Last to Act preflop

[rem54]

As the button how can I tell if I am really the last to act on the round?

Situation example, fold, fold, call, call, raise, raise, call, fold, now it's my turn.

I have two callers and the initial raiser still to act.

How do I know they are there are three players still to act?

Thoughts (Raises > 1 OR Calls > CallsSinceLastRaise).

[Alex]

As the button how can I tell if I am really the last to act on the round?

Situation example, fold, fold, call, call, raise, raise, call, fold, now it's my turn.

I have two callers and the initial raiser still to act.

How do I know they are there are three players still to act?

Thoughts (Raises > 1 OR Calls > CallsSinceLastRaise).

yes, i think (Raises-1 + Calls - CallsSinceLastRaise)