Hi Ed,
That's great. The idiom for bitoring multiple flags has always bugged me,
and doing it at compile time is an added bonus.
Alex
On 19/01/2008, Eduardo Cavazos <[EMAIL PROTECTED]> wrote:
>
> Hello,
>
> In C, it's common to have various values that you combine via '|'. In most
> of
> the C interfacing vocabs that I've used, these values are provided via a
> simple word definition. So the question is, how do you OR them together?
> There are a few ways to go about it. After trying out a few, I finally
> settled on a macro named 'flags'. For now, it's tucked away in the obscure
> vocab 'unix.linux.ifreq'. If it becomes generally used, I'll put it in a
> better place. It's very simple to use:
>
> { S_IRUSE S_IWUSR S_IXUSR } flags
>
> I like that better than:
>
> S_IRUSE S_IWUSR bitor S_IXUSR bitor
>
> Another benefit is that the values are combined at compile time.
>
> Ed
>
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