Re: from 32 to 64 Paul Fri Jul 31 13:30:49 2009
Some of the type sizes are different between 32-bit and 64-bit architectures, even between different 32-bit architectures. Other types are fixed, no matter what architecture you use.On Fri, 31 Jul 2009 20:12:05 +0100 (BST) Patrick Dupre <[EMAIL PROTECTED]> wrote:Hello, I do observe abnormal results with my applications Moving from a 32 to 64 bits architecture, using, c, C++, perl, is they something that I should be aware of ? like size of the float, integer ?Yes, in C and C++, shouldn't matter in perl. If you search on 64 bit compatibility you will find articles. There was a post on this list a long time ago about it also. Basically, there are special names that adjust depending on arch size.
A char, for instance, is always 8 bits or one byte. A Unicode char, if implemented, is 16 bits or two bytes.
An int is a "natural" integer, a.k.a. "word", for the CPU architecture, so 8, 16, 32 or 64 bits depending on the CPU.
More detail can be found here: http://en.wikipedia.org/wiki/C_variable_types_and_declarations, among other places.
Cheers, -- Paul -- fedora-list mailing list [EMAIL PROTECTED] To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines