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On 17/10/2005, at 7:46 PM, Beppe Costa wrote:
The MI reference says 1721426 but the C/MI example use 1721424
Scaliger number 1721426 equates to 0001-01-01Scaliger number 1721424 equates to 0000-12-30 (which is a nonsense date because there was no year 0--hence all the confusion with the morons who think a new century starts when the zeroes tick over). 1721424 should be a BC date but CDD converts it to 0000-12-31 when using an SAA Calendar.
Given that all dates prior to 14th October 1582 don't allow for the "missing" dates they're all wrong anyhow and that's ignoring the confusion created by different countries adopting the Gregorian calendar at different times.
#define GREGORIAN_TIMELINE_START 1721424 However it seems that both values work the same.
They both work because they are in the same time line--one is just two days earlier than the other. The earliest Scaliger number allowed in an SAA calendar is 1721060 which equates to 0000-01-01 (nonsense date, see above). Anything earlier than that results in MCH1867 with reason code 24 "No valid calendar effective date". The correct starting effective date is 1721426. The same exception occurs when specifying an ending effective date greater than 5373485.
Scaliger numbers go back to sometime in 4000BC (I think) so perhaps defining the correct calendar might cause the MI instructions to handle earlier dates but I suspect that might not be the case. What business reason is there for dealing with such early dates? Scaliger numbers also go beyond year 9999 but the 4-digit year restrictions probably scupper any attempt to use them.
Regards, Simon Coulter. -------------------------------------------------------------------- FlyByNight Software AS/400 Technical Specialists http://www.flybynight.com.au/ Phone: +61 3 9419 0175 Mobile: +61 0411 091 400 /"\ Fax: +61 3 9419 0175 \ / X ASCII Ribbon campaign against HTML E-Mail / \ --------------------------------------------------------------------
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