On 04/07/2014 02:47 AM, Corinna Vinschen wrote: > > There's no standard which restricts the sizes of the datatypes in > that way. There's only this rule to follow: > > sizeof (char) <= sizeof (short) <= sizeof (int) <= sizeof (long)
Well, there IS the C rule that sizeof(char)==1, and also that char holds >= 8 bits, short holds >= 8 bits, int holds >= 16 bits, long holds >= 32 bits. There is also a POSIX rule that CHAR_BITS==8 (so while C allows a 9-bit or 32-bit char [and yes, such machines exist, although rare], POSIX does not allow that). But in general, on most modern porting platforms, 'long' is a redundant type - it will either be equal in size to 'int' (typical for a 32-bit machine) or to a 'long long' (typical for a 64-bit machine); it only mattered on 16-bit machines which are now museum pieces. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
signature.asc
Description: OpenPGP digital signature
