Re: Is const really that much better than value?

[Barbara Morris <bmorris@xxxxxxxxxx>]

Larry Ducie wrote:
>  
> I mean, when parameters are passed to a subprocedure the OS passes an array
> of pointers together with operational descriptors doesn't it? 

No, you're thinking of program calls; the parameters to programs are 
passed as an array of pointers (but without the operational descriptor).

The parameters to bound procedures are passed individually.  When you 
pass a parameter by value, the OS really does copy the entire parameter 
value as part of low-level parameter passing.  (This is additional to 
any copying that the RPG compiler does to create temporaries due to type 
or size differences; that _is_ usually the same for CONST and VALUE.)