6 ms·

So what they are? Why it doesn't work? Your quote don't clarify.

• cperciva 14y ago
  Your "char" in a preprocessor directive is either a uintmax_t or an intmax_t. Either way, it's going to end up as #if 128 > 127 or #if 256 > 255 -- so the first case will always end up being included.
  • krollew 14y ago
    It's standard behaviour or one compiler does so? Outside preprocessor char has another meaning? Thanks anyway.
    • cperciva 14y ago
      Outside of the preprocessor, the char type is a one-byte integer (whether it's signed or not is implementation-defined).
      • krollew 14y ago
        So the good solution is make a test that finds it out, for example in configuration script and set proper preprocessor constant and test that constant instead.