Article View: comp.lang.misc
Article #229Re: Types, arrays, generality, and notation (was: Fortran90 and Arrays)
From: Raul Deluth Miller-Rockwell
Date: Thu, 16 Apr 1992 03:04
Date: Thu, 16 Apr 1992 03:04
39 lines
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1897 bytes
Jim Giles: Well, you quoted my name on someone else's remarks. In fact, I was disagreeing with the quote attributed to me above. Yes. My apologies. As for maximum elements of a type, what has that got to do with the issues raised here? The maximum element of a type is the identity element for the MIN operation. The correct return of `min' applied to an empty is _not_ the maximum possible value of the type! Who said anything about applying MIN to an empty? The discussion was about applying MIN REDUCTION to an empty. That implies that the array wasn't empty but it's minimum element had that value. Every implementation of reduction that I've seen returns the identity element for the specified operation when applied to an empty array. NAN (not a number) might be an appropriate return. Are you saying that MIN(NAN, 5) is 5? The user should have control over this explicitly though. The user should decide what should be done if the array argument to a reduce is empty. If that's the case, the user can do so... [obligatory description of turing completeness elided]. -- Raul Deluth Miller-Rockwell <rockwell@socrates.umd.edu>
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Newsgroups: comp.lang.misc Path: arc1-ca.pugleaf.net!sparky!uunet!haven.umd.edu!socrates!socrates!rockwell From: rockwell@socrates.umd.edu (Raul Deluth Miller-Rockwell) Subject: Re: Types, arrays, generality, and notation (was: Fortran90 and Arrays) In-Reply-To: jlg@cochiti.lanl.gov's message of Wed, 15 Apr 1992 20:28:13 GMT Message-ID: <ROCKWELL.92Apr15220419@socrates.umd.edu> Sender: rockwell@socrates.umd.edu (Raul Deluth Miller-Rockwell) Organization: Traveller References: <ROCKWELL.92Mar21001252@socrates.umd.edu> <ROCKWELL.92Apr15002308@socrates.umd.edu> <1992Apr15.202813.12326@newshost.lanl.gov> Date: Thu, 16 Apr 1992 03:04:19 GMT Lines: 39