[Octave-bug-tracker] [bug #65219] datenum/datestr/datevec: Inconsistent behavior for '' input

[anonymous]

URL:
  <https://savannah.gnu.org/bugs/?65219>

                 Summary: datenum/datestr/datevec: Inconsistent behavior for
'' input
                   Group: GNU Octave
               Submitter: None
               Submitted: Sat 27 Jan 2024 10:15:04 AM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 8.4.0
         Discussion Lock: Any
        Operating System: Any
           Fixed Release: None
         Planned Release: None


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Follow-up Comments:


-------------------------------------------------------
Date: Sat 27 Jan 2024 10:15:04 AM UTC By: Anonymous
Expectation:
datenum(''), datestr('') and datevec('') should give the same result.
Whatever this should be, e.g. return 31-Dec--001 or 31-Dec-1899.

Observation: 
As of Octave 8.4:
datestr(datenum(''))
ans = 31-Dec-1899

datestr(datevec(''))
ans = 00-Jan-1900

datestr('')
ans = 00-Jan-1900

As of Octave 8.2: datevec('') fails with error message error: datevec: none of
the standard formats match the DATE string

Overall these tests should pass:
assert(datestr(''),datestr(datenum('')))
assert(datestr(datevec('')),datestr(datenum('')))









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