Tom Lane wrote:
"Heikki Linnakangas" <[EMAIL PROTECTED]> writes:
Looking closer, I don't understand how that change was supposed to do
anything.
The point of that patch is to avoid an off-by-one result for years BC.
The direction of rounding in integer division with a negative numerator
is undefined in C (or at least used to be --- did C99 tighten this up?).
Oh, I see. In that case we're good. The corresponding new code in tzcode
actually looks like this:
! static int
! leaps_thru_end_of(const int y)
! {
! return (y >= 0) ? (y / 4 - y / 100 + y / 400) :
! -(leaps_thru_end_of(-(y + 1)) + 1);
! }
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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