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+<pre id='vimCodeElement'>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
+RANDOM<span class="Delimiter">,</span>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
+Recipe_number[<span class="Constant">&quot;random&quot;</span>] = RANDOM<span class="Delimiter">;</span>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
+case RANDOM: <span class="Delimiter">{</span>
+  <span class="Comment">// todo: limited range of numbers, might be imperfectly random</span>
+  <span class="Comment">// todo: thread state in extra ingredients and results</span>
+  products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
+  products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>rand<span class="Delimiter">());</span>
+  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
+<span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
+MAKE_RANDOM_NONDETERMINISTIC<span class="Delimiter">,</span>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
+Recipe_number[<span class="Constant">&quot;make-random-nondeterministic&quot;</span>] = MAKE_RANDOM_NONDETERMINISTIC<span class="Delimiter">;</span>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
+case MAKE_RANDOM_NONDETERMINISTIC: <span class="Delimiter">{</span>
+  srand<span class="Delimiter">(</span>time<span class="Delimiter">(</span><span class="Constant">NULL</span><span class="Delimiter">));</span>
+  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
+<span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
+ROUND<span class="Delimiter">,</span>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
+Recipe_number[<span class="Constant">&quot;round&quot;</span>] = ROUND<span class="Delimiter">;</span>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
+case ROUND: <span class="Delimiter">{</span>
+  assert<span class="Delimiter">(</span>scalar<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)));</span>
+  products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
+  products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>push_back<span class="Delimiter">(</span>rint<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)));</span>
+  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
+<span class="Delimiter">:(scenario round_to_nearest_integer)</span>
+recipe main [
+  <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>round <span class="Constant">12.2</span>
+]
+<span class="traceContains">+mem: storing 12 in location 1</span>
+
+<span class="Delimiter">:(before &quot;End Includes&quot;)</span>
+<span class="PreProc">#include</span><span class="Constant">&lt;math.h&gt;</span>
+</pre>
+</body>
+</html>
+<!-- vim: set foldmethod=manual : -->