I am recently learning scheme and trying to define a recursive function of log. so the output will look like (log 5 100) => 2, (log 3 4782968) => 13.

(define (log m n) (if (> m n) 0 (+ 1 (log (* m m) n )))) 

The function I wrote is not correct because of the m is keep changing. Is that any way that I can keep using the first m to do the recursive?