er">Engine</span> <span class="special">&amp;</span> eng<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a random variate distributed according to the exponential distribution. </p>
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<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Engine<span class="special">&gt;</span> 
  <span class="identifier">result_type</span> <a name="id-1_3_