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From: | Endlisnis <s257m AT unb DOT ca> |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | Re: Infinite loop??? |
Date: | Sat, 11 Jul 1998 13:37:00 -0300 |
Organization: | University of New Brunswick |
Lines: | 16 |
Message-ID: | <Pine.SOL.3.96.980711133217.25617C-100000@sol.sun.csd.unb.ca> |
References: | <35A3D8C3 DOT 208E6D23 AT cyberdude DOT com> <35A5FC72 DOT C235F6D9 AT eik DOT bme DOT hu><VqrTZAA4qlp1Ew16 AT foobar DOT co DOT uk> <TLOCBFAvt0p1EwGO AT foobar DOT co DOT uk> |
NNTP-Posting-Host: | sol-alt1.unb.ca |
Mime-Version: | 1.0 |
In-Reply-To: | <TLOCBFAvt0p1EwGO@foobar.co.uk> |
To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
On Sat, 11 Jul 1998, Paul Shirley wrote: ->>>I think these differ in how they uses the CARRY bit -> ->(Having realised << is a left shift;) ->The reason you see SAL or SHL is that they are the same instruction, ->given 2 names at the whim of some Intel engineer, used at the whim of ->the compiler writers. ->The carry (if that were the difference) would be irrelevant since C ->source cannot see a carry, compiler writers can do what they like with ->it. Wouldn't that mean that if you had a negative number shifted left a bunch of times you could end up with a positive? Endlisnis [I have a pyramid of wingyness]
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