If statements

[David Gray]

Something a little more prosaic after the last set of messages on mit-scheme-devel.

Just to get a feel for the speed and stability of a new system I run a long Fibonacci recursive functioning and I must have mixed up an old version which was much faster, (fib 42) -> 3s instead of 25s, and the only difference seems to be the following if statement.

(if (<= n 2)

1

(fib…….

(if (or (= n 1)

          (= n 2)

     1

(fib………

Is the underlying code so different?