On Sep 4, 2007, at 9:58 AM, Paul Gilmartin wrote:
On Tue, 4 Sep 2007 09:44:55 -0400, Craddock, Chris wrote:
Don't forget that the 8 byte TOD is unsigned, so bit zero is part
of the
value, not the sign. You will need to use the subtract logical
form to
get the right answer without playing bit-shifting games, even in a 64
bit register.
o The sign bit of the TOD last changed in 1971; it next changes in
2042.
Within the interior of that interval, either the logical or the
algebraic form works.
Gil,
You bring up an interesting question (to me). I wonder if anyone did
during the Y2K testing try a date later that 2042.
Ed
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