3 ms·

I'm just happy that both C and C++ now have bit stuff like byteswap, popcount, rolr, etc. It was a bit silly that stuff like that wasn't in either standard unt

• quelsolaar 4y ago
  These this are much more complicated to define then you think when you consider the kinds of strange hardware C supports, where bytes are not 8 bits and things like that. We tried to get endian-ness conversion functions in to c23 but ran out of time just because defining these functions so that their functionality is clear on non standard hardware is so difficult.
  • fanf2 4y ago
    It would have been reasonable to define the functions only for the CHAR_BIT == 8 case, and if any implementers that support weird architectures want the functionality let them come forward with a proposal. I got the impression that the people working on the proposal got into an avoidable mess of complications.
    • quelsolaar 4y ago
      Given that weird platforms are so dependent on C and since we release versions so infrequent, we try to get it right the first time. Often even defining what is excluded becomes complicated.
    • cbrogrammer 4y ago
      if C throws away portability it is no longer C
      • pjmlp 4y ago
        C's secret to portability is called #ifdef spaghetti and mostrosities like autoconf.
  • Bigpet 4y ago
    oh, I didn't see that byteswap wasn't in there. I googled the "stdc_" part and saw a paper that included byteswap. I guess that was an older draft. Damn, so close. Well I hope it's included next time.
    • __phantomderp 4y ago
      I'll do my best to get ror/rol and byteswap in!