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<div class="WordSection1">
<p class="MsoNormal">All,<o:p></o:p></p>
<p class="MsoNormal">I am sure this question has been answered before, but I can’t find it.<o:p></o:p></p>
<p class="MsoNormal">Suppose I want to call some function, either built-in or user-defined, n number of times, and measure the total time it takes. Is there a more efficient or elegant way
<o:p></o:p></p>
<p class="MsoNormal">of doing this than passing the expression to a tail-recursive counting loop such as the following?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">(define (repeater sexpr count)<o:p></o:p></p>
<p class="MsoNormal"> (sexpr)<o:p></o:p></p>
<p class="MsoNormal"> (cond <o:p></o:p></p>
<p class="MsoNormal"> [(> count 0) (repeater sexpr (- count 1)) ])<o:p></o:p></p>
<p class="MsoNormal">) <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Georgia","serif"">George Rudolph<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Georgia","serif"">Associate Professor of Computer Science<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Georgia","serif"">Department of Mathematics and Computer Science<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Georgia","serif"">225 Thompson Hall<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Georgia","serif"">The Citadel<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Georgia","serif"">171 Moultrie Street<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Georgia","serif"">Charleston, SC 29409<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Georgia","serif"">843.953.5032<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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