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<pre> <span class="ruby-comment cmt"># File lib/ruby-vpi/integer.rb, line 76</span>
76: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">unpack</span> <span class="ruby-identifier">aPackedWidth</span>
77: <span class="ruby-identifier">bits</span> = <span class="ruby-identifier">length</span>
78:
79: <span class="ruby-keyword kw">unless</span> <span class="ruby-identifier">aPackedWidth</span> <span class="ruby-operator">>=</span> <span class="ruby-identifier">bits</span>
80: <span class="ruby-identifier">raise</span> <span class="ruby-constant">ArgumentError</span>, <span class="ruby-node">"packed width #{aPackedWidth} must be at least #{bits} for integer #{self}"</span>
81: <span class="ruby-keyword kw">end</span>
82:
83: <span class="ruby-identifier">mask</span> = <span class="ruby-identifier">aPackedWidth</span>.<span class="ruby-identifier">to_mask</span>
84: <span class="ruby-identifier">result</span> = <span class="ruby-keyword kw">self</span> <span class="ruby-operator">&</span> <span class="ruby-identifier">mask</span>
85:
86: <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">result</span>[<span class="ruby-identifier">aPackedWidth</span> <span class="ruby-operator">-</span> <span class="ruby-value">1</span>] <span class="ruby-operator">==</span> <span class="ruby-value">1</span>
87: <span class="ruby-operator">-</span>((<span class="ruby-operator">-</span><span class="ruby-identifier">result</span>) <span class="ruby-operator">&</span> <span class="ruby-identifier">mask</span>)
88: <span class="ruby-keyword kw">else</span>
89: <span class="ruby-identifier">result</span>
90: <span class="ruby-keyword kw">end</span>
91: <span class="ruby-keyword kw">end</span></pre>
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