Messages in this thread | | | Date | Sun, 04 Jan 2009 12:39:36 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 1/3]: Replace kernel/timeconst.pl with kernel/timeconst.sh |
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Rob Landley wrote: > > C) The only calculation which can overflow 64 bits (the ADJ32 one) turns out > not to need arbitrary precision math, just 72 bits, and if it ever uses more > than 32 then bottom 32 are all zero before the divide so you can do it in > three lines. >
... for the current code (32 bits). When we get an overflow-less 64-bit implementation, this code will have to be redone, which is not true for a properly done implementation.
-hpa
-- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.
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