Re: Set numeric value to INDEX was Re: cobol array editing output

From: Judson McClendon (judmc_at_sunvaley0.com)
Date: 12/17/03 

Date: Wed, 17 Dec 2003 06:10:54 -0600

"Clark F. Morris, Jr." <cfmtech@istar.ca> wrote:
> >
> > Since range checks have to be performed on the SET that would occur
> > in the called subprogram anyway, and presuming that the implementor
> > has provided a USAGE that corresponds in format to that which would
> > be used for an index, it seems to me unlikely that the SET of an
> > index-name to an index data item would differ *significantly* in
> > performance from the SET of an index-name to a numeric data item. I
> > see maybe a couple of math ops difference. Yes, there is a
> > difference, but I'm not convinced that difference is likely to be
> > significant compared to everything else the called program would be
> > expected to do.

I agree. On architectures I am familiar with, the overhead of calling a
procedure or function is considerably greater than a couple of math ops,
not including any other processing the procedure or function does. 

-- 
Judson McClendon      judmc@sunvaley0.com (remove zero)
Sun Valley Systems     http://sunvaley.com
"For God so loved the world that He gave His only begotten Son, that
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