From: karl@grebyn.com (Karl A. Nyberg)
Subject: First as Successor to Last (was On quitting an Iterator Prematurely)
Date: 2 May 90 20:24:34 GMT [thread overview]
Message-ID: <19985@grebyn.com> (raw)
In-Reply-To: 1823@sparko.gwu.edu
In article <1823@sparko.gwu.edu> mfeldman@seas.gwu.edu () writes:
>This is a nice idea. Does anyone know if there was an Ada9x suggestion to
>provide this?
Asode from all the requests dealing with unsigned integers, RR-0389 starts
off as:
DATE: 25 September 1989
NAME: Stephen J. Wersan, Ph.D.
ADDRESS:
Code 3561
NAVWPNCEN
China Lake, CA 93555
WERSAN%356VAX.DECNET2NWC.NAVY.MIL
TELEPHONE: 619/939-3120, Autovon 437-3120
ANSI/MIL-STD-1815A REFERENCE: 3.5
PROBLEM: Inconvenient handling of scalar types that are cyclic in nature.
IMPORTANCE:
5
Cyclic types arise in many areas. Two important examples are types
used to deal with time and compass direction (azimuth). Some of the
messy trivia arising in the embedded world concerns handling such
types represented by roll-over counters, and the like. This is
probably closely related to unsigned integer types, and anything
done in this area should mesh with what Ada 9X does there.
CURRENT WORKAROUNDS:
The use of the pred and succ attributes must be avoided.
Special functions must be written to replace them.
prev parent reply other threads:[~1990-05-02 20:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <9004262133.AA06607@hac2arpa.hac.com>
[not found] ` <7050@fy.sei.cmu.edu>
1990-05-01 16:09 ` On quitting an Iterator Prematurely Mike Feldman
1990-05-02 20:24 ` Karl A. Nyberg [this message]
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