Path: utzoo!mnetor!uunet!husc6!bloom-beacon!gatech!mcnc!uvaarpa!umd5!rutgers!mtune!whuts!homxb!hou2d!afb3
From: afb3@hou2d.UUCP (A.BALDWIN)
Newsgroups: comp.lang.fortran
Subject: Re: Modifying iteration variables in DO loops
Message-ID: <1865@hou2d.UUCP>
Date: 3 Feb 88 15:57:32 GMT
References: <1309@nmtsun.nmt.edu>
Organization: AT&T Bell Laboratories, Holmdel
Lines: 22
Keywords: X3 standard FORTRAN 77
Summary: One does (at least)


The "iteration counter modification" discuss seems to be saying
that most (all) fortran compilers can't do this.  WRONGO....

The DEC VAX/VMS fortran compiler does allow do variable modification
but gives you warnings at both compile and link time......  (I've
tried it, it works, but who would want it!!).

Also, there seems to be a little known fact that "f77" on System V
UNIX was overhauled for System V Release 2 (paging) on both 3B20s
and VAXen.  Its not the same base compiler as the Version 7 one
(on which the BSD compiler is based).  No comments about the other
3B computers and FORTRAN.

Have fun....

Al Baldwin
AT&T-Bell Labs
...!ihnp4!hou2d!afb3


[These opinions are my own....Who else would want them!!!]