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AGlauser@xxxxxxxxxxxx wrote:
This *seems* to work fine - my concern is the fact that my CL varibles are
*CHAR while my RPG parameters are expecting dates. How safe is it to do
what I'm doing here?
In this case, it's quite safe because dates, times, and timestamps are
pretty much string values at the parameter-passing level.
It wouldn't be safe to pass a character variable by value if the actual
parameter was float or integer.
There are two types of parameters at the low level (a level way below
RPG): scalar and aggregate. Integer, float, and pointer are scalar;
string types and DTZ types are aggregate*; I'm not sure about packed and
zoned. I don't know the exact mechanisms, but scalar parameters are
passed by value differently from aggregate parameters, so you can't mix
and match.
If you want to be really safe, you would create a wrapper procedure for
CL to call, with character parameters, that you pass on to the real
procedure using %DATE(parm). Or the wrapper could pass the parameters
by reference, and pass them on directly to the real procedure.
* With EXTPROC(*CWIDEN|*CNOWIDEN) single-char alpha and single-char
unicode are handled as scalar.
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