Messages in this thread |  | | | Date | Tue, 06 Mar 2007 10:48:57 -0800 | | From | "H. Peter Anvin" <> | | Subject | Re: [RFC] div64_64 support II |
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Andi Kleen wrote: >> The problem with these algorithms that tradoff one or more >> multiplies in order to avoid a divide is that they don't >> give anything and often lose when both multiplies and >> divides are emulated in software. > > Actually on rereading this: is there really any Linux port > that emulates multiplies in software? I thought that was only > done on really small microcontrollers or smart cards; but anything > 32bit+ that runs Linux should have hardware multiply, shouldn't it?
SPARC < v8 does multiplies using an MSTEP instruction.
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