Article View: comp.lang.misc
Article #1272Re: C vs. FORTRAN (was C official DOD langauge?)
From: Bruce A. Martin
Date: Thu, 07 Jun 1990 15:22
Date: Thu, 07 Jun 1990 15:22
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1982 bytes
In article <3169@goanna.cs.rmit.oz.au> ok@goanna.cs.rmit.oz.au (Richard A. O'Keefe) writes:
>In article <1633@dinl.mmc.UUCP>, noren@dinl.uucp (Charles Noren) writes:
>
... [Much interesting dialog.]
... [My quibble is only with the following: ]
>: (Question: It's been so long since I've used
>: FORTRAN, but how does the EQUIVELANCE statement
>: affect or not affect aliasing?)
>
>If you're using one of the variables in an EQUIVALENCE group,
>what you get when you use one of the others isn't defined.
Welll.... Not quite!
What I think you meant to say is:
If you're using one of the variables in an EQUIVALENCE group,
what you get when you use one of the others that has a
DIFFERENT TYPE is undefined.
Of course, all variables (aliases, actually) in the EQUIVALENCE group
which have the SAME TYPE do become defined and have the same value after
one of them has been defined (provided none of the others of differing
type has become defined more recently).
{Gee! It's is a lot harder to say than to understand.
Anyhow, this use of EQUIVALENCE is really no different from "union".}
-/s/- BAM
Bruce A. Martin
Grumman Aircraft Systems [Address given for identification only.]
(Mailstop C02-106) [Every conceivable disclaimer applies!!]
Bethpage, NY 11714-3582 [Opinions are mine only, & will change,]
(516) 577-1085 [without notice, whenever appropriate!!]
P.S. Sorry. I do not know what the "EQUIVELENCE" statement does! $8-D
(Refer to "alt.flame.spelling" for further information.)
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!samsung!umich!sharkey!bnlux0!bam From: bam@bnlux0.bnl.gov (Bruce A. Martin) Newsgroups: comp.lang.misc Subject: Re: C vs. FORTRAN (was C official DOD langauge?) Message-ID: <1915@bnlux0.bnl.gov> Date: 7 Jun 90 15:22:56 GMT References: <1633@dinl.mmc.UUCP> <3169@goanna.cs.rmit.oz.au> Organization: Grumman Aircraft Systems (& X3J3) Lines: 42