On Friday, April 05, 2013 10:00 AM Rodrigo Barboza wrote: > 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?
It should not be a problem if your signed type doesn't have any negative value. > 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.kap...@huawei.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. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
