On Fri, 31 Oct 2003, Terry Lambert wrote: > Bruce Evans wrote: > > ... int8_t is > > optional in C99 and all code that uses it unconditionally is unportable. > > Similarly for most other types in <stdint.h>. The required ones are > > [u]int_least{8,16,32,64}_t and [u]int_fast{8,16,32,64}_t and [u]intmax_t, > > i.e., nothing that can't be declared in C90 except a 64-bit type. > > I believe that you meant to say uint8_t is optional, and int8_t is > required (see /usr/src/sys/*/include/_types.h). I think this was a > concession to IBM, which defaulted to unsigned characters, and > lacked a "signed" keyword in its compilers. No, I meant what I wrote. All fixed-width types are optional, at least in the C99 draft (n869.txt). There is nothing special about uint8_t vs int8_t except that it might not exist for a different reason. BruceReceived on Fri Oct 31 2003 - 02:30:30 UTC
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