formance pretty easily.</b> On
the standard <a href="fib.scm">stupid Fibonacci microbenchmark</a>, on
my laptop, Ur-Scheme outperforms MzScheme's interpreter by about a
factor of 7.6 (excluding time to compile and assemble):

<blockquote><pre>
(<span class="keyword">define</span> (<span class="function-name">fib2</span> n) 
  (<span class="keyword">cond</span> ((= n 0) 1)
        ((= n 1) 1)
        (<span class="keyword">else</span> (+ (fib2 (1- n)) 
                 (fib2 (- n 2))))))
</pre></blockquote>
