Re: [Patch] acerhdf: Return temperature in milidegree

From: Andreas Mohr
Date: Tue Oct 20 2009 - 01:25:54 EST


Hi,

On Mon, Oct 19, 2009 at 11:24:47PM +0200, Peter Feuerer wrote:
> I agree with you in these points, but I have also some disadvantages to discuss:
>
> Disadvantages:
> - Thinking about the implemenation such a macro would require, users may
> get confused. They would still set the fanon / fanoff trip points in
> degree, but when they read documentation or the current temperature,
> millidegree is used. - I think "TEMP_DEGREE_TO_SYS(59)" in code is not
> as good readable as "59000"
>
> what about writing something like "59 * 1000" insead of "59000"?
>
> Or something like that:
>
> #define FACTOR_MILLIDEGREE 1000
> 59 * FACTOR_MILLIDEGREE
>
> this solution has all your listed advantages and eliminates the
> disadvantages I see in the "TEMP_DEGREE_TO_SYS" solution.

Well, yes, much better, in fact TEMP_DEGREE_TO_SYS is simple overengineering
(using a generic, _cryptic_ name in order to keep using it in the somewhat unlikely
case of having the factor change when you could just as well have mass-renamed
the couple places that use the macro name)

Andreas
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