From: Richard Dawe Newsgroups: comp.os.msdos.djgpp Subject: Re: Error trying to Shift Longs & LongLong Date: Wed, 23 Apr 2003 18:40:35 +0100 Lines: 28 Message-ID: <3EA6D013.8176C95F@phekda.freeserve.co.uk> References: NNTP-Posting-Host: 62.136.9.90 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Trace: newsg3.svr.pol.co.uk 1051120786 8529 62.136.9.90 (23 Apr 2003 17:59:46 GMT) NNTP-Posting-Date: 23 Apr 2003 17:59:46 GMT X-Complaints-To: abuse AT theplanet DOT net X-Mailer: Mozilla 4.77 [en] (X11; U; Linux 2.2.23 i586) X-Accept-Language: de,fr To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com Hello. Radical, NetSurfer wrote: > > The program below works 100% correctly in Borland, > but produces one very obvious problem when run from > DJGPP..... > > x = (1 << m); > > why should shifting by a (-1) create such an unsual value? > > Shouldn't shifting by "all" bits give Zero ? > > Why is the "sign-bit" apparently being shifted into things? > > Long Long appears to be a special contrivance, so we're not > too concerned about their artificial behavior. > > Comments welcomed! [snip] So what results do you actually get? Describe it, e.g.: 1 << 1 gives 2. Regards, -- Richard Dawe [ http://www.phekda.freeserve.co.uk/richdawe/ ]