> > What is going on here? I thought the value is already in two's
> > complement... Is the above equivalent of
> >
> > if (value < 0)
> > value = -value;
> >
> > ? If so, why? If not, can you add a comment?
>
> Right, then, will use this instead:
>
> static int get_battery_current(void)
> {
> s16 value;
>
> value = (ec_read(REG_BAT_CURRENT_HIGH) << 8) |
> (ec_read(REG_BAT_CURRENT_LOW));
>
> return abs(value);
> }
That's certainly better. But... why not return signed value? Current
flowing from the battery is certainly very different from current
flowing into it...
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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