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 = 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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