Some months ago I posted code that implemented functions for accessing
variables as bit-arrays.
At that time somebody had a problem much like yours.

Perhaps you can find the original thread in the archives.

Best regards,

Isaac


Justin Richards escreveu:
> Thanks Bob,
>
> struggling to understand here but I guess would use it like
>
> if (bitof(days.day,tm_wday))
> {
>     do something
> }
>
> and if tm_wday =3D 1 (monday)
>
> it expand to
>
> if(((bitv *)&(days.day))->b1)
>
> and now I am lost.  What is bitv and how can I break it down further.
>
> Cheers Justin
> 2009/11/25 Bob Blick <bobblick@ftml.net>
>
>   =

>> You might be able to use this to help you access bits:
>>
>> #define _paste(a,b)         a##b
>> #define bitof(var,num)      (((bitv *)&(var))->_paste(b,num))
>>
>> Cheers,
>>
>> Bob
>>
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