OpenEuphoria

Re: How to catch integer 64 bit return variable type

• Posted by Juergen Luethje <j.lue at gmx.de> Jun 08, 2007
• 601 views

ChrisBurch2 wrote:

> Juergen Luethje wrote:
> > 
> > D. Darmawan wrote:
> > 
> > > Thanks your quick response Juergen,
> > > 
> > > I try to make my expectation more understandable.
> > > Assume that C function in API library is like this:
> > > 
> > > }}}
<eucode>
> > > long long int desired_function(any_struct_value*);
> > > </eucode>
{{{

> > > that will return any 64 bit integer value.
> > > 
> > > Then I link and call that C function in my Eu code:
> > > 
> > > }}}
<eucode>
> > > myAPIfunc = define_c_func(myDLL, "desired_function", {C_POINTER}, C_LONG)
> > > 
> > > x = c_func(myAPIfunc, {lpMyVar1})
> > > </eucode>
{{{
 
> > > 
> > > Now, my question is: 
> > > How to catch the 64bit integer return value from myAPIfunc and assign it
> > > into
> > > 'x' variable???
> > 
> > I see. Unfortunately, for this case I don't have a solution.
> > However, if we declare the problem "insoluble", then Matt will solve it. :)
> > 
> > Regards,
> >    Juergen
> 
> 
> Hi
> 
> This is interesting.
> 
> Are you using the sqlite3 wrappers?

No, I don't do so. I probably expressed myself somewhat unclear.

> Are you trying to get a large signed integer from a database query, or as
> a return value from one of the other functions?

As far as I can see, the peek8u() and peek8s() functions that I posted are
only useful when a parameter of a sqlite function is a _pointer_ to a
64-bit integer. Is this sometimes the case?

> The reason I ask is that database queries are returned as text values in
> sqlite3,
> so you have to do the conversion afterwards.
> 
> However, if you are using functions not yet wrapped in eusqlite3, and you do
> manage to wrap them, I would be more than happy to add them to eusqlite3
> library.

Unfortunately, I almost don't know anything about sqlite.

Regards,
   Juergen