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Subject: Re: (SC22WG5.3029) Wishes for future revisions of Fortran 
In-Reply-To: Your message of "Fri, 10 Oct 2003 09:17:19 EDT."
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On Fri, 10 Oct 2003 09:17:19 EDT Dan Nagle <dnagle@erols.com> wrote
> 
> On Thu, 09 Oct 2003 13:55:32 -0700, Van.Snyder@jpl.nasa.gov wrote:
> 
> <snip>
> >
> >'include' doesn't know how to substitute actual arguments for dummy arguments,
> >so it's a non-starter.
> 
> That's exactly what coco's text-copy mechanism does.

Text copying isn't the same as argument substitution.  Suppose there is
an expression containing D * X where D is a dummy argument.  Suppose the
actual argument is A + B.  Text copying gives A + B * X, not (A + B) * X.
If text copying was reliable I could use any macro processor, such as
cpp or m4.

You might say "You Idiot! You should have written (D)*X in the original
code!"  Well, I didn't write the original code.  It's years old.  I'm
the one who discovered I can get a factor of eight (!) improvement in
run time by inlining it.

-- 
Van Snyder                    |  What fraction of Americans believe 
Van.Snyder@jpl.nasa.gov       |  Wrestling is real and NASA is fake?
Any alleged opinions are my own and have not been approved or disapproved
by JPL, CalTech, NASA, Sean O'Keefe, George Bush, the Pope, or anybody else.