Messages in this thread | | | Subject | Re: [RFC] div64_64 support | From | Andi Kleen <> | Date | 03 Mar 2007 03:31:52 +0100 |
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Stephen Hemminger <shemminger@linux-foundation.org> writes:
> Here is another way to handle the 64 bit divide case. > It allows full 64 bit divide by adding the support routine > GCC needs.
Not supplying that was intentional by Linus so that people think twice (or more often) before they using such expensive operations. A plain / looks too innocent.
Is it really needed by CUBIC anyways? It uses it for getting the cubic root, but the algorithm recommended by Hacker's Delight (great book) doesn't use any divisions at all. Probably better to use a better algorithm without divisions.
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