman

Wageningen Digital Library, 23 April, 1998