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<title>log2 (Integer)</title>
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<pre> <span class="ruby-comment cmt"># File lib/ruby-vpi/integer.rb, line 24</span>
24: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">log2</span>
25: <span class="ruby-identifier">raise</span> <span class="ruby-value str">"integer must be positive"</span> <span class="ruby-keyword kw">if</span> <span class="ruby-keyword kw">self</span> <span class="ruby-operator"><</span> <span class="ruby-value">0</span>
26: <span class="ruby-identifier">bin</span> = <span class="ruby-identifier">to_s</span>(<span class="ruby-value">2</span>)
27:
28: <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">bin</span> <span class="ruby-operator">=~</span> <span class="ruby-regexp re">/^10+$/</span>
29: <span class="ruby-identifier">bin</span>.<span class="ruby-identifier">length</span> <span class="ruby-operator">-</span> <span class="ruby-value">1</span>
30: <span class="ruby-keyword kw">else</span>
31: <span class="ruby-identifier">bin</span>.<span class="ruby-identifier">length</span>
32: <span class="ruby-keyword kw">end</span>
33: <span class="ruby-keyword kw">end</span></pre>
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14 entries across 14 versions & 1 rubygems