3 ms·

So what does likely() do?

• unlink 17y ago
  Presumably it is defined to __builtin_expect(x, 1)[0], a hint to gcc that one branch (in this case the first) of the if is more likely. [0] http://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html http://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html
• termie 17y ago
  macro for gcc __builtin_expect? http://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html http://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html