Pádraig Brady wrote: > -------- Original Message -------- > Date: Tue, 07 Oct 2008 11:55:51 +0100 > From: Pádraig Brady <[EMAIL PROTECTED]> > To: Chet Ramey <[EMAIL PROTECTED]> > CC: [EMAIL PROTECTED] > > I was just discussing bit shifting with Tim Hockin using shell > arithmetic expansion, and he pointed out that bash and ksh > use arithmetic rather than logical shift for the >> operator.
Actually, bash and ksh use whatever the native C compiler implements, since both just translate the >> and << into the same operators internally. I don't see a really compelling reason to change, since, as you say, the standard requires signed long ints. > I know the opengroup spec says to use signed ints, > but I think that is intended to disambiguate input and output, > rather than defining internal operations. You might send a message to the austin group asking for an opinion. That would give you a better sense of the standard's intent. Chet -- ``The lyf so short, the craft so long to lerne.'' - Chaucer Chet Ramey, ITS, CWRU [EMAIL PROTECTED] http://cnswww.cns.cwru.edu/~chet/
