RE: Indicator passing from ILE RPG to CL

["Smith, Nelson" <NSmith@xxxxxxxxxxx>]

I'm not on V5 yet, but I do have many procedures that return an indicator
value.  They are rarely (probably never, so far) called by a CL program, so
I haven't noticed a problem with them yet, but always assumed they would
work equally well with a CL as with an RPG call.  Does this mean that as
soon I get to V5, that I should add *CL to my prototypes for procedures that
do return an indicator, just in case a CL needs to call them?

I've never really quite understood how CL's relate to prototypes anyway,
since you don't define them in the CL itself.



> -----Original Message-----
> From: Barbara Morris [SMTP:bmorris@ca.ibm.com]
> Sent: Thursday, September 19, 2002 7:57 PM
> To:   rpg400-l@midrange.com
> Subject:      Re: Indicator passing from ILE RPG to CL
>
> "Smith, Nelson" wrote:
> >
> > What exactly does the *CL in ExtProc mean?  At first glance, I would
> think
> > it meant that MYPROC was written in CL, but clearly that is not the
> case.
> > If it changes the behavior of the parms, does it effect the return value
> an
> > RPG program would see, calling the same proc?
>
> You can use *CL, *CWIDEN, *CNOWIDEN, *JAVA both for other-language
> procedures called by RPG and RPG procedures called by CL, C or Java.
> They control the way certain types are returned and passed by value, in
> either direction.
>
> The *CL means "use the CL conventions for returning values".  You could
> use *CL for RPG to RPG procedures, if you wanted, as long as both caller
> and callee were compiled with the same prototype.
>
>
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