interfacing C bitfield structs

[Anders F Björklund]

Walter Bright wrote:

> Add two member functions for each:
> 
>     bool fBinary() { return BITS & 1; }
>     bool fBinary(bool b) { BITS |= b; return b; }
> 
>     bool fParity() { return (BITS & 2) != 0; }
>     bool fParity(bool b) { BITS |= b << 1; return b; }
> 
> and then, because functions work like properties, you can use them as if 
> they were properties. 

You'll need to add some casts, though, for GDC:

"cannot implicitly convert expression (BITS & 1) of type uint to bit"

Or just change it to: return ((BITS & 1) != 0);

--anders