TYPEMAP
sqlrconnection *	O_OBJECT
sqlrcursor *		O_OBJECT
const char *		T_PV
uint16_t		T_UV
uint32_t		T_UV
uint64_t		T_UV
int16_t			T_IV
int32_t			T_IV
int64_t			T_IV
bool			T_IV

INPUT
T_IV
	$var=($ntype)SvIV($arg)
T_UV
	$var=($ntype)SvUV($arg)

OUTPUT
T_IV
	sv_setiv($arg, (IV)$var);
T_UV
	sv_setuv($arg, (IV)$var);
