On Sun, Jun 05, 2011 at 02:31:27PM -0400, Sean C. Farley wrote: > On Sun, 5 Jun 2011, Ben Laurie wrote: > > So, for example int64_t has no printf modifier I am aware of. Likewise > > its many friends.
> > In the past I've handled this by having a define somewhere along the > > lines of... > > #if <something> > > # define INT_64_T_FMT "%ld" > > #else > > # define INT_64_T_FMT "%lld" > > #endif > > but I have no idea where to put such a thing in FreeBSD. Opinions? > > Also, I guess I'd really need to do a modifier rather than a format, > > for full generality. > You need to include inttypes.h, which includes machine/_inttypes.h. > This will provide the appropriate macro which in this case is PRId64. The macros from <inttypes.h> are certainly valid, but the style in most of FreeBSD prefers casting to a type such as intmax_t or uintmax_t for which a constant format string is available (%jd/%ju). In the particular case of int64_t, it would seem that long long is better than intmax_t, as it is possibly shorter but still guaranteed large enough by C99, but there are objections against this that I do not understand. Also, note the format strings for size_t, %zu, and for ptrdiff_t, %td. -- Jilles Tjoelker _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
