documentation/code_VALSignal.signal_prefix.html

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  20 <code class="code"><span class="keyword">let</span>&nbsp;signal_prefix&nbsp;=&nbsp;<span class="keyword">fun</span>&nbsp;s0&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="keyword">fun</span>&nbsp;s1&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<br>
  21 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">let</span>&nbsp;new_signal&nbsp;=&nbsp;<span class="keyword">fun</span>&nbsp;t&nbsp;<span class="keywordsign">-&gt;</span><br>
  22 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">if</span>&nbsp;t&nbsp;=&nbsp;0&nbsp;<span class="keyword">then</span>&nbsp;(signal_fun&nbsp;s0)&nbsp;0<br>
  23 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">else</span>&nbsp;<span class="keyword">if</span>&nbsp;t&nbsp;&gt;&nbsp;0&nbsp;<span class="keyword">then</span>&nbsp;(signal_fun&nbsp;s1)&nbsp;t<br>
  24 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">else</span>&nbsp;raise&nbsp;(<span class="constructor">Signal_operation</span>&nbsp;<span class="string">"prefix&nbsp;time&nbsp;cannot&nbsp;be&nbsp;&lt;&nbsp;0."</span>)<br>
  25 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="keyword">in</span><br>
  26 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(frequency&nbsp;s1,&nbsp;new_signal)</code></body></html>