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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
(" if bar..."); are you saying that this caveat should be further
qualified for PPC32 (etc?) targets?

Suggested rephrasings are welcome.

Chris Devers

trash can, n.
(GUI) An iconized disposal device designed to facilitate the accidental
deletion of essential files. See also ICON; GARBAGE; MOUSE; BIN.

    -- from _The Computer Contradictionary_, Stan Kelly-Bootle, 1995

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