> I'm confused now ... aren't
>
> #if(OTO_Get_Mask(Vec)=1)
This is /true/ if and only if the result *is* 1 (one)

>
> and
>
> #if(OTO_Get_Mask(Vec))
This is /false/ if and only if the result *is* 0 (zero)

>
> functionally the same?

So, not at all *unless* the result can only be zero or one.
>
>
>

Alain

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