Article View: comp.lang.modula2
Article #4779Re: WriteInt(-32768, n)
From: Robert Firth
Date: Fri, 21 Apr 1989 13:09
Date: Fri, 21 Apr 1989 13:09
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1120 bytes
In article <503@trwrc.UUCP> agnew@trwrc.UUCP (Robert A. Agnew) writes: > I cannot think of any computation that produces 0x8000 without >causing an overflow (carry into sign bit # carry out of sign bit) short >of getting it from a 16 bit A/D converter where it's usually considered >BOGUS. Well, how about this computation: -32767 - 1 => -32768 (#8001 - #0001 => #8000) such as would occur, for instance, in i := 0; WHILE i # -32768 DO i := i-1 END; A language or lanugage implementation that arbitrarily excludes one of the legal values of the underlying machine domain is being pretty stupid, especially a systems programming language.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!rochester!pt.cs.cmu.edu!sei!firth From: firth@sei.cmu.edu (Robert Firth) Newsgroups: comp.lang.modula2 Subject: Re: WriteInt(-32768, n) Message-ID: <3212@bd.sei.cmu.edu> Date: 21 Apr 89 13:09:06 GMT References: <1007@psueea.UUCP> <1029@gmdzi.UUCP> <503@trwrc.UUCP> Reply-To: firth@sei.cmu.edu (Robert Firth) Organization: Software Engineering Institute, Pittsburgh, PA Lines: 21