ving a load capacitance CL.</span>
<span class="comment">% The problem is to find optimal scale factors for the inverter</span>
<span class="comment">% that minimize the sum of them (area), while obeying constraints</span>
<span class="comment">% on the maximum delay through the circuit, and minimum and maximum</span>
<span class="comment">% limits on scale factors. There are no limits on the total power.</span>
<span class="comment">% (For more details about the inverter chain see sec. 2.1.11 in the paper.