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<pre id='vimCodeElement'>
<span class="Delimiter">:(before "End Primitive Recipe Declarations")</span>
RANDOM<span class="Delimiter">,</span>
<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
Recipe_ordinal[<span class="Constant">"random"</span>] = RANDOM<span class="Delimiter">;</span>
<span class="Delimiter">:(before "End Primitive Recipe Implementations")</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 products</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 "End Primitive Recipe Declarations")</span>
MAKE_RANDOM_NONDETERMINISTIC<span class="Delimiter">,</span>
<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
Recipe_ordinal[<span class="Constant">"make-random-nondeterministic"</span>] = MAKE_RANDOM_NONDETERMINISTIC<span class="Delimiter">;</span>
<span class="Delimiter">:(before "End Primitive Recipe Implementations")</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 "End Primitive Recipe Declarations")</span>
ROUND<span class="Delimiter">,</span>
<span class="Delimiter">:(before "End Primitive Recipe Numbers")</span>
Recipe_ordinal[<span class="Constant">"round"</span>] = ROUND<span class="Delimiter">;</span>
<span class="Delimiter">:(before "End Primitive Recipe Implementations")</span>
case ROUND: <span class="Delimiter">{</span>
if <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << current_recipe_name<span class="Delimiter">()</span> << <span class="Constant">": 'round' requires exactly one ingredient, but got "</span> << current_instruction<span class="Delimiter">().</span>to_string<span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
if <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> <span class="Delimiter">{</span>
raise << current_recipe_name<span class="Delimiter">()</span> << <span class="Constant">": first ingredient of 'round' should be a number, but got "</span> << current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Identifier">break</span><span class="Delimiter">;</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"> <- </span>round <span class="Constant">12.2</span>
]
<span class="traceContains">+mem: storing 12 in location 1</span>
<span class="Delimiter">:(before "End Includes")</span>
<span class="PreProc">#include</span><span class="Constant"><math.h></span>
</pre>
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