Re: If boolean vs. If not boolean

[Jon Paris <jon.paris@xxxxxxxxxxxxxx>]

Most hardware can perform both equality and inequality branches so I see no reason why the second needs to generate anything more.  But as you say - who cares - Well Glenn apparently but ...


On 2013-10-04, at 6:38 PM, Alan Campin <alan0307d@xxxxxxxxx> wrote:

> If you mean machine instructions, the second would generate more to reverse
> the value of logical true or false I would think.
>
> Why would it matter? A couple of nanoseconds.
>
>
>
>
> On Fri, Oct 4, 2013 at 3:25 PM, Glenn Gundermann <ggundermann@xxxxxx> wrote:
>
> > Hi gurus,
> >
> > Forgive the trivialness of this question but I am wondering if you smart
> > folks can answer this.
> >
> > Compare these two statements:
> >
> > If booleanVar;
> > If not booleanVar;
> >
> > Do both of these take the exact same number of internal instructions for
> > the test or does the second statement take an extra step?
> >
> > Thanks.
> >
> > Glenn Gundermann
> >
> >
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Jon Paris

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