3 ms·

> if (!chk_add(&x, a, b)) { > /* error! */ > } does it return non-zero on success???

• EdSchouten 4y ago
  It returns a boolean.
• tinglymintyfrsh 4y ago
  They're using a bool, so it violates the old-school C paradigm used for library calls. This is more of a macro rather than a syscall or standard library function call.
  • comex 4y ago
    It returns a bool, but true means error, not false.
    • ronsor 4y ago
      It's not really an error. The function is just "check if this addition overflows" and tells you true, it does overflow, or false, it doesn't.