3 ms·

it’s probably a switch on the index (or in this case you could actually have an array and use the index). I don’t know my compilers that well but if I had to g

it’s probably a switch on the index (or in this case you could actually have an array and use the index). I don’t know my compilers that well but if I had to guess I would say there is a good chance this will be optimized away by the compiler.

azalemeth 5y ago
As pointed out above, gcc ≥11 optimises it to a switch / lookup table (https://godbolt.org/z/PxvGKqGrd https://godbolt.org/z/PxvGKqGrd).
- rantwasp 5y ago
  oh wow. this is really nice. was expecting some sort if gcc documentation or a blog post. got the real deal. thanks for the link