Date: Wed, 16 Oct 2002 13:38:58 -0400 (EDT) From: Gary Thorpe <gathorpe79@yahoo.com> To: Terry Lambert <tlambert2@mindspring.com> Cc: freebsd-arch@freebsd.org Subject: Re: short uid/gid Message-ID: <20021016173858.98439.qmail@web11205.mail.yahoo.com> In-Reply-To: <3DACEC96.D307070A@mindspring.com>
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I am not aware of the latest ISO C standards, but I believe things like 'int' and 'long' are not defined in their lengths, but the minimum values they can represent: 'int' has to be able to do -65536 to +65536 approximately and long has to be able to do -2 billion to +2 billon approximately. On gcc x86, a 'long' may in fact be the same lentgh as an 'int'. The only types in C that *may* have their lengths defined are 'char' (8-bit value) and 'wchar' (16-bit value) as far as I know. I believe Java has the strict length interpritations. Has this changed with the latest C standards (and was it ever true in the first place)? --- Terry Lambert <tlambert2@mindspring.com> wrote: > "Danny J. Zerkel" wrote: > > At least for our Linux emulation layer, supporting IPC_64 would be > one > > of the pieces (probably the main one) keeping The Sims from > running. > > The other thing we are missing is the Linux ioctl() interface for > reading > > MSDOSFS directories, but that may be optional. > > > > I will eventually take a look at this (IPC_64) if the scheduling > fairy brings > > me the time. > > Basically, they convert a lot of short fields to what the manual > page calls "longs", but which are actually 32 bit values; makes > you wonder where they obtained the name "IPC_64", when it should > probably more properly be "IPC_32". > > They pad it out to 36 bytes by adding two unsigned long fields > (32 bit longs); gotta wonder why they didn't stop at 32 bytes... > > -- Terry > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-arch" in the body of the message ______________________________________________________________________ Post your free ad now! http://personals.yahoo.ca To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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