Re: Why there is a PG_GETARG_UINT32 and PG_RETURN_UINT32?

I am creating my own uint32 type and faced this function.
But my args are always of type my_int and one of the signed int types as
postgres doesn't hava unsigned.
Could I use those functions in operations between those types?
I can't see a place for this, I don't know if I am missing something....

On Fri, Apr 5, 2013 at 1:12 AM, Amit Kapila <amit(dot)kapila(at)huawei(dot)com> wrote:

> On Thursday, April 04, 2013 8:30 PM Rodrigo Barboza wrote:
>
> > Hi guys.
> > I am wondering when I can use the PG_GETARG_UINT32 and PG_RETURN_UINT32.
> > If postgres has no unsigned int type, what is the use of these macros?
>
> They are mainly used for contrib module functionality or some built-in
> functions which are not exposed.
> For example, bt_page_items() receives relation name (text) and block number
> (int), but internally the block number
> is unit32 as max blocks can be oxFFFFFFFE.
>
> With Regards,
> Amit Kapila.
>
>