RosettaCodeData/Task/Fibonacci-sequence/Lisaac/fibonacci-sequence.lisaac

- fib(n : UINTEGER_32) : UINTEGER_64 <- (
  + result : UINTEGER_64;
  (n < 2).if {
    result := n;
  } else {
    result := fib(n - 1) + fib(n - 2);
  };
  result
);