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Re: [using gcc book] 5.20 double-word integers
On Tue, 26 Aug 2003, Gabriel Paubert wrote:
> On Sat, Aug 23, 2003 at 09:33:34PM -0400, Chris Devers wrote:
> > Hello again,
> > In chapter five, section 5.9 (Double-Word Integers) of the _Using GCC_
> > book, we have the following sentence:
> > Multiplication is open-coded if the machine supports
> > fullword-to-doubleword a widening multiply instruction.
> > I feel this would read more clearly if written as follows:
> > Multiplication is open-coded if the machine supports a
> > widening fullword-to-doubleword multiply instruction.
> Warning: nitpicking ahead.
> On PPC32 at least, there is no widening multiply instruction, but
> there is a multiply high instruction which allows to easily compute
> all the necessary terms and is used for that purpose.
Do you feel this warrants a change in phrasing? Was the original version
any more accurate? The sentence is already written in terms of a caveat
("...foo if bar..."); are you saying that this caveat should be further
qualified for PPC32 (etc?) targets?
Suggested rephrasings are welcome.
Chris Devers firstname.lastname@example.org
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