On Sun, Sep 11, 2011 at 6:41 PM, Bastien ROUCARIES <roucaries.bast...@gmail.com> wrote: > n Sun, Sep 11, 2011 at 6:33 PM, Paul Eggert <egg...@cs.ucla.edu> wrote: >> On 09/11/11 08:14, Bastien ROUCARIES wrote: >>> gcc has it : http://gcc.gnu.org/onlinedocs/gcc/_005f_005fint128.html >>> (at least for 64bits) >> >> I'd be leery of any attempt to define a system type wider than >> intmax_t. > > For sure but we could override intmax_t, intmax_t is defined at libc > level not at compiler level. > >>Too many things will break. It might be OK to use >> __int128 for specialized internal purposes (cryptography comes >> to mind), but not for common external interfaces such as uid_t.
Cert document int use for 128bits so it is used https://www.securecoding.cert.org/confluence/display/cplusplus/INT15-CPP.+Use+intmax_t+or+uintmax_t+for+formatted+IO+on+programmer-defined+integer+types > For windows it is the only solution due to microsoft uuid scheme. > > Bastien > >> >
