Re: Parallel FORTRAN bite

In article <1990May31.161025.3138@esegue.segue.boston.ma.us> pardo@june.cs.washington.edu (David Keppel) writes:
> DOALL I = 1, N
> [appeared to the Connection Machine compiler to be]
> DO ALLI = 1, N


          Just to clarify a "fine" point, in ANSI FORTRAN '77, the construct


                                                          DOALLI=1,N


(spaces are null in FORTRAN) is defined to mean


                                                      DO ALLI = 1, N


(spaces are still null, but I hope my meaning is clear). Therefore, the
so-called DOALL extension has changed the semantics of standard FORTRAN,
rather than extending the language. The shuttle people might have a right
to be peeved, but they shouldn't direct their displeasure at the CM FORTRAN
implementors.


[I agree, adding ambiguous syntax that can change the meaning of an existing
legal program is not good language design. The entire issue of parallel
extensions to Fortran and to C is a hot topic -- I get lots of interesting
mailings from the Numerical C Extensions Group. -John]
[From sampson@cod.nosc.mil (Charles H. Sampson)]
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