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  1.  Home
  2. RPG400-L
  3. May 2002

Re: MCH0601 on CVTCH

Buck Calabro wrote:
>
> > $CtoH           PR          extproc('cvtch')
> >   P$TgtHex            64a   options(*varsize)
> >   P$SrcChar           128a   const options(*varsize)
> >   P$SrcBytes          10i 0 value
> >
> ...
>
> The prototype does not match the documentation.  Try pointers to the source
> and target strings rather than the above.  The RPG400-L archives have
> examples of working code (link at the bottom of every message.)  Search for
> 'cvtch'.  The FAQ (http://faq.midrange.com) has a description of how to
> translate the C prototypes into RPG.
>

Buck, when a function wants a pointer by value, you can also pass
"something" by reference (or CONST, aka read-only-reference), since
passing something by reference amounts to passing a pointer-to-something
by value.

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