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From: ok@goanna.cs.rmit.oz.au (Richard A. O'Keefe)
Newsgroups: comp.arch
Subject: Re: Implementing Interval Arithmetic with IEEE rounding modes
Message-ID: <6399@goanna.cs.rmit.oz.au>
Date: 20 Jun 91 07:32:32 GMT
Article-I.D.: goanna.6399
References: <9106190449.AA02871@ucbvax.Berkeley.EDU> <1991Jun19.165150.2121@shinobu.sgi.com>
Organization: Comp Sci, RMIT, Melbourne, Australia
Lines: 13

In article <1991Jun19.165150.2121@shinobu.sgi.com>, rodman@sgi.com (Paul K. Rodman) writes:
> I've heard yapping about interval arithmetic for a decade and have yet
             ^^^^^^^ polite, isn't he?
> to see anyone that actually _used_ it. Has anyone implemented a
> compiler with set of "interval" data types?

Wisconsin.  A preprocessor for Fortran provided both interval and triplex.
IBM (germany?) Pascal/SC.
Quite a few others I can't remember the names of.
The hard part is not the compiler, but implementing the primitive operations.

-- 
I agree with Jim Giles about many of the deficiencies of present UNIX.