What is a packed 32-bit?

[Doru Roman]

Hi,

Can somebody tell me what is a packed variable?
For example a packed 32-bit integer. Is it the same as unsigned?

Thanks

[William DePalo [MVP VC++]]

"Doru Roman" <do*******@rogers.com> wrote in message
news:On**************@TK2MSFTNGP05.phx.gbl...

Can somebody tell me what is a packed variable?
I'm guessing that by pacjed variable you are referring to the ability of the
C and C++ compilers tp pack "bit fields" into an integer. I could be wrong.

If I am not, you might want to google for "bit field" and take a look at
results like this one:

http://www.cs.cf.ac.uk/Dave/C/node13.html
For example a packed 32-bit integer. Is it the same as unsigned?

ints and unsigned ints are two different types.

Regards,
Will

[Doru Roman]

Thanks William
"William DePalo [MVP VC++]" <wi***********@mvps.org> wrote in message
news:ud*************@TK2MSFTNGP02.phx.gbl...

"Doru Roman" <do*******@rogers.com> wrote in message
news:On**************@TK2MSFTNGP05.phx.gbl...

Can somebody tell me what is a packed variable?

I'm guessing that by pacjed variable you are referring to the ability of
the C and C++ compilers tp pack "bit fields" into an integer. I could be
wrong.

If I am not, you might want to google for "bit field" and take a look at
results like this one:

http://www.cs.cf.ac.uk/Dave/C/node13.html

For example a packed 32-bit integer. Is it the same as unsigned?

ints and unsigned ints are two different types.

Regards,
Will

[Shawn B.]

> Can somebody tell me what is a packed variable?

For example a packed 32-bit integer. Is it the same as unsigned?

The book, "The New C Standard" by Derek M. Jones, which was never published,
but is freely available via Acrobat PDF, contains good information on the
subject in ample supply throughout the 1600+ page book that will surely
answer your question.
Thanks,
Shawn