On 2015-01-23 10:33 AM, Clive D.W. Feather wrote:
Steffen Nurpmeso said:
|> Well. PHK follows the IERS format which uses the 1st of the month
|> after the leap second, i.e., the second after the leap occurred.
|
|This is an implementation detail. PHK???s choice is as good as the other.
And i disagree with that. The ISO C(99) standard doesn't offer
a JDN-TO-Gregorian and vice versa calculation. There is the
well-known algorithm from Communications of the ACM, Vol 6, No 8,
but it is not in the standard.
Irrelevant. The C Standard, in general, holds only those facilities which
either can't be expressed in terms of the Standard language itself
(e.g. printf) or which are extremely common and therefore benefit from
having a standard name (e.g. strcpy).
Converting JDN to Gregorian fits into neither of these categories, so it
does not belong in the C Standard.
So in order to calculate the
actual date where the drift adjustment occurs you have to face
a very elaborate conversion.
No, you need to use a library that's already been written to do the job.
Takes 10 seconds or so.
What "library that's already been written to do the job" are you
referring to, specifically?
-Brooks
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